RE: *ist D and Power sources
Shaun, if anyone *has* come up with such a solution - I WANT IT! Try using the *istD with the Hitachi microdrive, no battery grip, and see just how long the batteries last! I go through 7 sets per wedding, and usually end up chucking in a set of Duracell's just to "see me through" the tail end... If there was a Quantum pack, or equivalent, I'd be lining up for it... BTW, I posted this once before, but I'm not sure if anyone noticed. I "discovered" that the AC Adapter for the MUVO works perfectly with the *istD! I haven't found anywhere that I can buy the AC Adapter that is supposedly available to suit the camera, so one night, I got brave and risked blowing up my camera by plugging the MUVO adapter in. I used it solidly for 4 hours and it worked like a dream! I have used it many times since, with no bad side effects (well, none to my knowledge)... tan. -Original Message- From: Dr. Shaun Canning [mailto:[EMAIL PROTECTED] Sent: Sunday, 18 July 2004 2:43 PM To: Pentax-Discuss Subject: *ist D and Power sources Hi gang, Here's a question for all the knowledgable *ist D owners out there to ponder. I use 2300 mah Nimh rechargeable batteries in my *ist D and AF360 flash (12 all up - 8 in camera, 4 in flash). While I am reasonably happy with this setup, it is sometimes left wanting. Particulalry when shooting RAW or TIFF images, there is a noticable faster drain on the batteries life than with JPEG (which makes perfect sense with all the extra disk writing etc). The question is: Is anybody using any alternative power sources to power their *ist D? For example, has anyone come up with or come across a 'power pack' that will power the *ist D like a quantum digital power pack (which is not available for the *ist D). Looking forward to some creative answers. Cheers Shaun -- _ Dr. Shaun Canning P.O. Box 21, Dampier, WA, 6714, Australia. m: 0414 967644 http://www.heritageservices.com.au [EMAIL PROTECTED] _
RE: *ist D and Power sources
On 18 Jul 2004 at 15:03, Tanya Mayer Photography wrote: > BTW, I posted this once before, but I'm not sure if anyone noticed. I > "discovered" that the AC Adapter for the MUVO works perfectly with the > *istD! I haven't found anywhere that I can buy the AC Adapter that is > supposedly available to suit the camera, so one night, I got brave and > risked blowing up my camera by plugging the MUVO adapter in. I used it > solidly for 4 hours and it worked like a dream! I have used it many times > since, with no bad side effects (well, none to my knowledge)... LOL. Dare-devil. I just checked the Muvo PSU, it's rated to provide 5VDC @ 280mA, the camera specification are 6.5VDC therefore you probably won't cause damage but I'm surprised it worked. I assume you were using it along with batteries? Why I suggested that it shouldn't work is that the peak current requirement of the *ist D is in the order of 1.25A which is almost 5 times the maximum rating of the Muvo PSU. So the risk is to the Muvo supply and secondarily to the camera should the Muvo supply fry in a not so favourable way. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
RE: *ist D and Power sources
On Sun, 18 Jul 2004, Tanya Mayer Photography wrote: > Shaun, if anyone *has* come up with such a solution - I WANT IT! Try using > the *istD with the Hitachi microdrive, no battery grip, and see just how > long the batteries last! I use this setup and have no problem with filling up the drive (about 270 exposures) on a single set of AA batteries. I am using 2200mah AA NiMH cells, nothing too fancy. alex
RE: *ist D and Power sources
On 18 Jul 2004 at 15:03, Tanya Mayer Photography wrote: > I have used it many times > since, with no bad side effects (well, none to my knowledge)... I just looked a bit more carefully, the Muvo PSU input current is 280mA max, output current is 1.5A max which explains why it works. I still think you would be best served with a 6.5VDC supply though. The Muvo plug fits in but it's not quite right. So if anyone wants to have a go at knocking up an *ist D PSU the power connector is an EIAJ DC plug with 4.75mm OD and 1.7mm ID. Just make sure you connect positive on the centre pin and don't use an un-regulated supply. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: *ist D and Power sources
On 18 Jul 2004 at 12:42, Dr. Shaun Canning wrote: > The question is: Is anybody using any alternative power sources to power > their *ist D? For example, has anyone come up with or come across a > 'power pack' that will power the *ist D like a quantum digital power > pack (which is not available for the *ist D). > > Looking forward to some creative answers. OK I have a plausible solution. There are some very high reliability sealed lead acid cells Cyclon which would fit the bill. There is a set of cells that provide 8AH at 6V and can be fully recharged in an hour using a simple constant voltage supply. http://www.enersysreservepower.com/spl.asp?routine=spl See 0859-0012 E Monobloc (Emb) 6V 8.0Ah Let me know if you want some local prices. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: *ist D and Power sources
Hmm, has anyone tried any of the Li-Ion CR-V3 (RCR-V3) batteries at all? Love, Light and Peace, - Peter Loveday Director of Development, eyeon Software
RE: *ist D and Power sources
Alex, are you using Auto focus? Flash? I am amazed that you can get so much! I assume that if you say 270, then you are shooting RAW? (As I do, and I can get 282 exposures) What the heck am I doing wrong?!?!? One thing though, is that I will often delete in field, so I guess for every time I fill the card with 282 exposures, you could probably add another 100 that I've already deleted. Obviously, that would drain the batteries too... :-) tan. -Original Message- From: alex wetmore [mailto:[EMAIL PROTECTED] Sent: Sunday, 18 July 2004 3:25 PM To: [EMAIL PROTECTED] Subject: RE: *ist D and Power sources On Sun, 18 Jul 2004, Tanya Mayer Photography wrote: > Shaun, if anyone *has* come up with such a solution - I WANT IT! Try using > the *istD with the Hitachi microdrive, no battery grip, and see just how > long the batteries last! I use this setup and have no problem with filling up the drive (about 270 exposures) on a single set of AA batteries. I am using 2200mah AA NiMH cells, nothing too fancy. alex
RE: *ist D and Power sources
Rob, how does that thing work?!?! And yeah, how much would it set me back?!?! :-) tan. -Original Message- From: Rob Studdert [mailto:[EMAIL PROTECTED] Sent: Sunday, 18 July 2004 3:50 PM To: [EMAIL PROTECTED] Subject: Re: *ist D and Power sources On 18 Jul 2004 at 12:42, Dr. Shaun Canning wrote: > The question is: Is anybody using any alternative power sources to power > their *ist D? For example, has anyone come up with or come across a > 'power pack' that will power the *ist D like a quantum digital power > pack (which is not available for the *ist D). > > Looking forward to some creative answers. OK I have a plausible solution. There are some very high reliability sealed lead acid cells Cyclon which would fit the bill. There is a set of cells that provide 8AH at 6V and can be fully recharged in an hour using a simple constant voltage supply. http://www.enersysreservepower.com/spl.asp?routine=spl See 0859-0012 E Monobloc (Emb) 6V 8.0Ah Let me know if you want some local prices. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: *ist D and Power sources
a couple of notes on NiMH batteries. first is that many brands have high self-discharge rates. you really need to charge them the night before at the most and the morning of your shoot is better. cheaper battery chargers have charging circuits for pairs of batteries. that means that they charge until the pair are "charged". frequently, that means that one of the batteries reaches full charge first and the other isn't fully charged in a pair. during use, the not-quite-fully charged battery drains first. out of a pack of 4 then, the weakest battery is the limiting factor and because it never really gets fully charged, it gets weaker and weaker in comparison to the other 4. that makes the set look like it is wearing out. you need to get a charger that does each battery individually to get the maximum useful time. it's pretty simple to tell which these are. they are the ones with 4 charging indicator LEDs instead of 2 and don't have a 2/4 switch. i have been experimenting with different brands of NiMH batteries and there is a lot of variation between brands with respect to self-discharge rate and how close they are to their claimed capacity. the Lenmar 2400mAh ones i have seem to be the worst. the Duracell 2050mAh ones seem to be the best. the PowerEx 2100mAh ones seem to be pretty good too. i'm undecided on the Sanyo/GE 2200mAh ones. Sanyo and Duracell manufacture their own. Varta does too. i don't know who else does. all NiMH cells need to go through full charge/deep discharge cycle between 3-5 times before they reach full capacity. nothing seems to affect their self discharge rate. i always carry a set of CR-V5s as backup. they have a very long shelf life and deliver on the order of 1000 shots on CF cards. Herb... - Original Message - From: "Tanya Mayer Photography" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, July 18, 2004 1:03 AM Subject: RE: *ist D and Power sources > > Shaun, if anyone *has* come up with such a solution - I WANT IT! Try using > the *istD with the Hitachi microdrive, no battery grip, and see just how > long the batteries last! I go through 7 sets per wedding, and usually end > up chucking in a set of Duracell's just to "see me through" the tail end...
Re: *ist D and Power sources
i would except there is no charger that handles pairs of them. they look like the ideal solution. their self discharge rate isn't too bad compared to NiMH batteries, although still not great. Herb - Original Message - From: "Peter Loveday" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, July 18, 2004 1:56 AM Subject: Re: *ist D and Power sources > Hmm, has anyone tried any of the Li-Ion CR-V3 (RCR-V3) batteries at all?
Re: *ist D and Power sources
- Original Message - From: "Tanya Mayer Photography" Subject: RE: *ist D and Power sources > One thing though, is that I will often delete in field, so I guess for every > time I fill the card with 282 exposures, you could probably add another 100 > that I've already deleted. Obviously, that would drain the batteries too... If you are deleting in the field, you are also using the LCD, which is the major battery hog. Use the screen less, use it to check histograms avery now and again (especially if your light has changed). I can fill a one gig card shooting jpeg on a set of four 2200 MA NiMh batteries. Thats something like 600 shots on average. William Robb
RE: *ist D and Power sources
On Sun, 18 Jul 2004, Tanya Mayer Photography wrote: > Alex, are you using Auto focus? Flash? I am amazed that you can get so > much! I assume that if you say 270, then you are shooting RAW? (As I do, > and I can get 282 exposures) What the heck am I doing wrong?!?!? I use auto focus, but I don't use the flash. Are you using the RTF? I would guess that for weddings you use an external flash, and this shouldn't have much, if any, additional drain on the batteries in the body. 270 was a guess, I didn't have my *ist D in front of me and didn't remember exactly how many raw photos fit on the 4gb microdrive. I am shooting RAW. > One thing though, is that I will often delete in field, so I guess for every > time I fill the card with 282 exposures, you could probably add another 100 > that I've already deleted. Obviously, that would drain the batteries too... I expect that I could shoot and delete another 100 pictures without changing the batteries. I usually shoot and delete about 30-50 pictures in the field, but not 100. I've never actually had the batteries die in this camera, I've just changed them after long days of shooting figuring that they might die if I keep going. alex
Re: *ist D and Power sources
On 18 Jul 2004 at 7:51, William Robb wrote: > If you are deleting in the field, you are also using the LCD, which > is the major battery hog. > Use the screen less, use it to check histograms avery now and again > (especially if your light has changed). > I can fill a one gig card shooting jpeg on a set of four 2200 MA NiMh > batteries. Thats something like 600 shots on average. I can fill my 2GB CF NVRAM card with RAW files about 3 times on one set of 2100mAH Ni-MH cells. I don't however review every shot or use the RTF or engage AF. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
RE: *ist D and Power sources
*Rechargeable* CR-V3's are the optimal solution. Yes they're pricey to get, at about 25 bucks EACH. Thats 150+ once you factor in the chargers, but, they have nearly the lifespan of a CR-V3, and more importantly, they provide FULL POWER even when only half charged... This is not the case with NiMH batteries whose voltage will slowly tail off until they run completely out. -el gringo -Original Message- From: Mark Roberts [mailto:[EMAIL PROTECTED] Sent: Sunday, July 18, 2004 6:44 PM To: [EMAIL PROTECTED] Subject: Re: *ist D and Power sources "Rob Studdert" <[EMAIL PROTECTED]> wrote: >On 18 Jul 2004 at 15:03, Tanya Mayer Photography wrote: > >> BTW, I posted this once before, but I'm not sure if anyone noticed. I >> "discovered" that the AC Adapter for the MUVO works perfectly with the >> *istD! I haven't found anywhere that I can buy the AC Adapter that is >> supposedly available to suit the camera, so one night, I got brave and >> risked blowing up my camera by plugging the MUVO adapter in. I used it >> solidly for 4 hours and it worked like a dream! I have used it many times >> since, with no bad side effects (well, none to my knowledge)... > >LOL. Dare-devil. > >I just checked the Muvo PSU, it's rated to provide 5VDC @ 280mA, the camera >specification are 6.5VDC therefore you probably won't cause damage but I'm >surprised it worked. I'm not. Using the ist-D with 4 NiMH batteries (1.25 Volts each) provides 5 Volts total so we know the camera can operate from that Voltage. Computer-driven portable devices like the ist-D typically use many individual switching power supply chips (they're really tiny now) and don't rely on the raw power supply input for any of their subsystems. As long as the outboard supply can provide sufficient current it should be fine through a wide range of voltages. What's more, since the MUVO power pack is probably itself a switching supply, its failure mode is almost certainly going to be zero volts, rather than full unregulated voltage, like a linear power supply. In all likelihood, if there ever *is* a problem with the MUVO supply, it'll just go into over-temperature or over-current shutdown. No drama (but no power, either!) -- Mark Roberts Photography and writing www.robertstech.com
Re: *ist D and Power sources
On 7/19 Shaun Canning wrote: "An optimal solution would have been for Pentax too release the *ist D with a proprietry Li-ion rechargeable battery simalar to those used in other Pentax digital cameras" Then we would have another PDML thread about those darn expensive Pentax Li-ion rechargeable batteries & why didn't Pentax do something else battery wise. Kenneth Waller -Original Message- From: "Dr. Shaun Canning" <[EMAIL PROTECTED]> Sent: Jul 19, 2004 4:31 AM To: [EMAIL PROTECTED] Subject: Re: *ist D and Power sources I disagree. The CR-V3 rechargeables are not the 'optimal' solution at all. An optimal solution would have been for Pentax too release the *ist D with a proprietry Li-ion rechargeable battery simalar to those used in other Pentax digital cameras. Then again, a fuel cell might be nice... Cheers Shaun El Gringo wrote: >*Rechargeable* CR-V3's are the optimal solution. Yes they're pricey to get, >at about 25 bucks EACH. Thats 150+ once you factor in the chargers, but, >they have nearly the lifespan of a CR-V3, and more importantly, they provide >FULL POWER even when only half charged... This is not the case with NiMH >batteries whose voltage will slowly tail off until they run completely out. > >-el gringo > >-Original Message- >From: Mark Roberts [mailto:[EMAIL PROTECTED] >Sent: Sunday, July 18, 2004 6:44 PM >To: [EMAIL PROTECTED] >Subject: Re: *ist D and Power sources > > >"Rob Studdert" <[EMAIL PROTECTED]> wrote: > > > >>On 18 Jul 2004 at 15:03, Tanya Mayer Photography wrote: >> >> >> >>>BTW, I posted this once before, but I'm not sure if anyone noticed. I >>>"discovered" that the AC Adapter for the MUVO works perfectly with the >>>*istD! I haven't found anywhere that I can buy the AC Adapter that is >>>supposedly available to suit the camera, so one night, I got brave and >>>risked blowing up my camera by plugging the MUVO adapter in. I used it >>>solidly for 4 hours and it worked like a dream! I have used it many >>> >>> >times > > >>>since, with no bad side effects (well, none to my knowledge)... >>> >>> >>LOL. Dare-devil. >> >>I just checked the Muvo PSU, it's rated to provide 5VDC @ 280mA, the camera >>specification are 6.5VDC therefore you probably won't cause damage but I'm >>surprised it worked. >> >> > >I'm not. Using the ist-D with 4 NiMH batteries (1.25 Volts each) >provides 5 Volts total so we know the camera can operate from that >Voltage. Computer-driven portable devices like the ist-D typically use >many individual switching power supply chips (they're really tiny now) >and don't rely on the raw power supply input for any of their >subsystems. As long as the outboard supply can provide sufficient >current it should be fine through a wide range of voltages. What's more, >since the MUVO power pack is probably itself a switching supply, its >failure mode is almost certainly going to be zero volts, rather than >full unregulated voltage, like a linear power supply. In all likelihood, >if there ever *is* a problem with the MUVO supply, it'll just go into >over-temperature or over-current shutdown. No drama (but no power, >either!) > >-- >Mark Roberts >Photography and writing >www.robertstech.com > > > > -- _ Dr. Shaun Canning P.O. Box 21, Dampier, WA, 6714, Australia. m: 0414 967644 http://www.heritageservices.com.au [EMAIL PROTECTED] _ PeoplePC Online A better way to Internet http://www.peoplepc.com
Re: *ist D and Power sources
LOL! Yeah, Ken your probably right We all whinge about everything regardless of its merit. Take the *ist D for example...(I love mine incidentally). Has there been some bitching about this thing since it hit the shelves Cheers Shaun Kenneth Waller wrote: On 7/19 Shaun Canning wrote: "An optimal solution would have been for Pentax too release the *ist D with a proprietry Li-ion rechargeable battery simalar to those used in other Pentax digital cameras" Then we would have another PDML thread about those darn expensive Pentax Li-ion rechargeable batteries & why didn't Pentax do something else battery wise. Kenneth Waller -Original Message- From: "Dr. Shaun Canning" <[EMAIL PROTECTED]> Sent: Jul 19, 2004 4:31 AM To: [EMAIL PROTECTED] Subject: Re: *ist D and Power sources I disagree. The CR-V3 rechargeables are not the 'optimal' solution at all. An optimal solution would have been for Pentax too release the *ist D with a proprietry Li-ion rechargeable battery simalar to those used in other Pentax digital cameras. Then again, a fuel cell might be nice... Cheers Shaun El Gringo wrote: *Rechargeable* CR-V3's are the optimal solution. Yes they're pricey to get, at about 25 bucks EACH. Thats 150+ once you factor in the chargers, but, they have nearly the lifespan of a CR-V3, and more importantly, they provide FULL POWER even when only half charged... This is not the case with NiMH batteries whose voltage will slowly tail off until they run completely out. -el gringo -Original Message- From: Mark Roberts [mailto:[EMAIL PROTECTED] Sent: Sunday, July 18, 2004 6:44 PM To: [EMAIL PROTECTED] Subject: Re: *ist D and Power sources "Rob Studdert" <[EMAIL PROTECTED]> wrote: On 18 Jul 2004 at 15:03, Tanya Mayer Photography wrote: BTW, I posted this once before, but I'm not sure if anyone noticed. I "discovered" that the AC Adapter for the MUVO works perfectly with the *istD! I haven't found anywhere that I can buy the AC Adapter that is supposedly available to suit the camera, so one night, I got brave and risked blowing up my camera by plugging the MUVO adapter in. I used it solidly for 4 hours and it worked like a dream! I have used it many times since, with no bad side effects (well, none to my knowledge)... LOL. Dare-devil. I just checked the Muvo PSU, it's rated to provide 5VDC @ 280mA, the camera specification are 6.5VDC therefore you probably won't cause damage but I'm surprised it worked. I'm not. Using the ist-D with 4 NiMH batteries (1.25 Volts each) provides 5 Volts total so we know the camera can operate from that Voltage. Computer-driven portable devices like the ist-D typically use many individual switching power supply chips (they're really tiny now) and don't rely on the raw power supply input for any of their subsystems. As long as the outboard supply can provide sufficient current it should be fine through a wide range of voltages. What's more, since the MUVO power pack is probably itself a switching supply, its failure mode is almost certainly going to be zero volts, rather than full unregulated voltage, like a linear power supply. In all likelihood, if there ever *is* a problem with the MUVO supply, it'll just go into over-temperature or over-current shutdown. No drama (but no power, either!) -- Mark Roberts Photography and writing www.robertstech.com -- _ Dr. Shaun Canning P.O. Box 21, Dampier, WA, 6714, Australia. m: 0414 967644 http://www.heritageservices.com.au [EMAIL PROTECTED] _
Re: *ist D and Power sources
På 19. jul. 2004 kl. 15.11 skrev Kenneth Waller: On 7/19 Shaun Canning wrote: "An optimal solution would have been for Pentax too release the *ist D with a proprietry Li-ion rechargeable battery simalar to those used in other Pentax digital cameras" Then we would have another PDML thread about those darn expensive Pentax Li-ion rechargeable batteries & why didn't Pentax do something else battery wise. Kenneth Waller That´s´true. Some non-Pentax people have been praising the AA compatibility of the *istD as a great advantage with the camera. DagT
Re: *ist D and Power sources
On 19 Jul 2004 at 0:00, Kenneth Waller wrote: > Then we would have another PDML thread about those darn expensive Pentax Li-ion > rechargeable batteries & why didn't Pentax do something else battery wise. I think you'll find the fact that Pentax chose to utilize readily available AA cells as a power source was one of their "good" ideas, hence the relative lack of complaints. Surely you're pleased that we've reverted back to discussing Pentax equipment on the PDML? Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: *ist D and Power sources
On Mon, 19 Jul 2004, DagT wrote: > Some non-Pentax people have been praising the AA compatibility of the > *istD as a great advantage with the camera. It is a major selling point for me. On vacations I don't want to carry one charger per device. Having more devices that can use a common AA charger is a big benefit. On recent long vacations I've brought: * laptop - proprietary charger * digital camera - proprietary charger (no more with the *ist D) * GPS - AA * iPod - proprietary charger * cell phone - proprietary charger * flashlight/bicycle headlight - AA This makes for a massive mess of cables. One less recharger is a big benefit (and would be even bigger if I switched to a MP3 player that used AA... I figure I have little choice with the cell phone or laptop). alex
Re: *ist D and Power sources
I have an *ist D and an Optio S. The Optio S has a Li-ion battery as its only source of DC power. It's ok functionally, but it is only replaceable by another Pentax Li-ion battery (so I carry several with me). With the *ist D, at least there are other readily available options than a Pentax only source battery. -Original Message- From: "Dr. Shaun Canning" <[EMAIL PROTECTED]> Subject: Re: *ist D and Power sources LOL! Yeah, Ken your probably right We all whinge about everything regardless of its merit. Take the *ist D for example...(I love mine incidentally). Has there been some bitching about this thing since it hit the shelves Cheers Shaun Kenneth Waller wrote: >On 7/19 Shaun Canning wrote: > >"An optimal solution would have been for Pentax too release the *ist >D with a proprietry Li-ion rechargeable battery simalar to those used in >other Pentax digital cameras" > >Then we would have another PDML thread about those darn expensive Pentax Li-ion >rechargeable batteries >& why didn't Pentax do something else battery wise. > >Kenneth Waller > >-Original Message- >From: "Dr. Shaun Canning" <[EMAIL PROTECTED]> >Sent: Jul 19, 2004 4:31 AM >To: [EMAIL PROTECTED] >Subject: Re: *ist D and Power sources > >I disagree. The CR-V3 rechargeables are not the 'optimal' solution at >all. An optimal solution would have been for Pentax too release the *ist >D with a proprietry Li-ion rechargeable battery simalar to those used in >other Pentax digital cameras. Then again, a fuel cell might be nice... > >Cheers > >Shaun > >El Gringo wrote: > > > >>*Rechargeable* CR-V3's are the optimal solution. Yes they're pricey to get, >>at about 25 bucks EACH. Thats 150+ once you factor in the chargers, but, >>they have nearly the lifespan of a CR-V3, and more importantly, they provide >>FULL POWER even when only half charged... This is not the case with NiMH >>batteries whose voltage will slowly tail off until they run completely out. >> >>-el gringo >> >>-Original Message- >>From: Mark Roberts [mailto:[EMAIL PROTECTED] >>Sent: Sunday, July 18, 2004 6:44 PM >>To: [EMAIL PROTECTED] >>Subject: Re: *ist D and Power sources >> >> >>"Rob Studdert" <[EMAIL PROTECTED]> wrote: >> >> >> >> >> >>>On 18 Jul 2004 at 15:03, Tanya Mayer Photography wrote: >>> >>> >>> >>> >>> >>>>BTW, I posted this once before, but I'm not sure if anyone noticed. I >>>>"discovered" that the AC Adapter for the MUVO works perfectly with the >>>>*istD! I haven't found anywhere that I can buy the AC Adapter that is >>>>supposedly available to suit the camera, so one night, I got brave and >>>>risked blowing up my camera by plugging the MUVO adapter in. I used it >>>>solidly for 4 hours and it worked like a dream! I have used it many >>>> >>>> >>>> >>>> >>times >> >> >> >> >>>>since, with no bad side effects (well, none to my knowledge)... >>>> >>>> >>>> >>>> >>>LOL. Dare-devil. >>> >>>I just checked the Muvo PSU, it's rated to provide 5VDC @ 280mA, the camera >>>specification are 6.5VDC therefore you probably won't cause damage but I'm >>>surprised it worked. >>> >>> >>> >>> >>I'm not. Using the ist-D with 4 NiMH batteries (1.25 Volts each) >>provides 5 Volts total so we know the camera can operate from that >>Voltage. Computer-driven portable devices like the ist-D typically use >>many individual switching power supply chips (they're really tiny now) >>and don't rely on the raw power supply input for any of their >>subsystems. As long as the outboard supply can provide sufficient >>current it should be fine through a wide range of voltages. What's more, >>since the MUVO power pack is probably itself a switching supply, its >>failure mode is almost certainly going to be zero volts, rather than >>full unregulated voltage, like a linear power supply. In all likelihood, >>if there ever *is* a problem with the MUVO supply, it'll just go into >>over-temperature or over-current shutdown. No drama (but no power, >>either!) >> >>-- >>Mark Roberts >>Photography and writing >>www.robertstech.com >> >> >> >> >> >> > > > -- _ Dr. Shaun Canning P.O. Box 21, Dampier, WA, 6714, Australia. m: 0414 967644 http://www.heritageservices.com.au [EMAIL PROTECTED] _ PeoplePC Online A better way to Internet http://www.peoplepc.com
Re: *ist D and Power sources
Rob rote: >"I think you'll find the fact that Pentax chose to utilize readily available AA >cells as a power source was one of their good" ideas" No question about that And >"Surely you're pleased that we've reverted back to discussing >Pentax equipment on the PDML?" Ditto Kenneth Waller -Original Message----- From: Rob Studdert <[EMAIL PROTECTED]> Subject: Re: *ist D and Power sources On 19 Jul 2004 at 0:00, Kenneth Waller wrote: > Then we would have another PDML thread about those darn expensive Pentax Li-ion > rechargeable batteries & why didn't Pentax do something else battery wise. I think you'll find the fact that Pentax chose to utilize readily available AA cells as a power source was one of their "good" ideas, hence the relative lack of complaints. Surely you're pleased that we've reverted back to discussing Pentax equipment on the PDML? Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998 PeoplePC Online A better way to Internet http://www.peoplepc.com
Re: *ist D and Power sources
On Mon, 19 Jul 2004, William Robb wrote: > > Sure, as long as you in fairly civilized areas I agree. But > sometimes I > > go outdoors and stay there for some days and other times I travel > to > > countries were charging is not readily available. In both cases AA > > batteries are available in any shop I can find, which gives me a > nice > > option. > > > > I talked to a D100 owner last week, and he was not very happy with > the > > battery solution it had. > > Sometimes you just have to look at the digital problems and find that > a nice mechanical film camera is the solution. A roll of film is about as big and heavy as two CRV3 batteries (or a little lighter, but as bulky, as 44 AA ones). It only takes 36 pictures though, where I can shoot a few hundred to a few thousand on the batteries. A 4gb Microdrive when shooting JPEG is enough for quite a lot of backpacking or bicycle touring time for me. The amount of gear that I'm carrying related to photography has dropped with digital, not increased. On one week bike tours (camping) I'd always end up carrying my MZ-5n, spare batteries, and about 10 rolls of film. Film gets bulky. alex
Re: *ist D and Power sources
They still don't have AA rechargables on the market over there, Cotty? You should have picked some up while you were here in the US. HAR! For perspective! If Cotty had needed to replace the battery in his Canon while at GFM he could have ran over to Ashville (2+ hour round trip), if one of the *istD users need to replace his batteries he could have gotten them in the gift shop (20 feet from the auditorium or cafeteria) 1/4 mile from PDML Central. Hum..? I wonder if they had D cells for my Graflite flash? Flashbulbs..? -- Cotty wrote: Guys, I have to say that IMO using AA batteries bought off the shelf is a sad waste of resources. I would urge anyone who has the opportunity to, to purchase a system of powering their electronic devices that ensures maximum recycling. Rechargeable batteries are mandatory (again, IMO). Think about how many AA batteries you get through in a year, and where do they all go when you've finished with them? Straight into the trash. What a terrible waste (recyclable flame proof suit zipped up at the ready ;-) -- graywolf http://graywolfphoto.com/graywolf.html
Re: *ist D and Power sources
Well, I don't know. Without batteries the blinky-lights on my MX are don't work. How the heck can you take photos without blinky-lights? And speaking of all this digital stuff. My Sekonic L-308B digital light/flash meter went on the blink last year at GFM. It got steadily worse, and was not working at all at the NFW there this year. Now, the last couple of weeks, it has been working perfectly. I think the little deamon in it had gone home to Diskworld for vacation, and only recently returned. -- William Robb wrote: Sometimes you just have to look at the digital problems and find that a nice mechanical film camera is the solution. -- graywolf http://graywolfphoto.com/graywolf.html
Re: *ist D and Power sources
On 19/7/04, graywolf, discombobulated, offered: >They still don't have AA rechargables on the market over there, Cotty? You >should have picked some up while you were here in the US. HAR! I had 2 sets of 4 NiMHs on me for use in the flash, mate. > >For perspective! If Cotty had needed to replace the battery in his Canon >while >at GFM he could have ran over to Ashville (2+ hour round trip), if one of the >*istD users need to replace his batteries he could have gotten them in >the gift >shop (20 feet from the auditorium or cafeteria) 1/4 mile from PDML Central. >Hum..? I wonder if they had D cells for my Graflite flash? Flashbulbs..? The point is, I don't need to replace them. I brought 3 proprietary batteries plus the charger to GFM. I didn't need the charger. Photography is partly about being prepared, no? If you go out with a film camera and one roll of film, then you either know what you are doing or you do not. If you go out with a digital camera and not enough batteries, ditto. So what you are saying is that the gift shop is for those who don't know what they are doing? HAR! Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|www.macads.co.uk/snaps _
Re: *ist D and Power sources
AA was SO smart! Cory A Pentax person extolling the virtues of AA over some goofy proprietary battery that will cost an arm and leg to replace and won't be available in three years... - Original Message - From: "DagT" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, July 19, 2004 10:23 AM Subject: Re: *ist D and Power sources > > På 19. jul. 2004 kl. 15.11 skrev Kenneth Waller: > > > On 7/19 Shaun Canning wrote: > > > > "An optimal solution would have been for Pentax too release the *ist > > D with a proprietry Li-ion rechargeable battery simalar to those used > > in > > other Pentax digital cameras" > > > > Then we would have another PDML thread about those darn expensive > > Pentax Li-ion rechargeable batteries > > & why didn't Pentax do something else battery wise. > > > > Kenneth Waller > > That´s´true. > > Some non-Pentax people have been praising the AA compatibility of the > *istD as a great advantage with the camera. > > DagT > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.720 / Virus Database: 476 - Release Date: 7/18/2004
Re: *ist D and Power sources
Well, it looks like my solution might be to buy some better batteries and a better quality charger. A Quantum rig would cost about $1300 apparently. There are other solutions that are being nutted out, but none of them are as cheap as more batteries and a better charger. Cheers Shaun Tanya Mayer Photography wrote: Shaun, if anyone *has* come up with such a solution - I WANT IT! Try using the *istD with the Hitachi microdrive, no battery grip, and see just how long the batteries last! I go through 7 sets per wedding, and usually end up chucking in a set of Duracell's just to "see me through" the tail end... If there was a Quantum pack, or equivalent, I'd be lining up for it... BTW, I posted this once before, but I'm not sure if anyone noticed. I "discovered" that the AC Adapter for the MUVO works perfectly with the *istD! I haven't found anywhere that I can buy the AC Adapter that is supposedly available to suit the camera, so one night, I got brave and risked blowing up my camera by plugging the MUVO adapter in. I used it solidly for 4 hours and it worked like a dream! I have used it many times since, with no bad side effects (well, none to my knowledge)... tan. -Original Message- From: Dr. Shaun Canning [mailto:[EMAIL PROTECTED] Sent: Sunday, 18 July 2004 2:43 PM To: Pentax-Discuss Subject: *ist D and Power sources Hi gang, Here's a question for all the knowledgable *ist D owners out there to ponder. I use 2300 mah Nimh rechargeable batteries in my *ist D and AF360 flash (12 all up - 8 in camera, 4 in flash). While I am reasonably happy with this setup, it is sometimes left wanting. Particulalry when shooting RAW or TIFF images, there is a noticable faster drain on the batteries life than with JPEG (which makes perfect sense with all the extra disk writing etc). The question is: Is anybody using any alternative power sources to power their *ist D? For example, has anyone come up with or come across a 'power pack' that will power the *ist D like a quantum digital power pack (which is not available for the *ist D). Looking forward to some creative answers. Cheers Shaun -- _ Dr. Shaun Canning P.O. Box 21, Dampier, WA, 6714, Australia. m: 0414 967644 http://www.heritageservices.com.au [EMAIL PROTECTED] _ -- _ Dr. Shaun Canning P.O. Box 21, Dampier, WA, 6714, Australia. m: 0414 967644 http://www.heritageservices.com.au [EMAIL PROTECTED] _
Re: *ist D and Power sources
I disagree. The CR-V3 rechargeables are not the 'optimal' solution at all. An optimal solution would have been for Pentax too release the *ist D with a proprietry Li-ion rechargeable battery simalar to those used in other Pentax digital cameras. Then again, a fuel cell might be nice... Cheers Shaun El Gringo wrote: *Rechargeable* CR-V3's are the optimal solution. Yes they're pricey to get, at about 25 bucks EACH. Thats 150+ once you factor in the chargers, but, they have nearly the lifespan of a CR-V3, and more importantly, they provide FULL POWER even when only half charged... This is not the case with NiMH batteries whose voltage will slowly tail off until they run completely out. -el gringo -Original Message- From: Mark Roberts [mailto:[EMAIL PROTECTED] Sent: Sunday, July 18, 2004 6:44 PM To: [EMAIL PROTECTED] Subject: Re: *ist D and Power sources "Rob Studdert" <[EMAIL PROTECTED]> wrote: On 18 Jul 2004 at 15:03, Tanya Mayer Photography wrote: BTW, I posted this once before, but I'm not sure if anyone noticed. I "discovered" that the AC Adapter for the MUVO works perfectly with the *istD! I haven't found anywhere that I can buy the AC Adapter that is supposedly available to suit the camera, so one night, I got brave and risked blowing up my camera by plugging the MUVO adapter in. I used it solidly for 4 hours and it worked like a dream! I have used it many times since, with no bad side effects (well, none to my knowledge)... LOL. Dare-devil. I just checked the Muvo PSU, it's rated to provide 5VDC @ 280mA, the camera specification are 6.5VDC therefore you probably won't cause damage but I'm surprised it worked. I'm not. Using the ist-D with 4 NiMH batteries (1.25 Volts each) provides 5 Volts total so we know the camera can operate from that Voltage. Computer-driven portable devices like the ist-D typically use many individual switching power supply chips (they're really tiny now) and don't rely on the raw power supply input for any of their subsystems. As long as the outboard supply can provide sufficient current it should be fine through a wide range of voltages. What's more, since the MUVO power pack is probably itself a switching supply, its failure mode is almost certainly going to be zero volts, rather than full unregulated voltage, like a linear power supply. In all likelihood, if there ever *is* a problem with the MUVO supply, it'll just go into over-temperature or over-current shutdown. No drama (but no power, either!) -- Mark Roberts Photography and writing www.robertstech.com -- _ Dr. Shaun Canning P.O. Box 21, Dampier, WA, 6714, Australia. m: 0414 967644 http://www.heritageservices.com.au [EMAIL PROTECTED] _
Re: *ist D and Power sources
DagT wrote: På 19. jul. 2004 kl. 19.13 skrev DagT: På 19. jul. 2004 kl. 18.56 skrev William Robb: - Original Message - From: "DagT" Subject: Re: *ist D and Power sources Sure, as long as you in fairly civilized areas I agree. But sometimes I go outdoors and stay there for some days and other times I travel to countries were charging is not readily available. In both cases AA batteries are available in any shop I can find, which gives me a nice option. I talked to a D100 owner last week, and he was not very happy with the battery solution it had. Sometimes you just have to look at the digital problems and find that a nice mechanical film camera is the solution. That´s why I keep the LX :-) But what I really would like to see is a rewindable dslr camera. Oooops, sorry about the English I didn´t have a dictionary, it sould be windable - I think... DagT I think either would be correct, since the camera supports both functions...
Re: *ist D and Power sources
On 19/7/04, arnie, discombobulated, offered: >The other I went to downtown Manhattan to take some pictures and lo! my >rechargable cr-v3's are dead! so i went into the nearest shop, bought a pack >of AA's, and went on shooting. > >I love Pentax! > >arnie Sorry, I just can't get my head around this notion. So if you had gone downtown to Manhattan with a film camera to tale some pictures, and lo you only had 4 exposures left, presumably you would go into the nearest shop and by some more? Maybe sort of like driving a car - when the fuel gets low, you just go buy some more? Doesn't anyone prepare in this day and age or am I the only one? Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|www.macads.co.uk/snaps _
Re: *ist D and Power sources
On 20/7/04, Kristian Walsh, discombobulated, offered: >> The point is, I don't need to replace them. I brought 3 proprietary >> batteries plus the charger to GFM. >On the other hand: Lithium-Ion batteries lose their effectiveness after >about 24-30 months, whether you use them or not, so buying three could >be construed as a waste of the earth's resources ;-) Hmm, point taken. Nothing lasts forever tho ;-) I have not noticed any appreciable loss of effectiveness after 22 months > > >(I heartily agree about buying rechargeable batteries, though) GOOD ! Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|www.macads.co.uk/snaps _
Re: *ist D and Power sources
On 20/7/04, Daniel J. Matyola, discombobulated, offered: >Batteries sometimes get lost; chargers can be lost or damaged. It is >great to have a camera like the *ist d that can utilize AA batteries >from the corner convenience store in an emergency. Point taken. I have yet to encounter a photographic emergency Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=|www.macads.co.uk/snaps _
Re: *ist D and Power sources
You are obviously not as careless or clumbsy as I am! Cotty wrote: On 20/7/04, Daniel J. Matyola, discombobulated, offered: Batteries sometimes get lost; chargers can be lost or damaged. It is great to have a camera like the *ist d that can utilize AA batteries from the corner convenience store in an emergency. Point taken. I have yet to encounter a photographic emergency
