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 p.8 #1 · Sigma 135 1.8 thoughts? AF functionality | |
Not sure how informative this will be, but I did a craptastic mini-comparison between the Sigma and Samyang, indoors, in ambient lighting.
Not very photographically interesting, so I didn't think it warranted a separate thread, but you can see that both lenses are very similar, with the Sigma being a bit sharper to my eyes. Given the very favorable reviews, and comparison of the Samyang to the Zeiss APO 135, that's high praise.
Note: I used AWB, and while my color vision isn't very good, it looks like the SY renders the WB differently. Custom WB would likely negate unwanted color cast - my primary interest was in general sharpness and contrast, so I didn't bother with it.
All shots at F2.0, save the last pair at F8.0, and shot on a tripod.
All images have the LR lens profile applied, and +48 NR.
Otherwise, none should have had any adjustments, but it almost looks like LR (or me??) may have done something with the basic adjustments during export on some images.
Pairwise subject focus starts from the front, leftmost (viewer's left) item and progresses to the right, moves back a row and repeats.
In each pair, the Sigma is first, followed by the Samyang.
1. Front Leftmost bird
 F2.0-DSC06786Sig by lareginl, on Flickr
 F2.0-DSC06802Rok by lareginl, on Flickr
2. Front White figurine
 F2.0-DSC06788Sig by lareginl, on Flickr
 F2.0-DSC06803Rok by lareginl, on Flickr
3.Front rightmost head
 F2.0-DSC06789Sig by lareginl, on Flickr
 F2.0-DSC06804Rok by lareginl, on Flickr
4. Inca head (behind bird)
(Sigma had a difficult time locking on the face of the figure behind the bird. Took 3 attempts and needed to recompose slightly to find the rightmost edge of the head to lock focus)
 F2.0-DSC06792Sig by lareginl, on Flickr
 F2.0-DSC06805Rok by lareginl, on Flickr
5. Bottle
 F2.0-DSC06793Sig by lareginl, on Flickr
 F2.0-DSC06806Rok by lareginl, on Flickr
6. Brass head
 F2.0-DSC06795Sig by lareginl, on Flickr
 F2.0-DSC06807Rok by lareginl, on Flickr
7.Leftmost rear sculpture
 F2.0-DSC06797Sig by lareginl, on Flickr
 F2.0-DSC06808Rok by lareginl, on Flickr
8. Rightmost rear sculpture
 F2.0-DSC06800Sig by lareginl, on Flickr
 F2.0-DSC06809Rok by lareginl, on Flickr
9. F8.0 All (Focus on bridge of nose of white figuring)
 F8.0-DSC06801Sig by lareginl, on Flickr
 F8.0-DSC06812Rok by lareginl, on Flickr
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). Samyang really needs to get their act together because it's wrecking the fine work of their optical designers.