[Prince Harbinger]

Has anyone ever encounter this issue before? I tested out my new lens which is a APS-C lens for Sony E. It's the Sigma 56mm F/1.4 DG DN C. When indoors aiming the camera at a white ceiling with the shutter at 1/15th is when I can begin to see the green cast creep up. It gets deeper as the shutter goes up. I notice this strange green cast when looking through the viewfinder. A member of this forum suggested that I turn off shading comp. I did, and the green cast disappeared. I would like to know if this is normal with this lens, and what exactly causes this strange phenomenon? I tried looking it up, but could find nothing on it. Here's a photo that I took with my phones camera placed in the viewfinder.

Dropbox - 20210211_143606.jpg - Simplify your life

[c.a.m]

I would like to know if this is normal with this lens, and what exactly causes this strange phenomenon?

It seems that the phenomenon is not unique to your lens, but is an artifact of Sony's implementation of 'shading compensation' in certain cameras.

Here's a relevant discussion from two years ago pertaining to the A7 R III and 28/2 FE lens: Sony vignetting correction and banding - FM Forums

That thread references another discussion related to the Sony A7 III: https://www.dpreview.com/forums/thread/4330654



- Craig