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Nikon DSLR Cameras
D800/D800E
D800E ISO sensitivity settings
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<blockquote data-quote="WayneF" data-source="post: 459891" data-attributes="member: 12496"><p>That is just a misunderstanding about the controls offered. </p><p></p><p>If you want a fixed shutter speed, then use camera exposure modes S or M. That will work up<strong> until </strong>maximum ISO is reached. Note that ISO 100 to 3200 is only five stops of range.</p><p></p><p>This control named Minimum Shutter Speed is NOT an absolute minimum shutter speed. It is in the Auto ISO menu, and it is the minimum shutter speed <strong>until</strong> Auto ISO increase to maximum ISO fails to deliver proper exposure.</p><p></p><p>The setting is the threshold speed for Auto ISO, in modes A or P. </p><p></p><p>When we use the camera in falling light, the shutter speed necessarily slows to maintain proper exposure.</p><p></p><p>This Minimum is the threshold, the minimum speed at which the shutter speed stops falling, and instead, ISO starts advancing.</p><p></p><p>It is the minimum speed for the Auto ISO range. <strong> All of our pictures in Auto ISO mode</strong> (those between Minimum and Maximum ISO) will use that threshold minimum shutter speed, so we should consider its value carefully. It is the shutter speed you will use when Auto ISO is in play.</p><p></p><p>But when maximum ISO is insufficient to maintain exposure, then shutter speed has to continue its fall, to any lower values. It is after all an automatic camera given instructions to try for a correct exposure.</p><p></p><p></p><p>See your D810 manual, page 112 (other cameras, see Auto ISO Sensitivity Control, second page, Step 3).</p><p></p><p>It says (in Nikon speak, takes a few readings), speaking of ISO sensitivity:</p><p></p><p>In exposure modes P and A, sensitivity will only be adjusted if underexposure would result at the shutter speed selected for Minimum Shutter Speed. </p><p></p><p>(it does not continue to say that underexposure will not be allowed to result, if slower shutter can prevent it).</p><p></p><p>Says: In modes S or M, sensitivity will be adjusted at the shutter speed selected by the user.</p><p></p><p>That meaning is as I described above.</p></blockquote><p></p>
[QUOTE="WayneF, post: 459891, member: 12496"] That is just a misunderstanding about the controls offered. If you want a fixed shutter speed, then use camera exposure modes S or M. That will work up[B] until [/B]maximum ISO is reached. Note that ISO 100 to 3200 is only five stops of range. This control named Minimum Shutter Speed is NOT an absolute minimum shutter speed. It is in the Auto ISO menu, and it is the minimum shutter speed [B]until[/B] Auto ISO increase to maximum ISO fails to deliver proper exposure. The setting is the threshold speed for Auto ISO, in modes A or P. When we use the camera in falling light, the shutter speed necessarily slows to maintain proper exposure. This Minimum is the threshold, the minimum speed at which the shutter speed stops falling, and instead, ISO starts advancing. It is the minimum speed for the Auto ISO range. [B] All of our pictures in Auto ISO mode[/B] (those between Minimum and Maximum ISO) will use that threshold minimum shutter speed, so we should consider its value carefully. It is the shutter speed you will use when Auto ISO is in play. But when maximum ISO is insufficient to maintain exposure, then shutter speed has to continue its fall, to any lower values. It is after all an automatic camera given instructions to try for a correct exposure. See your D810 manual, page 112 (other cameras, see Auto ISO Sensitivity Control, second page, Step 3). It says (in Nikon speak, takes a few readings), speaking of ISO sensitivity: In exposure modes P and A, sensitivity will only be adjusted if underexposure would result at the shutter speed selected for Minimum Shutter Speed. (it does not continue to say that underexposure will not be allowed to result, if slower shutter can prevent it). Says: In modes S or M, sensitivity will be adjusted at the shutter speed selected by the user. That meaning is as I described above. [/QUOTE]
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Nikon DSLR Cameras
D800/D800E
D800E ISO sensitivity settings
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