RiceHigh's Pentax Blog: How a DA* Prime would Perform on the Sony 36M FF Sensor?

Sunday, February 14, 2016

How a DA* Prime would Perform on the Sony 36M FF Sensor?

Here we go, my test picture and crops tell it all:

Picture shot at around f/8, 1/320s and ISO 100 with my A7R and my DA*55 F1.4 lens put on it. MF focusing was done with focus peaking at 10X on the image centre.

100% crop of the picture centre:

100% crop of the picture corner:

More test samples would follow! :-P

Comments (7)

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Brian B · 475 weeks ago

I have this lens, I love it! But my K-30 aperture motor failed :(
I`ve been considering a Sony full frame mirrorless. Can you tell me what adapter you use and if it can auto focus or auto adjust aperture?
Is there a manual aperture setting ?

1 reply · active 475 weeks ago

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RiceHigh 110p · 475 weeks ago

I use a Chinese Kipon DA to E adaptor, there is no AF nor auto aperture neither, both are set manually.

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Brian B · 475 weeks ago

I also found it to be sharpest (at the center) somewhere around the f4 mark. Try that pretty please :) :) :)
I enjoy your blog!

1 reply · active 475 weeks ago

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RiceHigh 110p · 475 weeks ago

Thanks, I'll keep updating. :-)

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ToetSFX · 474 weeks ago

Very, very useful information!
My question would be: will the results be better with new SONY 42 MP sensor?

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wuestlinger 24p · 474 weeks ago

In light of Pentax' information that some non-F lenses will still work on the FF sensor if stopped down, it might be good if you also took test pics at full aperture with all the lenses you try.

1 reply · active 474 weeks ago

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RiceHigh 110p · 474 weeks ago

There is some vignetting, but then all film glasses do.

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Sunday, February 14, 2016

How a DA* Prime would Perform on the Sony 36M FF Sensor?

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