35mm 1.8 OSS Test

Started Jan 18, 2013 | Discussions thread
Senior MemberPosts: 7,924Gear list
Re: New theory ... ?
In reply to blue_skies, Jan 19, 2013

blue_skies wrote:

I took 4 quick handheld shots, similar to Lee's setup, after I got home tonight.

Below is what I got. It can probably be improved upon further, but my results seems to confirm Lee's? But to a lesser degree?

I used LR to crop and convert to JPGs, using autoTone (hence variations in color rendering).

35mm @ f/1.8

35mm at f/2.8

50mm at f/1.8

50mm at f/2.8

I was playing with some other fast 35mm lenses (MF) and noticed two factors: minimum focus distance and angle of focus plane. Both factors can have an effect on the CA and the softening factor.

I took 4 more shots for comparison sake. First two are further away, and last two are closer in. To my surprise, the effect seems affected by distance? Or, to say this different - a minimum black outline has to be present for the lens to render properly, likely due to CA?

Maybe this test does NOT affect what we would see with a typical subject?

35mm at f/1.8 - further away

35mm at f/2.8 - further away

35mm at f/1.8 - closer in

35mm at f/2.8 - closer in

-- hide signature --


 blue_skies's gear list:blue_skies's gear list
Canon PowerShot S95 Sony Alpha NEX-7 Sony Alpha NEX-6 Sony Alpha 7 Sony a6000 +36 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow