I made 3 photos; manual mode, same subject, same focus. (1) 1/100, F8, Auto ISO2800; (2) 1/200, F8, Auto ISO9000, (3)1/400. F8, Auto ISO12800. I use single-servo AF mode (AF-S),EV Compensation for each photo was O, GrP Group Area (5 point). Why did the auto ISO change so much: 2800 to 9000 to 12800? After all the only change I made from photo to photo was doubling the shutter speed one stop. So I expected the ISO to double when going from (1) to (2) and also from (2) to (3). I was not in Liveview. Active D-Lighting was set to N. Center weighted 12mm. Not using a tripod.
As someone who has done film for over 50 years, this ISO change is confusing.
Two possibilities: I don't know what I am doing OR a slight defect in my 750.
eastside
As someone who has done film for over 50 years, this ISO change is confusing.
Two possibilities: I don't know what I am doing OR a slight defect in my 750.
eastside