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Message: <blockquote data-quote="goz63" data-source="post: 6558" data-attributes="member: 1557">I have read many threads about ISO settings. Most recommend using ISO 200 and if you want to use some of the D90's auto ISO features, have it adjust the ISO based on a minimum shutter speed and then set a maximum ISO setting. All this makes sense as the low ISO minimizes noise on the photo. Now the question. Since the D90 will shoot at ISO 100, is there a reason not to use 100 other than the obvious need for a higher setting due to lighting? It would seem based on the premise that lower ISO's mean a sharper image, in bright daylight an ISO setting of 100 would be better. Opinions...?</blockquote>