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<blockquote data-quote="WayneF" data-source="post: 420587" data-attributes="member: 12496">It is important.&nbsp; Set it to the shutter speed that you want your Auto ISO to usually and normally work at, most of the time.&nbsp; Set it for the same reasons you would normally control any shutter speed.It is good to know that, and to know that it is not actually a minimum shutter speed.&nbsp; As you shoot in A mode, the shutter gets slower when you need more light.&nbsp;&nbsp; But&nbsp; when it reaches this Auto ISO Minimum shutter speed, shutter stops decreasing, and then ISO starts increasing. It is the threshold for when Auto ISO starts increasing.&nbsp;&nbsp; Therefore, shutter speed will be fixed there (at that speed) anytime ISO is between Minimum ISO and Maximum ISO.But ISO only has a few stops of range, and if Maximum ISO is not enough to do it, then the shutter speed will continue decreasing more.&nbsp; It is not a Minimum shutter for anything other than Auto ISO.It makes more sense when we realize that Auto ISO always tries to remain off (low) if there are any other alternatives possible.&nbsp; For example, camera S mode, as we need more light, the aperture widens.&nbsp; When the lens hits wide open (maximum) and can go no more, then Auto ISO starts advancing.&nbsp; Auto ISO is only triggered by hard limits, without alternative.But the shutter can go to 30 seconds, which is not normally hand holdable.&nbsp; <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" />&nbsp; So they added this artificial limit (auto ISO Minimum Shutter Speed), so ISO doesn't have to wait to reach 30 seconds.In S or P modes, the aperture will open to maximum first, before ISO&nbsp; increases.&nbsp; So S or P modes when Auto ISO is a probably consideration probably&nbsp; always shoots with a lens wide open.&nbsp;&nbsp; I question that is always the&nbsp; best choice.&nbsp; <img src="http://nikonites.com/images/smilies/smile.png" alt="" class="fr-fic fr-dii fr-draggable " style="" />But again, when Auto ISO is needed, it will normally be at this ISO Minimum shutter speed, so consider it wisely.&nbsp; It is most likely what you will be using.</blockquote>

[QUOTE="WayneF, post: 420587, member: 12496"] It is important. Set it to the shutter speed that you want your Auto ISO to usually and normally work at, most of the time. Set it for the same reasons you would normally control any shutter speed. It is good to know that, and to know that it is not actually a minimum shutter speed. As you shoot in A mode, the shutter gets slower when you need more light. But when it reaches this Auto ISO Minimum shutter speed, shutter stops decreasing, and then ISO starts increasing. It is the threshold for when Auto ISO starts increasing. Therefore, shutter speed will be fixed there (at that speed) anytime ISO is between Minimum ISO and Maximum ISO. But ISO only has a few stops of range, and if Maximum ISO is not enough to do it, then the shutter speed will continue decreasing more. It is not a Minimum shutter for anything other than Auto ISO. It makes more sense when we realize that Auto ISO always tries to remain off (low) if there are any other alternatives possible. For example, camera S mode, as we need more light, the aperture widens. When the lens hits wide open (maximum) and can go no more, then Auto ISO starts advancing. Auto ISO is only triggered by hard limits, without alternative. But the shutter can go to 30 seconds, which is not normally hand holdable. :) So they added this artificial limit (auto ISO Minimum Shutter Speed), so ISO doesn't have to wait to reach 30 seconds. In S or P modes, the aperture will open to maximum first, before ISO increases. So S or P modes when Auto ISO is a probably consideration probably always shoots with a lens wide open. I question that is always the best choice. [IMG]http://nikonites.com/images/smilies/smile.png[/IMG] But again, when Auto ISO is needed, it will normally be at this ISO Minimum shutter speed, so consider it wisely. It is most likely what you will be using. [/QUOTE]

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