Correcting Uneven Illumination & Magenta Cast with NEX-7 & Fisheye Lens

Started 6 months ago | Discussions thread
Senior MemberPosts: 2,786Gear list
Re: Correcting Uneven Illumination & Magenta Cast with NEX-7 & Fisheye Lens
In reply to RustierOne, 6 months ago


Here's my attempt at correcting the color cast and vignetting. I had a lot of trouble creating the reference image for Adobe flat field (posted in the thread). It worked reasonably well, but I found the color cast varied with aperture.

I also had a go at de-fishing the lens. Here's my Lightroom profile for that. I think it works pretty well, and the resulting rectilinear images even after cropping are extremely wide.

Samyang 8mm de-fished

It's a very sharp lens, and perhaps it's worth the effort to correct out the issues on the NEX-7, but I prefer using it on 16M pixel bodies due to laziness. I really ought to test it out properly on the A7r (I did try it once in FF mode, hoping it would behave as a circular fisheye, but the built-in hood put a stop to that idea).

-- hide signature --

A rose by any other name is still a chicken.

 seachicken2000's gear list:seachicken2000's gear list
Sony Cyber-shot DSC-R1 Fujifilm FinePix S2 Pro Sony Alpha NEX-5 Sony Alpha NEX-7 Sony Alpha 7R +18 more
Reply   Reply with quote   Complain
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow