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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: 369,684
07-15-2018, 08:24 AM   #511
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There's a JJC knock-off of the Pentax 55-300 hood for $5 on one of the big online retail sites. If I was cutting up a hood I'd go there instead of the factory *55 hood.

07-15-2018, 08:25 AM   #512
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You can buy a third party hood for the DA 55-300 for around $10. I found the petal style hood worked very well especially since the front of the DA*55 does not rotate.

Here is a DA 55-300 hood for $13 and it is not from China.
PH-RBG 58mm Lens Hood Black for Pentax SMCP-DA 55-300mm f/4-5.8 ED 700724037053 | eBay

Here is a petal style hood for $10 that would not need any modification.
amazon.com: 58MM Lens Hood Set (Tulip Flower + Collapsible Rubber Lens Hood): Camera & Photo?tag=pentaxforums-20&
09-06-2018, 03:19 PM   #513
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I have stickied your thread. I do note that a number of the links in the table are dead.
10-02-2018, 04:29 PM - 1 Like   #514
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Original Poster
Thanks for sticking the thread.
Note that I no longer regularly visit this forum so won't keep links alive if somebody moved the pages around ...

P.S.
This thread now lives for 10 years and never went havoc, or died. Probably never happened anywhere else in the internet

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