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Modern Classic SLRs Series :
Pentax LX - Message Board/Guestbook

Industry wide indications and ceasing film body development by Pentax altogether in early 2003 more than suggest the manual focus Pentax LX will not be having an upgrade (except, perhaps for very rare Limited Edition Models hand assembled by special commission by the new HoyaPentax Corporation). In 2008 Pentax became a division of Hoya Corporation, which had together with Pentax released jointly developed professional grade optics (since 2005); Pentax has shifted its attention to development of auto focus Digital SLRs having build qualities constructed for the long run--now with weather seals--like the LX. You may use this site for common support and sharing of mutual users knowledge or experiences among yourselves. You may also use this message board as a guestbook for the advanced users Pentax SLR cameras from the LX forward, including many such auto focus film cameras, and Pentax digital SLR cameras. We keep the site going too for the WORD SEARCH FEATURE found here as to its magnificent K mount system user archives: as have been shared here for many years. Have an inquiry related to Pentax gear? First try KEYING IN YOUR KEY WORD(S) for a preexisting archived response on your subject of inquiry from this LX site. If your inquiry or sharing is from advanced users K10D, K20D, or K200D SLR needs, proceed on to t NEW PENTAX ADVANCED USERS K10D, K20D SLR site.

This LX site was specifically created for the great Pentax LX SLR camera model(s), and now has incorporated increased opportunity for an expanded interchange with the introductions of the Pentax K10D, K20D, and K200D SLRs to include advanced and professional digital user models. Interchange is encouraged with the intention to continue as a forum for advanced system users of past K-mount film based SLR systems and the mentioned Pentax DSLRs. With decreasing forum traffic here, and enthusiasts moving on with SLR digital imaging products futures, we hope the continued convenience of this site and its past Pentax advanced LX users data archives--provided by the database KEY WORD SEARCH FEATURE found here--can be very useful to you. Most past site user techniques, systems components, and lenses of Pentax advanced applications--as have been past examined by users on this site--are still of use regarding the newest Pentax SLRs. Please don't mail us with other than constructive suggestions or to rectify mistakes found within this site, thank you. Since this is a non-profitable resource site, maintained by professional and advanced system users, the developer of this site reserves the rights to censor or delete any inappropriate, unrelated, misleading or excessively hostile messages posted herein. If your intention is to dispose of your Pentax cameras or its accompanying accessories and/or you are looking for a used model, or even for any of its system components: please use a separate section with a higher volume of related traffic for these purposes: on the
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1. From : Mico (micolx@netscape.net)
Url : http://
Date : 06:57 AM Tuesday 08 June, 2004

Ian, I think your LX needs focus adjusting. If your 50mm lens is fine on the other LX body, this is quite enough as a prove. I would not count ANY zoom lens in this test. Yes, it is not miles but with 300mm or so it could be a one meter error, depending on distance. Not to mention macro. So, I will try to find my old posting on the same issue and if not I`ll write a new one...Hmmm, maybe I should keep those instructions in some more convenient place. M.


2. From : AB (handmaid@fsmail.net)
Url : http://
Date : 03:51 PM Monday 07 June, 2004

p.s. Ian, I assume you've swapped focusing screens, just a thought, you never know. AB


3. From : AB (handmaid@fsmail.net)
Url : http://
Date : 03:49 PM Monday 07 June, 2004

Ian, I'd be inclined to send the body back. Mico or somebody gave instructions about this and it involves loosening the two little screws under the rest (finding a screw driver and technique to do this accurately is a task in itself) without slipping - one slip and catastrophe - probably best to lock the shutter open and take the camera back off. You then need to adjust the height of the rest but this will be a mere fraction of a millimetre. I believe you then fix a ground glass screen to the film plane (lens back on) and focus on something on the screen, then compare focus through the viewfinder, if it's out, round you go again, and again, and again... Send it back I reckon. Mico? AB


4. From : Ian (ian@ity.co.uk)
Url : http://
Date : 08:19 AM Monday 07 June, 2004

Mico, I've tried all three of my available lenses. The LX is not reaching infinity (hills on skyline >3000 feet, micro-prism). It's slightly noticeable with the M24-35 zoom, and precisely noticeable with the A50mm f1.7. I seem to be able to go a fraction past infinity with the A35-105 at 105. I find that objects at 40 feet (approx) are in focus at infinity (50mm). The 24-35 and 50 are perfect on my other (LX) body, infinity is reached, period. I have also noticed that there is a differential between the top/bottom of the micro-prism, which to my (warped!?) sense of logic indicates the mirror is indeed out. The image is more OoF in the top half, infinity is very very nearly in focus in the bottom half (almost negligible). We are not talking about miles here, but it will irritate me, and I'm concerned about close-up, wide-open work. I should of course just send the body back, but I really don't need that inconvenience right now. Instructions, if you would please, Maestro! - Ian.


5. From : Ian (ian@ity.co.uk)
Url : http://
Date : 06:50 AM Saturday 05 June, 2004

Mico, excellent advise, many thanks. I'll be testing all lenses and cross referencing them with my other LX body in daylight tomorrow. - Ian.


6. From : Mico (micolx@netscape.net)
Url : http://
Date : 05:42 AM Saturday 05 June, 2004

Ian, is yor focus issue before or after designated infinity mark? If you can not focus at infinity, mirror rest is too low, if you are passing infinity point,it is too high. But, I would try some other prime lenses (from 50mm up to 200mm) maybe your A50/1.7 is not spot-on. See that before final conclusion. M.


7. From : Ian (ian@ity.co.uk)
Url : http://
Date : 09:49 AM Friday 04 June, 2004

I'm back in the land of the uncut grass (lawns, not weed). I feel like I have some great shots from Daphne (AL). I can't wait to get the E100G/GX's and Tri-X processed. Fingers crossed. Picked up my other LX from repair after getting off the plane (one of three planes, yawn!). Great job performed by PJ's (John). The new wind (clutch) assembly is bang-on, and nice feeling too. One slight issue, the new mirror rest is lovely, but is showing OoF at infinity with my 50mm A-Series f1.7. Does anyone have the de-facto adjustment sequence for adjusting the two-screw affair on the mirror stop? (Mico?). - Ian.


8. From : Dan (dgrimes@unlv.nevada.edu)
Url : http://
Date : 12:36 AM Friday 04 June, 2004

Thank you, Mico. You confirmed my suspicions.


9. From : Mico (micolx@netscape.net)
Url : http://
Date : 06:40 PM Thursday 03 June, 2004

Dan, 28-135/4 IS quite soft wide open at 28mm, and there is nothing you or Pentax service can do about that. Also, some focus shift while zoming back and fort is normal for such wide zoom range. The amount of focus "error" can vary from sample to sample, but once factory assembled each complex lens is a unique combination. M.


10. From : Dan (dgrimes@unlv.nevada.edu)
Url : http://
Date : 12:13 AM Thursday 03 June, 2004

There is this Pentax zoom lens that I absolutely love: 28-135 f4. However, the focus on it is not perfect. When one zooms in, focuses, and then zooms back out, the focus is off a little. So I guess the back focus is off a little. Is this normal for this lens, or should I have it adjusted? Also, at wide open apetures, the picture is quite soft on the edges at 28mm. Is this also normal or do I have a lens that needs some tweeking? The picture is great at medium and long focal lengths with moderate apetures. Also, the lens has a lot of contrast. Good, I suppose, but too much with a flash. Anyone know of a good lens tech in the US?


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Maintainers for Pentax LX Series SLR Camera Models Message Board:
Tony Davies-Patrick (Globetrotter) (globetrotterworld@hotmail.com); Mico Smiljanic (micolx@netscape.net);
Jay Hart (ibcom@onebox.com); Philip Ashman (genesisphil@hotmail.com)

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