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<blockquote data-quote="WayneF" data-source="post: 527590" data-attributes="member: 12496"><p>Oops! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> You have me worried now, and I could be wrong about D7200, and if so, I sure would like to know it. I wonder if you could verify that quickly? Real simple, you can do it now sitting in your computer chair, and it is not necessary to take a picture. </p><p></p><p>With D7200, with Auto ISO on, with Minimum ISO set at 100, and with hot shoe flash on camera, but flash NOT turned on yet.</p><p></p><p>Just aim camera at anything in the indoor room (which is dim compared to bright sun). Half press shutter. View finder should show a high or maximum ISO value, as expected indoors. Then reach up and turn flash on, half press again, and this ISO in viewfinder should drop to 400, specifically which is a maximum of 2 stops above whatever Minimum ISO is (if with flash).</p><p></p><p>D7100 should do that too, but a D7000 is older, a different version of Auto ISO, and it would read a high ISO either way (in this room indoors). And older cameras (D300 or older) would read Minimum ISO either way (with flash). There have been these three versions of Auto ISO with flash. The "middle age" cameras screwed it up, but the recent models have fixed it again.</p><p></p><p>I am assuming TTL flash mode. Auto ISO will never advance if a manual mode flash is detected (manual flash cannot react to ISO changing). </p><p></p><p>It does seem important that we realize that turning Auto FP on (menu E1) will allow flash shutter speeds faster than Maixmum sync speed (1/250 second on D7200). Which then (assuming a camera and flash capable of HSS mode) enables HSS flash mode, which drops maximum power capability to about 20%, and removes all flash motion stopping capability. This tends to be noticeable. In practice, it tends to be done only to allow closeup portraits in bright sun at f/2.8 to blur the background. Otherwise, speedlight mode runs circles around HSS mode. We can turn Auto FP off. <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> More description of HSS flash mode at <a href="http://www.scantips.com/lights/flashbasics2b.html" target="_blank">Auto FP and HSS - What is it?</a></p><p><a href="http://www.scantips.com/lights/flashbasics2b.html" target="_blank"></a></p><p>Sorry, I don't know about having to press shutter harder. Should not be any affect on the button, but sometimes finding focus is harder in dim light, esp with a f/6.3 lens, and then (in normal modes) shutter and flash will not trigger until it it can focus (maybe causing sort of a delay). I've noticed then that I do try pressing shutter harder. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Next time pressing doesn't work, notice if the green "in focus" dot is visible in viewfinder, at bottom left.</p></blockquote><p></p>
[QUOTE="WayneF, post: 527590, member: 12496"] Oops! :) You have me worried now, and I could be wrong about D7200, and if so, I sure would like to know it. I wonder if you could verify that quickly? Real simple, you can do it now sitting in your computer chair, and it is not necessary to take a picture. With D7200, with Auto ISO on, with Minimum ISO set at 100, and with hot shoe flash on camera, but flash NOT turned on yet. Just aim camera at anything in the indoor room (which is dim compared to bright sun). Half press shutter. View finder should show a high or maximum ISO value, as expected indoors. Then reach up and turn flash on, half press again, and this ISO in viewfinder should drop to 400, specifically which is a maximum of 2 stops above whatever Minimum ISO is (if with flash). D7100 should do that too, but a D7000 is older, a different version of Auto ISO, and it would read a high ISO either way (in this room indoors). And older cameras (D300 or older) would read Minimum ISO either way (with flash). There have been these three versions of Auto ISO with flash. The "middle age" cameras screwed it up, but the recent models have fixed it again. I am assuming TTL flash mode. Auto ISO will never advance if a manual mode flash is detected (manual flash cannot react to ISO changing). It does seem important that we realize that turning Auto FP on (menu E1) will allow flash shutter speeds faster than Maixmum sync speed (1/250 second on D7200). Which then (assuming a camera and flash capable of HSS mode) enables HSS flash mode, which drops maximum power capability to about 20%, and removes all flash motion stopping capability. This tends to be noticeable. In practice, it tends to be done only to allow closeup portraits in bright sun at f/2.8 to blur the background. Otherwise, speedlight mode runs circles around HSS mode. We can turn Auto FP off. :) More description of HSS flash mode at [URL="http://www.scantips.com/lights/flashbasics2b.html"]Auto FP and HSS - What is it? [/URL] Sorry, I don't know about having to press shutter harder. Should not be any affect on the button, but sometimes finding focus is harder in dim light, esp with a f/6.3 lens, and then (in normal modes) shutter and flash will not trigger until it it can focus (maybe causing sort of a delay). I've noticed then that I do try pressing shutter harder. :) Next time pressing doesn't work, notice if the green "in focus" dot is visible in viewfinder, at bottom left. [/QUOTE]
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