juicer wrote:
Is there an estimate on the amount of vignetting wide open near 14-18mm, compared to other fast wides? Most seem to be around 2-3 stops, but if it extends deeper into the frame it makes a big difference on shutter speed for astro.
Vignetting is excellent. At 14mm F2.8 it is just under 2 stops for the extreme most pixels by my estimates, more like 1.5 stops in the corner region more generally, and about half that midway towards the corner.
Here is a set of 3 crops comparing brightness of the same portion of the sky (to ensure equal illumination) placed in the extreme corner (left), midway towards the corner, and center of the frame (right crop).
Sep 25, 2019 at 10:28 PM
Previous versions of rvh23's message #14992422 « Sigma 14-24mm f/2.8 DG DN first impressions »
