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03-01-2016, 10:36 PM   #1
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FA 20-35 f/4 in preparation of my K-1

I just picked up an FA 20-35 f/4. Hopefully a good match for the K-1.

03-02-2016, 01:13 AM   #2
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A good move....

....It's a super lens on APS-C, so let's hope the corners are good on the K-1 !

I've got an FA 20-35 and an FA 24-90 ready for when I can afford/justify the K-1, I'm expecting both to be great performers
03-02-2016, 01:45 AM   #3
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QuoteOriginally posted by LennyBloke Quote
A good move....

....It's a super lens on APS-C, so let's hope the corners are good on the K-1 !

I've got an FA 20-35 and an FA 24-90 ready for when I can afford/justify the K-1, I'm expecting both to be great performers
Me too, but more hoping than expecting. Lens design and coatings have come a long way in the digital era. I expect these film era lenses will show their age. However, they will have to do for now.
03-02-2016, 02:08 AM   #4
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FA 20-35 on K1

It's a lovely little lens - I have owned one since 1999, and it was a great performer on film, and brilliant on my istDS and K10. But it struggles on the K5ii, and I would expect it to be horribly overstretched on a full-frame 36mp sensor.

03-02-2016, 04:06 AM   #5
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I decided to take the risk and purchase a FAJ18-35 lens. I hope it will be acceptable wide zoom for my new K1.
03-02-2016, 04:25 AM   #6
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QuoteOriginally posted by pakhead Quote
It's a lovely little lens - I have owned one since 1999, and it was a great performer on film, and brilliant on my istDS and K10. But it struggles on the K5ii, and I would expect it to be horribly overstretched on a full-frame 36mp sensor.
Why would it be overstretched?
03-02-2016, 05:03 AM   #7
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Had one way back, soon after it was introduced, but let it go with most of my film-era equipment, for a song*. It was/is a good lens, but as I recall had quite a bit of barrel distortion at 20mm, more than a modern APS-C WA zoom with equivalent coverage. One small annoyance: the little door on the lens hood that gives finger-access to rotate a polarizer became loose after being popped on/off a few times, and dropped off somewhere unnoticed. At least back them, I could not locate a source for a replacement (problem only for some verticals).

* FF lenses kept: 90mm "Bokina;" 200mm SMCA ED Macro; 400mm f4 Tamron beast; 24~105 and 70~300 Tamron zooms (because I was offered something like
$75 for both - the 70~300 is pretty decent); also 1.4XL and 2XL converters, which work well with both the 200 macro and 400 Tamron.
03-02-2016, 05:31 AM   #8
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Don't worry too much.
Should be good most of the way stopped down.
At the worst it will only be softer edges, which are often :
1. Not a big deal as its not where the area of interest is in a pict
2. Cropped off with an 5x7 aspect ratio
3. Cropped off with a distortion correction
4. not matter at all since its not noticeable in A4 prints.

Distortion, can be corrected in PP.
In fact, many modern (often mirrorless ) wides are worse and rely on such software corrections totally.

Coatings not good is a myth.
Here's 'proof'
https://www.pentaxforums.com/forums/122-lens-clubs/247282-pentax-lenses-ff-club.html

03-02-2016, 09:53 AM   #9
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Folks thinking ahead to a K-1 should not overlook the Tokina AF (235) 20-35mm f.3.5-4.5 Version II. When you look this up in the lens database, take note that there are two separate listings for this same lens with user reviews, in addition to a third entry for Version I. Ken Rockwell has one of his more thorough reviews up on this one (just ignor the simplistic and typical Rockwell-isms), which includes an interesting, if somewhat dubious, application of Aristotelian logic. The AT-X Pro f.2.8 version with this FL range is heavier and considerably more bulky (I have seen the word "beast" used to describe it), and I could not find compelling reason online to believe it offered any overall IQ advantage worth the weight over the more user friendly version (K.R. has his particular biases and thinks it's not as sharp as the smaller option, FWIW; I went through all the Dyxum reviews, et.al., as well); but the f.2.8 does have better inherent correction for distortion, if architectural photography is a big thing for you. I ended up concluding that this slower zoom and the Tamron SP 20-40mm 2.8-3.5 represented the best *practical* options among vintage *third party* zooms in this range; the Tamron -- the best of the whole bunch, my own provisional conclusion -- was unfortunately never manufactured in Pentax mount. I also need to qualify my remarks to say that my priority at the time was finding a solution on crop sensor that might fill the FL gap between a DA 15mm and the FA 31mm, especially for landscapes and such (stopped down). When I am back on my feet, I will be doing some comparisons. I have two of each, the Tokina and the Tamron, purchased at opportune moments over the past few years: testing a single copy of a consumer level zoom, or any wide-mid zoom, for that matter, can only yield a doubtful conclusion... though anyone might get lucky. In any case, re: a Pentax FF, I had faith!

BTW, one of my favorite photos ever among database reviews, a pretty spectacular looking execution of a cityscape, is posted among reviews for the big AT-X Pro. Check it out.

Last edited by Kayaker-J; 03-03-2016 at 11:21 AM.
03-02-2016, 10:59 AM   #10
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I found a new one (FA 20-35) last year. The other option was FA20mm. I went with the zoom, after some research here and there.
The colors it produces are really nice. and the construction wise I like it. polymer but light and feels good in hand. also at -10 or so it feel like metal!
FF or not the zoom range is great, for video in particular.
03-02-2016, 03:51 PM   #11
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I have an FA 20-35/4 and it rocks on my K-01. Corners might be a bit of an issue though.


It features the ghostless coating, same as the Limiteds and some * lenses, so I don't think it will be too much of an issue.
03-02-2016, 04:08 PM   #12
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I will want to be comparing notes with those who have an FA 20-35 on the FF as I went for the FA 20 instead. I have a feeling both will find it hard to perform well at the wide end, especially at the larger apertures.
I would suppose that's where the new DFA lenses come in, like the 15-30...
03-02-2016, 05:54 PM   #13
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QuoteOriginally posted by elho_cid Quote
I decided to take the risk and purchase a FAJ18-35 lens. I hope it will be acceptable wide zoom for my new K1.

I've got a 20-35 on the way, but I did try a couple of shots yesterday on my A7 at a shopping centre with the old FAJ18-35.


It's not a well-known or loved one by the Pentax community, but you know what? "Acceptable" may be the right word for it!


Slight cropping:



03-02-2016, 06:17 PM   #14
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I have also bought a FA20-35 recently (it arrived on 1st March), and I'm in the process of using it as my "Single In Challenge" lens for March, with occasional comparative shots when appropriate with either DA21, FA*24, F28, FA31 or HD35, and maybe the DA*16-50.

For those interested, the album is HERE. If you want anything in particular investigated and compared against a quality prime or modern zoom, let me know
03-02-2016, 08:12 PM   #15
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Seems like the FA 20-35 has a resurgence in interest. I got one about a month ago. Hoping it will serve as my FF ultra wide.
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