Sony A7R V exact same photos - different results - broken exposure

[cinges]

I shot two photos at the exactly same time, with same settings, same lighting conditions (continuous mode). One have correct exposure, one is broken and overexposed. Why?? Shutter speed, iso, aperature, everything is identical, so photo should be also same, but it's not Why?

- Bracketing is off, and even if on, exposure time would be different.

- Using just continues drive mode

- auto iso settings

- auto ael

This happens randomly, sometimes 10 shots in a row are overexposed this weird way. Photo is then completely ruined and cannot be fixed. 

[danardeng]

With artificial light is a common effect of flichering of the main light.

The anti-flicker function help a lot to obtain uniform ecposition and white balance ( https://helpguide.sony.net/ilc/2230/v1/en/contents/TP0003057052.html ), and can happen that the expected exposure (measured before to shoot) is not the same of final shot.

The solution is to slow down the shutter speed. In your case you was at 1/125 that is really slow for the lens (150mm), so you can only accept the fact, stay safe with a little bit lower exposition, and recover in postproduction (with raw files, of course).