rvh23
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 Sigma 14-24mm f/2.8 DG DN first impressions | |
Thanks Fred. Here's my take on these:
The best of the lot to me looks to be the corner-focused shot without filter. Both shots with the filter (with and without refocus) seem a little softer.
For the center focused shots, the one without filter shows the effect of the lens' FC. And I agree the corner without filter does look a little sharper, suggesting the filter fortuitously modifies the FC such that the corner is more like the center.
Combined this to me suggests the filter slighlty reduces FC, at least for your copy of the lens at 14mm, but it also reduces overal sharpness across the frame slighlty.
Good to hear there is minimal difference in corners by F4 though. Does the center catch up there too?
The ease of mounting makes this a much more viable option.
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