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Nikon DSLR Cameras
D750
Auto ISO
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<blockquote data-quote="eastside" data-source="post: 632003" data-attributes="member: 40928"><p>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. </p><p></p><p> As someone who has done film for over 50 years, this ISO change is confusing. </p><p></p><p>Two possibilities: I don't know what I am doing OR a slight defect in my 750. </p><p></p><p>eastside</p></blockquote><p></p>
[QUOTE="eastside, post: 632003, member: 40928"] 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 [/QUOTE]
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Auto ISO
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