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DA lenses on Full Frame: Test Shots thread
Posted By: falconeye, 07-07-2008, 02:50 PM

Hi everybody,

I would like to open up a thread dedicated to one topic:

DA lens on Full Frame: a sticky test shots thread.

This thread shall be dedicated to test shots of a DA lens mounted to a full frame body (e.g., a film camera body). By test shot, I mean shots dedicated to evaluate the performance. Shots of ordinary subjects aren't suitable to this task, normally, and should not be posted. So, these are the rules:
  • K mount lens dedicated to the APS-C form factor is used.
  • Image is taken full frame 36mm x 24mm.
  • Lens hood was removed.
  • And ideally, no filter is mounted.
  • The aperture used is specified (note that film cameras don't record EXIF...).
  • Sample image shows the entire field of view.
  • Sample image(s) show(s) corner, border and center performance at 10MP-100% (multiple crops, or single not-resized image).
  • The subject is such that resolution and vignetting at the borders can be compared to the center.
The idea behind this thread is obvious: To compile enough data to assess the spectrum of available lenses for a forthcoming full frame DSLR in K mount.

#################################################

Table of results as obtained in this thread (updated regularly):
SMC Pentax-DA primes...
SMC Pentax-DA zooms...
Sigma K mount DC...
  • Sigma 18-200mm f/3.5-6.3 DC: -
  • Sigma 10-20mm f/4-5.6 DC: - (below 14mm, Gooshin)
  • ...
Tamron K mount Di-II...
  • ...
Overall rating scale:
+++: no significant difference between APS-C and FF corners
++: difference but usable at full aperture with a small loss in corner IQ only
+: usable staring at f/4~f/5.6, with no or a small loss in corner IQ only
o: usable at f/11 or with big loss in corner IQ only
-: not usable


Last edited by falconeye; 07-20-2016 at 02:57 AM. Reason: Result table updated
Views: 312,127
03-25-2014, 03:27 PM   #286
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Is anyone aware of a test of the DA 20-40mm Ltd. on FF?

03-26-2014, 01:28 AM - 1 Like   #287
arv
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Just for record - Pentax DA*55mm f1.4 test on SonyA7R.

A.
03-26-2014, 02:59 AM   #288
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QuoteOriginally posted by arv Quote
a good and fair review
03-26-2014, 11:22 AM   #289
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QuoteOriginally posted by arv Quote
Thanks for your review ... good to know, J

03-26-2014, 02:28 PM   #290
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QuoteOriginally posted by Jean Poitiers Quote
Thanks for your review ... good to know, J
Well, it is not mine review - I am just linking it. Eric is a member here, but I am not him

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04-14-2014, 04:48 AM - 3 Likes   #291
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DA 50 def works on full frame. Here are some shots from my zx-7 on tmax 100 film.





04-14-2014, 06:52 AM   #292
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Thanks

arv, GateCityRadio, thanks for the information provided / linked.
04-18-2014, 09:47 AM   #293
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QuoteOriginally posted by c-meier Quote
Is anyone aware of a test of the DA 20-40mm Ltd. on FF?
APS-C lens. It covers FF only at ~ 30-40 mm with vignetting


Last edited by ogl; 04-18-2014 at 11:25 AM.
04-18-2014, 09:54 AM   #294
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QuoteOriginally posted by c-meier Quote
Is anyone aware of a test of the DA 20-40mm Ltd. on FF?
QuoteOriginally posted by ogl Quote
APS-C lens
I'm sure he's aware of that and that's why he posted the question in the DA lens on Full Frame: Test Shots thread.

In answer to the question: https://www.pentaxforums.com/forums/122-lens-clubs/247859-da-limited-zoom-clu...ml#post2762148

Last edited by Parallax; 04-18-2014 at 10:02 AM.
04-18-2014, 10:02 AM   #295
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QuoteOriginally posted by Parallax Quote
I'm sure he's aware of that and that's why he posted the question in the DA lens on Full Frame: Test Shots thread.
Previous poster is correct. 20-40 does not work ff (only just covers aps-c)
04-18-2014, 11:20 AM   #296
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QuoteOriginally posted by Parallax Quote
I'm sure he's aware of that and that's why he posted the question in the DA lens on Full Frame: Test Shots thread.

In answer to the question: https://www.pentaxforums.com/forums/122-lens-clubs/247859-da-limited-zoom-clu...ml#post2762148
Could cover FF only at ~ 30-40 mm. But hard to say % of vignetting at 30-40 mm. It seems to me - it's APS-C lens.

Your samples say that it's not FF designed lens.

Last edited by ogl; 04-18-2014 at 11:32 AM.
04-18-2014, 11:58 AM   #297
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Most APS-C zooms cover the FF circle in at least a little bit of the focal range. Even the 18-55 does. The 16-45 covers FF from 22mm on (24 on some accounts).
04-18-2014, 12:16 PM   #298
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QuoteOriginally posted by ogl Quote
It seems to me - it's APS-C lens.
Yes, it seems that way to Pentax, too. That's why they call it a DA 20-40 and not an FA 20-40.
QuoteOriginally posted by ogl Quote
Your samples say that it's not FF designed lens.
First, they're not my samples, and yes, once again, everyone knows it's not a FF designated lens.
As I said, that's the point of this thread. to post TEST SHOTS of DA lenses on FF.
05-20-2014, 12:03 AM   #299
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I know this has been covered but here are my findings with the DA 15mm
05-20-2014, 02:07 AM   #300
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QuoteOriginally posted by Pablom Quote
I know this has been covered but here are my findings with the DA 15mm
Interesting. I did a quick attempt at cropping those images, and it seems like a slightly wider crop than APS-C (maybe 1.3-1.35) might be acceptable, at least for some images! I.e. it could be used like a 19 or 20 mm equivalent and not only a 23 mm.
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