Re: *ist will work with K and M lenses
Lawrence Kwan [EMAIL PROTECTED] wrote: I just can't see where all the big fuss is coming from! Just check the specs for ZX-60, ZX-5n and then *ist ZX-60: Usable Lenses - Pentax KAF2- and KAF-mount lenses. ZX-5n: Usable Lenses - Pentax KAF2-, KAF-, KA- and K-mount lenses. *ist: Usable lenses - Pentax KAF2-(power zoom not available), KAF-, KA- and K-mount lenses To me, it's very clear. Usable Lenses = Full Support Or at least as much as support as ZX-5n, ZX-L. Listen, Lawrence, if you're going to insist on being so rational about it you're going to have to leave this list soon! ;-) -- Mark Roberts Photography and writing www.robertstech.com
Re: *ist will work with K and M lenses
On Thu, 20 Feb 2003, Peter Alling wrote: Interesting, where is this from? All specs directly from Pentax USA website. This link is for *ist: http://www.pentax.com/news/news_display.cfm?pressid=149 At 08:35 AM 2/20/2003 -0500, you wrote: Lawrence Kwan [EMAIL PROTECTED] wrote: I just can't see where all the big fuss is coming from! Just check the specs for ZX-60, ZX-5n and then *ist ZX-60: Usable Lenses - Pentax KAF2- and KAF-mount lenses. ZX-5n: Usable Lenses - Pentax KAF2-, KAF-, KA- and K-mount lenses. *ist: Usable lenses - Pentax KAF2-(power zoom not available), KAF-, KA- and K-mount lenses To me, it's very clear. Usable Lenses = Full Support Or at least as much as support as ZX-5n, ZX-L. Listen, Lawrence, if you're going to insist on being so rational about it you're going to have to leave this list soon! ;-) -- --Lawrence Kwan--SMS Info Service/Ringtone Convertor--PGP:finger/www-- [EMAIL PROTECTED] http://www.vex.net/~lawrence/ -Key ID:0x6D23F3C4--
Re: *ist will work with K and M lenses
- Original Message - From: Herb Chong [EMAIL PROTECTED] Subject: Re: *ist will work with K and M lenses that's to prevent the unknowing from taking a picture with a lens that won't auto-focus. Unless, of course, it is because of some problems of compatibility with the new matrix... Equally important questoin is, IMHO, whether the *Ist accepts the m42-via-the-K-mount-adapter lenses or not. Regards Artur --r-e-k-l-a-m-a- Tanie bilety lotnicze! http://samoloty.onet.pl
Re: *ist will work with K and M lenses
Peter wrote: You miss the point. If that is necessary then K/M lenses are not supported. I think he actually hits the point. The custom function that activate/deactivates shutter release when the lens is not set at A is necessary *because* the the K will lenses work. It is to prevent an error message when you set the camera to one program mode and the lens not to the A position. Alexander At 11:27 PM 2/18/2003 -0500, you wrote: On Tue, 18 Feb 2003, Peter Alling wrote: It seems that the Pentax USA site implies K lenses will work, but require a Pentax function be invoked to allow shutter release. The question I ask is why is that necessary? Could it be that it will not meter correctly when lenses are not set to the A position? If the lens is not at the A position, the program mode would not work; since it cannot control the aperture. You can only use it in aperture priority mode or manual. __ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com
Re: *ist will work with K and M lenses
Peter Alling wrote: I didn't say they weren't supported, I don't know, however the signs I see point to them not being fully supported. None of the other possible reasons for a special warning with non supported lenses or the requirement to use a special Pentax function to enable shutter release without having a lens set to the A position makes nearly as much sense. The more I think about it the more it makes sense that K/M lenses either won't meter properly, or won't stop down to shooting aperture or both. I don't like my conclusion and I hope I'm wrong but I'm a realist. (When someone from the list actually holds one of these cameras in their hands and reports back we'll know). Honestly I'd be VERY suprised if they went to the trouble of getting -A lenses to work on the camera without taking the tiny extra step to have K and M lenses work properly. All they really need is feedback from the aperture ring and the ability to simply stop the lens all the way down on shutter release. Why be so pessimistic about it? -Mat
Re: *ist will work with K and M lenses
Just the getting the A lenses to work requires extra software, getting K/M lenses to work requires extra hardware. At 01:03 PM 2/19/2003 -0500, you wrote: Peter Alling wrote: I didn't say they weren't supported, I don't know, however the signs I see point to them not being fully supported. None of the other possible reasons for a special warning with non supported lenses or the requirement to use a special Pentax function to enable shutter release without having a lens set to the A position makes nearly as much sense. The more I think about it the more it makes sense that K/M lenses either won't meter properly, or won't stop down to shooting aperture or both. I don't like my conclusion and I hope I'm wrong but I'm a realist. (When someone from the list actually holds one of these cameras in their hands and reports back we'll know). Honestly I'd be VERY suprised if they went to the trouble of getting -A lenses to work on the camera without taking the tiny extra step to have K and M lenses work properly. All they really need is feedback from the aperture ring and the ability to simply stop the lens all the way down on shutter release. Why be so pessimistic about it? -Mat Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read. --Groucho Marx
Re: *ist will work with K and M lenses
You are right the press release does not explicitly say that the light meter will work with the K and M lenses. Neither does it explicitly say it does not work. My guess is simply: When you use a FA, F or A lens set to the A position, you will deactivate the shutter release when the lens is not set at A. This avoids malfunctions or wrongly exposed pictures when the camera is set to program mode but the lens is not to A. This has been critisised in many tests of the MZ/ZX-6/7. When you use a K or M lens you will activate shutter release when the lens is not set at A. Just that simple. I don't know if this is true (or overoptimistic) but is seems common sense to me. Besides they also state the soft lenses in their press release. They have no A position. Enjoy, Alexander Date: Wed, 19 Feb 2003 12:02:10 -0500 From: Peter Alling [EMAIL PROTECTED] You're assuming something that isn't in the literature I've read so far, in fact it seems to me artfully crafted to avoid just that point. The actual support for K/M lenses could be anything from full support to not stopping down the lens to giving incorrect meter readings since there is no follower cam. At 01:41 AM 2/19/2003 -0800, you wrote: Peter wrote: You miss the point. If that is necessary then K/M lenses are not supported. I think he actually hits the point. The custom function that activate/deactivates shutter release when the lens is not set at A is necessary *because* the the K will lenses work. It is to prevent an error message when you set the camera to one program mode and the lens not to the A position. Alexander At 11:27 PM 2/18/2003 -0500, you wrote: On Tue, 18 Feb 2003, Peter Alling wrote: It seems that the Pentax USA site implies K lenses will work, but require a Pentax function be invoked to allow shutter release. The question I ask is why is that necessary? Could it be that it will not meter correctly when lenses are not set to the A position? If the lens is not at the A position, the program mode would not work; since it cannot control the aperture. You can only use it in aperture priority mode or manual. __ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com
Re: *ist will work with K and M lenses
Mat Maessen [EMAIL PROTECTED] wrote: Honestly I'd be VERY suprised if they went to the trouble of getting -A lenses to work on the camera without taking the tiny extra step to have K and M lenses work properly. All they really need is feedback from the aperture ring and the ability to simply stop the lens all the way down on shutter release. Why be so pessimistic about it? I have it from a source at Pentax that the camera *does* support K lenses. -- Mark Roberts Photography and writing www.robertstech.com
Re: *ist will work with K and M lenses (and S ?)
Mat Maessen [EMAIL PROTECTED] wrote: Honestly I'd be VERY suprised if they went to the trouble of getting -A lenses to work on the camera without taking the tiny extra step to have K and M lenses work properly. All they really need is feedback from the aperture ring and the ability to simply stop the lens all the way down on shutter release. Why be so pessimistic about it? Mark Roberts : I have it from a source at Pentax that the camera *does* support K lenses. And screw mount lenses? Andre --
Re: *ist will work with K and M lenses
But it's a piece of hardware that's already a part of current lens mounts, and probably hasn't changed one little bit in 20 years of Pentax cameras. Engineering is already done, and the space constraints of that area of the cameras are set by other factors (size of the mirror, lens mount to film distance). All of my Pentax cameras have had VERY similar lens mounting arrangements. -Mat Peter Alling wrote: Just the getting the A lenses to work requires extra software, getting K/M lenses to work requires extra hardware.
Re: *ist will work with K and M lenses
Hi Mark, Mark Roberts wrote: I have it from a source at Pentax that the camera *does* support K lenses. If you turn off that PF 17, it supports them as much as the MZ-30 or MZ-60 -- no support at all. If you turn on the function, it supports them as much as the MZ-50 --- the shutter operates, the light meter not. Cheers, Boz
Re: *ist will work with K and M lenses
Not necessarily, you can support all of the features of A, F and FA lenses without a stop down follower cam. You need one for the K/M lenses. This camera will support stop down metering according to the literature. That's not the same as full support it may support K/M lenses in the same manor as ST and SMCT lenses. I'm waiting for a report from some one who actually handles one. At 02:10 PM 2/19/2003 -0500, you wrote: But it's a piece of hardware that's already a part of current lens mounts, and probably hasn't changed one little bit in 20 years of Pentax cameras. Engineering is already done, and the space constraints of that area of the cameras are set by other factors (size of the mirror, lens mount to film distance). All of my Pentax cameras have had VERY similar lens mounting arrangements. -Mat Peter Alling wrote: Just the getting the A lenses to work requires extra software, getting K/M lenses to work requires extra hardware. Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read. --Groucho Marx
Re: *ist will work with K and M lenses
Bojidar Dimitrov schrieb: If you turn off that PF 17, it supports them as much as the MZ-30 or MZ-60 -- no support at all. If you turn on the function, it supports them as much as the MZ-5 --- the shutter operates, the light meter not. How do you know? Arnold
Re: *ist will work with K and M lenses
Hi Arnold, Arnold Stark wrote: Bojidar Dimitrov schrieb: If you turn off that PF 17, it supports them as much as the MZ-30 or MZ-60 -- no support at all. If you turn on the function, it supports them as much as the MZ-5 --- the shutter operates, the light meter not. How do you know? According to dpreview.com: Usable Lenses: PENTAX KAF2- (power zoom not available) and KAF- mount lenses PENTAX KA mount lenses (AF available with optional AF adapter) When the aperture ring is set at other than A position, release lock or unlock selectable by Custom function No.17 OK, let's read again s-l-o-w-l-y: When the aperture ring is set at other than A position, release lock means to me like the MZ-30/60. or unlock selectable by Custom function No.17 means to me like the MZ-50. Maybe I'm overly pessimistic, but then again, I just bought a Canon EOS 30, same as the Elan 7e.:-) Cheers, Boz
*ist will work with K and M lenses
The press release for the *ist SPECIFICALLY mentions that it will work with Pentax's soft focus lenses, all of which use stop-down metering and have no A setting. -- Mark Roberts Photography and writing www.robertstech.com
Re: *ist will work with K and M lenses
On Tue, 18 Feb 2003, Peter Alling wrote: It seems that the Pentax USA site implies K lenses will work, but require a Pentax function be invoked to allow shutter release. The question I ask is why is that necessary? Could it be that it will not meter correctly when lenses are not set to the A position? If the lens is not at the A position, the program mode would not work; since it cannot control the aperture. You can only use it in aperture priority mode or manual. -- --Lawrence Kwan--SMS Info Service/Ringtone Convertor--PGP:finger/www-- [EMAIL PROTECTED] http://www.vex.net/~lawrence/ -Key ID:0x6D23F3C4--
Re: *ist will work with K and M lenses
You miss the point. If that is necessary then K/M lenses are not supported. At 11:27 PM 2/18/2003 -0500, you wrote: On Tue, 18 Feb 2003, Peter Alling wrote: It seems that the Pentax USA site implies K lenses will work, but require a Pentax function be invoked to allow shutter release. The question I ask is why is that necessary? Could it be that it will not meter correctly when lenses are not set to the A position? If the lens is not at the A position, the program mode would not work; since it cannot control the aperture. You can only use it in aperture priority mode or manual. -- --Lawrence Kwan--SMS Info Service/Ringtone Convertor--PGP:finger/www-- [EMAIL PROTECTED] http://www.vex.net/~lawrence/ -Key ID:0x6D23F3C4-- Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read. --Groucho Marx
