Front Element Protection (was: Dropped K200D)
Is there such a thing as a final verdict on UV vs Skylight vs 'Protection' (whatever those are - do they block overprotective rays?) Filters? I need to buy one for my 16-50 seeing the time I spend in sandboxes with my camera these days... a blower wont do the trick for me all the time. Thanks Ecke 2009/9/9 Larry Levy : > I come from the capital K Klutz school of carefulness. Starting with the > 10D, I've been putting Giottos Aegis screens on the LCDs. It's a lot cheaper > to replace if (when) something goes wrong. > > I'm also one of those who typically puts a UV filter in front of the lens. > When I dropped my camera bag in an airport, the only damage was some > cross-threading in the lens (which Eric fixed for me) and the replacement of > the filter (which had given itself up to save the lens). > > Larry in Dallas > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
AFAIK, "normal" glass is opaque to UV rays. You need flourite lenses to photograph in the UV spectrum, while much of what is known as UV photography is actually flourescence photography. I don't know what the transmission characteristics of ED glass is. Which means that UV filters won't contribute to elimination of UV light from your shots, because none is getting through your lens anyway. OTOH, they usually remove a little of the barely visible near UV, so will trim some excessive blueness from overcast or open shadow light when you're using film and can't adjust white balance per shot. Skylight filters just cut a little into visible blue wavelengths while UV filters only cut invisible blue wavelengths, but not enough to matter when you can tweak the WB instead. Which raises another matter. FIlm was oversensitized to UV so vulnerable to shifts in that direction. Digital sensors, especially CCDs, are oversensitized to IR but are usually protected by "hot filters" (more or less effectively from one camera model to another). They are relatively insensitive to UV light. Which leaves protection as the only real motive for using a UV filter. I live on the coast, and feel better about cleaning dried salt off a filter than off a lens. regards, Anthony "Of what use is lens and light to those who lack in mind and sight" (Anon) 2009/9/9 eckinator : > Is there such a thing as a final verdict on UV vs Skylight vs > 'Protection' (whatever those are - do they block overprotective rays?) > Filters? > I need to buy one for my 16-50 seeing the time I spend in sandboxes > with my camera these days... a blower wont do the trick for me all the > time. > Thanks > Ecke > > 2009/9/9 Larry Levy : >> I come from the capital K Klutz school of carefulness. Starting with the >> 10D, I've been putting Giottos Aegis screens on the LCDs. It's a lot cheaper >> to replace if (when) something goes wrong. >> >> I'm also one of those who typically puts a UV filter in front of the lens. >> When I dropped my camera bag in an airport, the only damage was some >> cross-threading in the lens (which Eric fixed for me) and the replacement of >> the filter (which had given itself up to save the lens). >> >> Larry in Dallas >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
Anthony's answer is clear IMO although I will just add the following: Filters are nice but a bad or medium quality filter risks to get you only into constant image quality problems such as reflections you wouldn't get otherwise. I'd suggest buying good ones like Pentax SMC filters, High grade Hoya, B+W or comparable ones. On Wed, Sep 9, 2009 at 10:06 AM, eckinator wrote: > Is there such a thing as a final verdict on UV vs Skylight vs > 'Protection' (whatever those are - do they block overprotective rays?) > Filters? > I need to buy one for my 16-50 seeing the time I spend in sandboxes > with my camera these days... a blower wont do the trick for me all the > time. > Thanks > Ecke > > 2009/9/9 Larry Levy : >> I come from the capital K Klutz school of carefulness. Starting with the >> 10D, I've been putting Giottos Aegis screens on the LCDs. It's a lot cheaper >> to replace if (when) something goes wrong. >> >> I'm also one of those who typically puts a UV filter in front of the lens. >> When I dropped my camera bag in an airport, the only damage was some >> cross-threading in the lens (which Eric fixed for me) and the replacement of >> the filter (which had given itself up to save the lens). >> >> Larry in Dallas >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- Thibault Massart aka Thibouille -- Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... Thinkpad: X23+UB,X60+UB Programing: D7 user (trying out D2007) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
RE: Front Element Protection (was: Dropped K200D)
>From what I recall, the Pentax SMC coatings fitlered UV considerably but old single coated or uncoated lenses passed much more UV spectrum and benefitted from using UV filters more than SMC lenses for high UV conditions. -- J.C. O'Connell (mailto:hifis...@gate.net) Home Page - www.jchriso.com Join the Audio CD PLAYER DISCUSSION list - http://tech.groups.yahoo.com/group/cdplayers/ -Original Message- From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of Anthony Farr Sent: Wednesday, September 09, 2009 7:38 AM To: Pentax-Discuss Mail List Subject: Re: Front Element Protection (was: Dropped K200D) AFAIK, "normal" glass is opaque to UV rays. You need flourite lenses to photograph in the UV spectrum, while much of what is known as UV photography is actually flourescence photography. I don't know what the transmission characteristics of ED glass is. Which means that UV filters won't contribute to elimination of UV light from your shots, because none is getting through your lens anyway. OTOH, they usually remove a little of the barely visible near UV, so will trim some excessive blueness from overcast or open shadow light when you're using film and can't adjust white balance per shot. Skylight filters just cut a little into visible blue wavelengths while UV filters only cut invisible blue wavelengths, but not enough to matter when you can tweak the WB instead. Which raises another matter. FIlm was oversensitized to UV so vulnerable to shifts in that direction. Digital sensors, especially CCDs, are oversensitized to IR but are usually protected by "hot filters" (more or less effectively from one camera model to another). They are relatively insensitive to UV light. Which leaves protection as the only real motive for using a UV filter. I live on the coast, and feel better about cleaning dried salt off a filter than off a lens. regards, Anthony "Of what use is lens and light to those who lack in mind and sight" (Anon) 2009/9/9 eckinator : > Is there such a thing as a final verdict on UV vs Skylight vs > 'Protection' (whatever those are - do they block overprotective rays?) > Filters? I need to buy one for my 16-50 seeing the time I spend in > sandboxes with my camera these days... a blower wont do the trick for > me all the time. > Thanks > Ecke > > 2009/9/9 Larry Levy : >> I come from the capital K Klutz school of carefulness. Starting with >> the 10D, I've been putting Giottos Aegis screens on the LCDs. It's a >> lot cheaper to replace if (when) something goes wrong. >> >> I'm also one of those who typically puts a UV filter in front of the >> lens. When I dropped my camera bag in an airport, the only damage was >> some cross-threading in the lens (which Eric fixed for me) and the >> replacement of the filter (which had given itself up to save the >> lens). >> >> Larry in Dallas >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above >> and follow the directions. >> > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
Hi Ecke, I have transparent lens caps (AKA UV Filters) on all my lenses. As with all lens caps they can be taken off when necessary to improve your picture, but are far cheaper to replace than a front element of a 60-250 or 12-24 lens, and I tend to take pictures in some really silly places at times. It's worth the money to buy a good quality one, though I have had a couple of Hoya filters show markings possibly due to salt spray - though I can't be sure. I'd got for Pentax or B&W if they are available near you - I'm going to order from B&H from now on as Pentax and B&W filters are near impossible to get in Australia. Leon 2009/9/9 eckinator : > Is there such a thing as a final verdict on UV vs Skylight vs > 'Protection' (whatever those are - do they block overprotective rays?) > Filters? > I need to buy one for my 16-50 seeing the time I spend in sandboxes > with my camera these days... a blower wont do the trick for me all the > time. > Thanks > Ecke > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
Thanks all =) I have a Hoya Pro 1 Digital Slim UV on my 18-250 which is a huge pain to clean on the road as it tends to smear. I usually put it in my eyeglass cleaning shaker at home for OK results or stop by an optician and have them run it through their ultrasonic cleaner; most do it as a courtesy. So obviously I don't want another one of those even though I like the idea of cross funding Pentax by buying Hoya. I heard good things about B+W and Heliopan, I didn't even know there were Pentax filters and I recall reading here that Rodenstock is relabeled Heliopan. I want to buy a good one because of IQ, but my priority is on ease of cleaning... dang, I should have said that right away. Recommendations anyone? Thanks in advance Ecke 2009/9/9 Leon Altoff : > Hi Ecke, > > I have transparent lens caps (AKA UV Filters) on all my lenses. As > with all lens caps they can be taken off when necessary to improve > your picture, but are far cheaper to replace than a front element of a > 60-250 or 12-24 lens, and I tend to take pictures in some really silly > places at times. > > It's worth the money to buy a good quality one, though I have had a > couple of Hoya filters show markings possibly due to salt spray - > though I can't be sure. I'd got for Pentax or B&W if they are > available near you - I'm going to order from B&H from now on as Pentax > and B&W filters are near impossible to get in Australia. > > Leon > > 2009/9/9 eckinator : >> Is there such a thing as a final verdict on UV vs Skylight vs >> 'Protection' (whatever those are - do they block overprotective rays?) >> Filters? >> I need to buy one for my 16-50 seeing the time I spend in sandboxes >> with my camera these days... a blower wont do the trick for me all the >> time. >> Thanks >> Ecke >> > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
eckinator wrote: >Is there such a thing as a final verdict on UV vs Skylight vs >'Protection' (whatever those are - do they block overprotective rays?) >Filters? >I need to buy one for my 16-50 seeing the time I spend in sandboxes >with my camera these days... a blower wont do the trick for me all the >time. I almost never use protective filters on any of my lenses. I have Pentax SMC filters for my larger lenses (16-50/2.8, 28-70/2.8 and 80-200/2.8) but I use them only on rare occasions when I know I'm going to be in adverse environmental conditions for an extended period. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
RE: Front Element Protection (was: Dropped K200D)
I spray all of my lenses with Rhino Coat and then take pictures with a P&S. -Original Message- From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of Mark Roberts Sent: Wednesday, September 09, 2009 9:10 AM To: Pentax-Discuss Mail List Subject: Re: Front Element Protection (was: Dropped K200D) eckinator wrote: >Is there such a thing as a final verdict on UV vs Skylight vs >'Protection' (whatever those are - do they block overprotective rays?) >Filters? >I need to buy one for my 16-50 seeing the time I spend in sandboxes >with my camera these days... a blower wont do the trick for me all the >time. I almost never use protective filters on any of my lenses. I have Pentax SMC filters for my larger lenses (16-50/2.8, 28-70/2.8 and 80-200/2.8) but I use them only on rare occasions when I know I'm going to be in adverse environmental conditions for an extended period. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
Do you also use film compartment air fresheners with New Car Scent (TM)? 2009/9/9 Desjardins, Steve : > I spray all of my lenses with Rhino Coat and then take pictures with a P&S. > > -Original Message- > From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of Mark > Roberts > Sent: Wednesday, September 09, 2009 9:10 AM > To: Pentax-Discuss Mail List > Subject: Re: Front Element Protection (was: Dropped K200D) > > eckinator wrote: > >>Is there such a thing as a final verdict on UV vs Skylight vs >>'Protection' (whatever those are - do they block overprotective rays?) >>Filters? >>I need to buy one for my 16-50 seeing the time I spend in sandboxes >>with my camera these days... a blower wont do the trick for me all the >>time. > > I almost never use protective filters on any of my lenses. I have > Pentax SMC filters for my larger lenses (16-50/2.8, 28-70/2.8 and > 80-200/2.8) but I use them only on rare occasions when I know I'm > going to be in adverse environmental conditions for an extended > period. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
eckinator wrote on Wed, 09 Sep 2009 05:57:25 -0700: (snip) I want to buy a good one because of IQ, but my priority is on ease of cleaning... dang, I should have said that right away. Recommendations anyone? In my experience, the B+W MRC filters are a lot easier to clean than the Hoya HMC filters. hey are a little mare expensive, however. Regards, Jim -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
I haven't seen Pentax filters in years. With the Hoya acquisition, I doubt if I'll see them again. Hoya itself makes a full range of filters. When I was last buying them, the top of their line was Pro 1 Digital. During my research, I disccovered that these were the same as the Kenko Pro 1 Digital filters. The Kenko brand were available from Asia at about half the B&H price of the Hoya versions. Larry in Dallas -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
There is such a nice thing as Marumi protective filter. It is a piece of high quality multicoated glass. Cheaper than uv. --Sasha On Wed, Sep 9, 2009 at 8:25 AM, Larry Levy wrote: > I haven't seen Pentax filters in years. With the Hoya acquisition, I doubt > if I'll see them again. > > Hoya itself makes a full range of filters. When I was last buying them, the > top of their line was Pro 1 Digital. During my research, I disccovered that > these were the same as the Kenko Pro 1 Digital filters. The Kenko brand were > available from Asia at about half the B&H price of the Hoya versions. > > Larry in Dallas > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Front Element Protection (was: Dropped K200D)
The verdict is that you should never add an additional element, to your already complex highly engendered lenses unless absolutely necessary. That said any glass will help subtract some UV. (I don't remember how much, or what wavelength). Use a mulitcoated filter, and one that doesn't add any color cast unless you want a special effect, so a multicoated, plain glass filter is best. eckinator wrote: Is there such a thing as a final verdict on UV vs Skylight vs 'Protection' (whatever those are - do they block overprotective rays?) Filters? I need to buy one for my 16-50 seeing the time I spend in sandboxes with my camera these days... a blower wont do the trick for me all the time. Thanks Ecke 2009/9/9 Larry Levy : I come from the capital K Klutz school of carefulness. Starting with the 10D, I've been putting Giottos Aegis screens on the LCDs. It's a lot cheaper to replace if (when) something goes wrong. I'm also one of those who typically puts a UV filter in front of the lens. When I dropped my camera bag in an airport, the only damage was some cross-threading in the lens (which Eric fixed for me) and the replacement of the filter (which had given itself up to save the lens). Larry in Dallas -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- The free man owns himself. He can damage himself with either eating or drinking; he can ruin himself with gambling. If he does he is certainly a damn fool, and he might possibly be a damned soul; but if he may not, he is not a free man any more than a dog. --G. K. Chesterton -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
RE: Front Element Protection (was: Dropped K200D)
From: eckinator Is there such a thing as a final verdict on UV vs Skylight vs 'Protection' (whatever those are - do they block overprotective rays?) Filters? I need to buy one for my 16-50 seeing the time I spend in sandboxes with my camera these days... a blower wont do the trick for me all the time. Thanks Ecke I don't think it matters all that much what type of filter you use. The idea is if you're going to be out in the wilds with your camera, you scratch up a $50 filter instead of a $700 lens. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
