The Sony A7R V manipulates RAW files.
The vignetting figures of the 20-70mm f/4 G are unreal.
I've tried 3 different RAW converters, and none shows any relevant vignetting at 28mm f/4 and just a bit at 20mm f/4.
Chief Editor - opticallimits.com
Doing all things Canon, MFT, Sony and Fuji
Should I say I'm surprised? :-)
stoppingdown.net
Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2
Plus some legacy Nikkor lenses.
Put it on a Nikon Z camera with adapter; guess that ought to do the trick. :-)
Out of curiosity, Klaus: did you run a quick and dirty test with an older Sony camera? I'd be curious about when Sony baked the manipulation into the camera firmware.
stoppingdown.net
Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2
Plus some legacy Nikkor lenses.
