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Nikon DSLR Cameras
D810
D810 not honoring minimum shutter speed in commander mode
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<blockquote data-quote="WayneF" data-source="post: 342628" data-attributes="member: 12496"><p><span style="color: #000000"><span style="font-family: 'tahoma'"></span></span></p><p><span style="color: #000000"><span style="font-family: 'tahoma'"></span></span></p><p>Yes, that part is not only about flash. The job of Auto ISO is to try to give you an exposed picture. If boosting ISO to maximum is not enough to do it, then it must also reduce shutter speed to keep trying. This ISO Minimum Shutter Speed is not an absolute limit, it is a threshold for Auto ISO action.</p><p></p><p>The general philosophy of Auto ISO is that when the normal auto adjustments<strong> hit limits and can go no further</strong>, then Auto ISO kicks in for a second chance. For example, if in camera S mode, the camera reacts to dim light by opening the aperture more. But when that lens aperture is fully wide open, it can go no more, so then Auto ISO kicks in at that limit. If using camera S mode in dim light, all pictures will likely be at wide open aperture (auto ISO or not). Which does not always seem much of a plus.</p><p></p><p>But if using camera A mode, this concept of hitting a limit implies it is when the shutter speed hits its limit of 30 seconds, then Auto ISO would kick in. But that is not realistic use, so they added this new intermediate selectable limit (your 1/80 second in the ISO menu), to be the limit determining when Auto ISO kicks in. If using Auto ISO and camera A mode in dim light, all pictures will likely be at this shutter speed - so we should give it some thought.</p><p></p><p>In reality, choosing f/5.6 in camera A mode, and 1/80 second in this ISO menu, is generally no different than choosing camera Manual mode f/5.6 and 1/80 second, and letting Auto ISO deal with it. Either way, all pictures in workable dim light will be at f/5.6 and 1/80 second. We should be aware that this is what we are choosing.</p><p></p><p>Auto ISO increases are always operating at some limit. Some users think this may sometimes need greater individual attention than blindly relying on the automation. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p></p><p></p><p></p><p>It said: <span style="color: #000000"><span style="font-family: 'tahoma'"><span style="color: #b22222">When a flash is used, minimum shutter speed will be set to the value selected for <strong>Minimum shutter speed</strong> unless this value is faster than Custom Setting e1 (<strong>Flash sync speed</strong>, 0 329) </span></span></span><span style="font-family: 'tahoma'"></span></p><p><span style="font-family: 'tahoma'"></span></p><p><span style="font-family: 'tahoma'">Which is true of your 1/80, so it did that.</span><span style="color: #000000"><span style="font-family: 'tahoma'"><span style="color: #b22222"></span></span></span></p><p><span style="color: #000000"><span style="font-family: 'tahoma'"><span style="color: #b22222"></span></span></span></p><p><span style="color: #000000"><span style="font-family: 'tahoma'"><span style="color: #b22222">or</span></span></span><span style="font-family: 'tahoma'"> (it says <strong>OR</strong>)</span><span style="color: #000000"><span style="font-family: 'tahoma'"><span style="color: #b22222"> slower than Custom Setting e2 (<strong>Flash shutter speed</strong> </span></span></span><span style="font-family: 'tahoma'"> (which was not true, but the first condition was true, so it did that)</span></p></blockquote><p></p>
[QUOTE="WayneF, post: 342628, member: 12496"] [COLOR=#000000][FONT=tahoma] [/FONT][/COLOR] Yes, that part is not only about flash. The job of Auto ISO is to try to give you an exposed picture. If boosting ISO to maximum is not enough to do it, then it must also reduce shutter speed to keep trying. This ISO Minimum Shutter Speed is not an absolute limit, it is a threshold for Auto ISO action. The general philosophy of Auto ISO is that when the normal auto adjustments[B] hit limits and can go no further[/B], then Auto ISO kicks in for a second chance. For example, if in camera S mode, the camera reacts to dim light by opening the aperture more. But when that lens aperture is fully wide open, it can go no more, so then Auto ISO kicks in at that limit. If using camera S mode in dim light, all pictures will likely be at wide open aperture (auto ISO or not). Which does not always seem much of a plus. But if using camera A mode, this concept of hitting a limit implies it is when the shutter speed hits its limit of 30 seconds, then Auto ISO would kick in. But that is not realistic use, so they added this new intermediate selectable limit (your 1/80 second in the ISO menu), to be the limit determining when Auto ISO kicks in. If using Auto ISO and camera A mode in dim light, all pictures will likely be at this shutter speed - so we should give it some thought. In reality, choosing f/5.6 in camera A mode, and 1/80 second in this ISO menu, is generally no different than choosing camera Manual mode f/5.6 and 1/80 second, and letting Auto ISO deal with it. Either way, all pictures in workable dim light will be at f/5.6 and 1/80 second. We should be aware that this is what we are choosing. Auto ISO increases are always operating at some limit. Some users think this may sometimes need greater individual attention than blindly relying on the automation. :) It said: [COLOR=#000000][FONT=tahoma][COLOR=#b22222]When a flash is used, minimum shutter speed will be set to the value selected for [B]Minimum shutter speed[/B] unless this value is faster than Custom Setting e1 ([B]Flash sync speed[/B], 0 329) [/COLOR][/FONT][/COLOR][FONT=tahoma] Which is true of your 1/80, so it did that.[/FONT][COLOR=#000000][FONT=tahoma][COLOR=#b22222] or[/COLOR][/FONT][/COLOR][FONT=tahoma] (it says [B]OR[/B])[/FONT][COLOR=#000000][FONT=tahoma][COLOR=#b22222] slower than Custom Setting e2 ([B]Flash shutter speed[/B] [/COLOR][/FONT][/COLOR][FONT=tahoma] (which was not true, but the first condition was true, so it did that)[/FONT] [/QUOTE]
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D810 not honoring minimum shutter speed in commander mode
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