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05-14-2016, 01:29 AM - 1 Like   #16
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DA 35mm Ltd. on Pentax K-1

I think it is time to reactivate this thread.

I finally got my K-1 and put on my SMC DA 35mm limited Macro.

First the bad news, there is visible vignetting througout all apertures.
Now the good news, otherwise the performance is pretty good in my opinion and the vignetting can be handled in post processing.

First some white wall shots with different apertures to show the vignetting:

At 2.8:

At 5.6:

At 8.0:

Sky at 8.0:

Here a real world sample:

Here with corrected vignetting (took 5secs in Lightroom!):

Correcting the vignetting could be problematic with high ISO, because the noise in the shadow might increase.
I would not recommend to buy this lens specifically for FF mode on the K-1. But for people as me, who already have and love this lens, it is very useable!

Here are some full resolution pictures, standard sharpening and color noise reduction turned off in Lightroom (plain OOC):

05-14-2016, 08:13 AM   #17
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informative post - TFS
05-14-2016, 08:19 AM   #18
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Thanks for posting this. In the real world shot of the flowers and buildings it's not very noticeable even before correction in LR.
05-29-2016, 04:42 PM   #19
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by Hin Man, on Flickr

by Hin Man, on Flickr

And I have not done any vignette corrections for the following. All were shot in f/3.2 to f/4.0 rough settings, not wide open
on Sony A7.

by Hin Man, on Flickr

by Hin Man, on Flickr

The square crops may have hided the vignette

When I stopped down a bit more to f/5.6 or f/8.0, the vignette are more obvious. Still learning and trying but I am glad to have kept my DA 35, it is more useful than I expect on FF.

The center crop on this close up certainly helps

by Hin Man, on Flickr


Last edited by hinman; 05-29-2016 at 04:49 PM.

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