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Nikon DSLR Cameras
D3100
Manual setting
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<blockquote data-quote="PhotoEnth47" data-source="post: 123947" data-attributes="member: 13095"><p>Because the camera was set to manual, it would not adjust either the shutter speed or aperture. If the light meter showed it needed an exposure of 1/125 sec at F8 using ISO 100, then I'm not sure why auto ISO would change the ISO to 3200. However, if it did, then the pics would definitely be overexposed by 5 stops (not underexposed), as the sensitivity of the sensor was turned up by that much, with the shutter and f/stop remaining at 1/125 and F8. </p><p></p><p>It depends what minimum shutter speed was set in the auto ISO settings. If it was a fast shutter speed, then the auto ISO would have raised the ISO accordingly, to compensate. I don't think that auto ISO is a good idea when using manual mode shooting.</p></blockquote><p></p>
[QUOTE="PhotoEnth47, post: 123947, member: 13095"] Because the camera was set to manual, it would not adjust either the shutter speed or aperture. If the light meter showed it needed an exposure of 1/125 sec at F8 using ISO 100, then I'm not sure why auto ISO would change the ISO to 3200. However, if it did, then the pics would definitely be overexposed by 5 stops (not underexposed), as the sensitivity of the sensor was turned up by that much, with the shutter and f/stop remaining at 1/125 and F8. It depends what minimum shutter speed was set in the auto ISO settings. If it was a fast shutter speed, then the auto ISO would have raised the ISO accordingly, to compensate. I don't think that auto ISO is a good idea when using manual mode shooting. [/QUOTE]
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Manual setting
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