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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 : AB (
Url : http://
Date : 10:39 AM Thursday 04 August, 2005

Jay, I think you maybe made things worse!X

2. From : Jay (
Url : http://
Date : 04:08 AM Thursday 04 August, 2005

Topo correction on the below posting: 28-70 f2.8 FA is indicated, not A series but FA series. --J

3. From : Jay (
Url : http://
Date : 12:19 AM Wednesday 03 August, 2005

Ian, and all, I mentioned the 28-135 A as a design failure in accomplishing its aims, but wish to hone the response on the 28-70 f2.8 A. Within the limits of extreme WA zoom design it certainly distorts considerably less than the Sigma, and outresolves it too without noticeable flare. It is not quite as robust as the Sigma in construction. However, what was written about the limits of such WA wide aperture zoom designs also applies. Frankly, having used this range and others, I feel that without at least 80mm on the telephoto side, it is not quite a portrait lens too. And this says something about what is achievable at the wide aperture in zoom designs. There are some better 20 to 35 to 40 zooms which have proven useful and achieve their design aims. --Jay

4. From : mary wright (
Url : http://
Date : 09:05 PM Monday 01 August, 2005

i have a pentax IQZ900 when i take a picture the drive does not work and E7 appears on LCD panel, help the camera is almost twenty years old

5. From : Jay (
Url : http://
Date : 11:07 PM Sunday 31 July, 2005

Ian and all, Although lens designs have made wonderful progress toward zoom offerings of useful range, the tradeoffs involved in wide angle zooms have always limited their perfectability. The wider the aperture, over a given wide angle range, the worse the adjustment difficulties to emulate primes in varied focal lengths. Telephoto zooms have fewer design challenges, though good ones certainly have some. And, of course, the more one acquires in handsome gear the more one seems to desire more. This is why folks learn to comtemplate, relate, and meditate on and about reality and truth outside of the limits of material reality, in addition to enjoying the wonders of material technology and engineering. Like us, lens designs are passing through the material world, destined for a temporary utility in the boundaries and bonds of a useful lifespan. This is so regarding a wide angle to moderate telephoto and the realities of the arrangement and movement of glass elements within a given range of change. The 3.5 moderate WA to portrait A series lens has fewer design challenges to reach acceptable results than the wider pupiled 28-70 mentioned. The earlier Pentax 28-portrait monster A series produced at the same time as the 35-105, though bigger and more complex, was unable to achieve what the other more moderate range lens offered(s). They both were manufactured with excellence, yet the bigger and more complex lens range could not change the laws of physics and optics.

One would find less flare, but similar distortion even with the expensive Pentax wide aperture comparative optic in the range Ian discussed. I owned the exact same lens formula Sigma up to six months ago or so, not the DF model, but the one just prior (with exactly the same glass elements, made with the same formula, but withot the push-pull focus ring). It flared when aimed at a light source, distorted toward its peripheries, had barrel related distortions at both ends of the range, and its range was too limited to justify its presence and cost for me, so I never quite accilmated to its presence among the brush palette choices of the painter kit. Off it went to Ebay, and yet another soul without the choices of glass accumulated here found a useful new lightgathering companion. So be it.

With the specially bonded and formulated hybrid lens elements found in newer wide aperture WA zooms post modern optical formulas have been advanced for acceptance in the narketplace; however, at the wide angle ends of zoom ranges, these will have noticeable distortion, flare, and color problems of optical design materials and cost limits (for publication purposes only resolved by stopping these down for dealing with the challenges to the rendering of photography involved).

My now old F series 28-80 (same as the earlier A series) does better than the lens of discussion, for it is not attempting to be an f2.8. Extreme physics laws tradeoffs will continue at this end of lens possibilities, though limiting the circle of confusion to a smaller imaging window than that of 35mm film imaging helps (as with the A sized digital sensor camera imaging window chips, the results will have easier correction viability than with 35mm film windows). It used to be the stuff of exotic glass alone which would make the concept of WA wide aperture zooms approachable. Now it is the newer helicals, hybrid glass elements, exotic glass types, and the newer user ignorance of primes which pulls the wool over the creative eye of the consuming imaging public. The only gain from the Pentax glass of the range Ian mentioned would be less flare. Photozone accurately tests both lenses mentioned with all factors weighed. Use the search feature of our LX Guestbook site to find my postings of the reference URL (and others of relevant use for the LX photographer).--Jay

6. From : Ian (
Url : http://
Date : 04:00 AM Saturday 30 July, 2005

Jay, many thanks for the wide angle lens info. I shall study it carefully.

On the subject of glass, a lens that I carry for general purpose use is the Sigma 28-70 f/2.8 EX DG, which I bought some months ago. I have been impressed with it's sharpness and it's ability to run wide-open in an emergency with surprisingly little vignetting.

However, on a recent roll of Tri-X (typical of me, yet more photos in a car park) I noticed that at the 70mm end the pincushion distortion was rather bad, more so than my Pentax A 35-105 f/3.5. By more so, I mean an unacceptable level. I don't tend to shoot at the 70mm end so I had not noticed it before. My question is, has anyone any experience with the Pentax FA* 28-70 f/2.8 ? Could I expect superior drawing (geometry) from one? I have not yet managed to locate a good review of one. Many thanks - Ian.

7. From : Philip Ashman (
Url : http://
Date : 06:52 PM Friday 29 July, 2005

Apart from having my trusty LX back, that will now hopefully provide enjoyment for years to come, as long as decent slide film remains available, I have now also taken the plunge and bought an *istDS body. This has been so I can properly enter and learn digital photography to run alongside my film work with the LX. I decided that this product was more than capable for the amateur work I undertake as a hobby, in that I rarely print above A4 and the price was within my limited budget. Although here in the NW of the UK the weather has been poor the last few days and not conducive to a real test, initial limited testing of this body with my existing lenses has been most encouraging. Images taken with telephotos, zooms, standard and wide angle, have all been very good, bright, crisp, good colour definition and saturation. I have needed to utilise the sharpening tool on PSP after downloading, but I understand this is pretty much the norm with digital images. The main thing is that all my existing lenses are compatible, and the Sigma 105mm f2.8 macro, Sigma 15mm & Sigma 400mm f5.6 APO EX all work perfectly (having the 'A' setting on the aperture ring). Obviously the focal length changes on each. With the macro it becomes a 152.5mm and for my nature work this is fine, especially with insects!! The 15mm is a slight issue as I use it for creative work and now becoming a 22.5mm it is not really a great deal of use to me on the digital body, but of course I am still using the LX anyway, so no problems. As for the 400mm, it now becomes a 600mm 5.6 on the digital body and that is great! I also tested it with my 1.4 & 1.7 converters and it works perfectly with them as well. What I have found is that using the macro lens I am now able to get down to f32, as the minimum ISO on the digital body is 200asa (I never used above 100asa on the LX) even at the greater distance from the subject when using my AF480C ringflash, that also works perfectly. A real bonus. The only other thing is that my 2 Pentax lenses (50mm 1.7 M and 28mm 2.8 M)will work (after making an alteration in the custom menu to allow use of the aperture ring) but having no 'A' setting on the ring means you have to use the DOF preview button to operate the meter and get no info in the viewfinder. Although a minor nuisance issue, I decided to stick to using these on my LX and have invested instead in a Sigma 20-40mm f2.8 ASPH EX (which retains f2.8 through the zoom range)to use with the digital body giving me an effective range of 30 - 60mm to cover normal wide angle and standard for my landscape work. It's a lovely lens with a filter size of 82mm and I also had to buy a new polorising filter for it (costly) for my landscape work. Obviously I can also use it as a new addition lens for my film work on the LX at 20 - 40mm. Best of both worlds.
I also have a Tamron 28 - 200mm f3.5/5.6 zoom that has the 'A' setting which becomes a 42- 300mm and will be useful, as I did not use it much on the LX prefeering, where possible to use prime lenses.

I've a lot still to get used to, but as I virtually always use aperture priority and it has also an AE lock and focus lock, plus the choice of 3 metering provisions, I will probably ignore all the other settings available that are mainly for the non serious photographer who allow the camera to make all the decisions.

Still of course a lot to play with and test yet, but with the 1GB SD card I bought and 2 sets of rechargeable batteries, I can fire away to my hearts content without worrying about the cost. The LX though will remain my main love and be used selectively (I'll carry both bodies in my bag) for those special pics!! LOL. Philip

8. From : Jay (
Url : http://
Date : 01:55 PM Friday 29 July, 2005

Ian and wa primes. I use both the zoom range mentioned, stopped down, for interiors, with mains flash power pack heads (with great results), and primes primarily for exteriors and landscapes. On primes: the 28 f 3.5 SMC K has a great reputation; as does the 24mm f 2 FA; the first run of the M series 28 f 2.8, before the second design (as was then carried into the A series); the A 28 f2, which has a floating element and a slightly different aperture rating than its M counterpart; the current FA 28mm f 2.8 AL is excellent; as is the current FA 35 mm f 2.8 FA AL (but is not as mechanically robust as earlier models). The 35mm f 2 M series and 2.8 F, A and M series are also of certain quality. The one silver 2000 series A WA lens too is excellent, but not to any advantage for the price, vs. the 28mms mentioned.

I do not trust the screw mounts prior to SMC, nor would I go out of my way to locate these. At the end of their series there were added levers which carried aperture information for the ES series cameras--precursors to the K mount series levers, excepting the push pin aperture open stop metering control not carried forward(making all screw mounts non-automatic lenses on K series cameras forward, therefore giving their use with such newer series cameras consderable metering and aperture adjustment delays for shooting). What I list has definite praise from various devotees. --Jay

9. From : Philip Ashman (
Url : http://
Date : 03:12 AM Friday 29 July, 2005

Thanks to Ian and Globetrotter for the expert advice. I have now run a cheap film through the LX at all different lighting conditions, on auto, to get exposures from 2000th to 4 secs and yep, you are quite right, it fired off the speeds exactly (as far as I could tell by ear)that the meter indicated. naturally I will wait till the film is developed, but I am now confident all is ok and can tell Robin when he returns from holiday. Cheers Phil PS no way can I afford the LX2000 (drat)...

Url :
Date : 02:15 AM Friday 29 July, 2005

A mint PENTAX LX 2000 kit with 50mm f1.2 lens is now on sale on Ebay: $4,000 dollars or £2,300 first bid...!

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