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p.5 #3 · p.5 #3 · Official: Sigma 16-28mm f/2.8 DG DN (E-mount and L-mount) | |
Right, here comes a quick comparison/measurbation of the Sigma 16-28 vs Tamron 17-28. YouTube has plenty of excellent comparisons of landscapes and test charts, so I bring you environmental portraits with bokeh, which is what I like shooting most of the time. Apologies for the banal subject matter - putting the kids in the sandpit is the only way I could get them to sit (reasonably) still.
TLDR: Both lenses are really close, neither is "better" than the other; the Sigma appears to be optimised for <=20mm whilst the Tamron is uniformly strong throughout the FL range. Get what you can get your hands on or afford; get the Sigma if the extra 1mm wide angle matters.
Here is the album with crops and full-size samples of the comparison. All shots from A7R III, RAW files processed using Capture One 12 with low sharpening.
16/17mm @ F/2.8 - Sigma top, Tamron bottom
A strong performance from both lenses with fairly inoffensive bokeh on both. I'd give a slight edge to the Sigma for sharpness and contrast, but we're literally splitting hairs here. The 1mm FL advantage on the Sigma is real and potentially very handy.
16-17mm by Ryan Li, on Flickr
Sigma
16mm Sig DSC03825 by Ryan Li, on Flickr
Tamron
17mm Tam DSC03834 by Ryan Li, on Flickr
20mm @ F/2.8 - Tamron top, Sigma bottom
I'd give a very slight edge to the Sigma here, see the marginally sharper straw hat with marginally less CA. Sigma has "messier" bokeh but personally I prefer it to the high-contrast and overly structured bokeh on the Tamron.
20mm by Ryan Li, on Flickr
Tamron
20mm Tam DSC03873 by Ryan Li, on Flickr
Sigma
20mm Sig DSC03875 by Ryan Li, on Flickr
24mm @ F/2.8, Sigma top, Tamron bottom
This FL appears to be Sigma's weak spot with noticeably hazier details. Bokeh looks awful for both with doughnuts (strong outlines) everywhere, though if I had to pick the least worst it would be the Tamron. Not going to sell my 24GM anytime soon...
24mm by Ryan Li, on Flickr
Sigma
24mm Sig DSC03892 by Ryan Li, on Flickr
Tamron
24mm Tam DSC03896 by Ryan Li, on Flickr
28mm @ F/2.8, Tamron top, Sigma bottom
Tamron is again slightly but noticeably superior in terms of sharpness. Sigma has poorer OOF transitions, but Tamron has marginally more LOCA in OOF areas (though again both have less than ideal doughnut bokeh). I'd give a win to the Tamron overall.
28mm by Ryan Li, on Flickr
Tamron
28mm Tam DSC03818 by Ryan Li, on Flickr
Sigma
28 Sig DSC03821 by Ryan Li, on Flickr
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