06-15-2021, 01:03 PM
(This post was last modified: 06-15-2021, 01:15 PM by Brightcolours.)
(06-15-2021, 11:56 AM)you2 Wrote: Are those numbers on full frame or aspc ? I mean what is the point of having f2.8 if vignetting is nearly 10 stops ?
It is neither, basically. It is an APS-C lens, that is very undercorrected at 16mm. It is nearly 10 stops when you measure the corners that are supposed to be discarded anyway (by correcting the distortion in camera or in RAW conversion).
That the lens is f2.8 wide open has little to do with this. When corrected for distortion, it still is f2.8 at 16mm.