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Nikon DSLR Cameras
D7100
Autofocus Hunting
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<blockquote data-quote="neil@laubenthal.net" data-source="post: 635680" data-attributes="member: 43988"><p>Ah…I see. </p><p></p><p>It's pretty much universally hunting no matter the lighting conditions or selected exposure. Everything from birds out in bright sunlight to canyons to deep in the woods waterfalls. Shutter speeds from a second or more for the tripod mounted waterfall shots to 1/3200 for birds…aperture setting from wide open 3.5 to F29 for the waterfalls, and ISO setting from 100 to 1600. I've been futzing with it for 3 or 4 weeks now and haven't found any particular set of circumstances that isn't affected…although the low contrast/low light in the deep woods waterfall seem to be a bit worse for autofocus…but then that's really expected and I'm manually focusing then anyway. Here's a shot from today…tripod mounted at ISO 100, the 18-200 at 100mm or so, aperture at maximum I could get it and shutter speed of 0.8 seconds. I did try autofocus with a single point on the large rock right in the middle of the shot and it hunted about as much as it does these days…so manually focused on that point.</p><p></p><p>It actually focuses correctly on manual…but it's the hunting around instead of just locking in on the selected point that started recently.</p><p></p><p>[ATTACH]265870[/ATTACH][ATTACH]265870[/ATTACH]</p></blockquote><p></p>
[QUOTE="neil@laubenthal.net, post: 635680, member: 43988"] Ah…I see. It's pretty much universally hunting no matter the lighting conditions or selected exposure. Everything from birds out in bright sunlight to canyons to deep in the woods waterfalls. Shutter speeds from a second or more for the tripod mounted waterfall shots to 1/3200 for birds…aperture setting from wide open 3.5 to F29 for the waterfalls, and ISO setting from 100 to 1600. I've been futzing with it for 3 or 4 weeks now and haven't found any particular set of circumstances that isn't affected…although the low contrast/low light in the deep woods waterfall seem to be a bit worse for autofocus…but then that's really expected and I'm manually focusing then anyway. Here's a shot from today…tripod mounted at ISO 100, the 18-200 at 100mm or so, aperture at maximum I could get it and shutter speed of 0.8 seconds. I did try autofocus with a single point on the large rock right in the middle of the shot and it hunted about as much as it does these days…so manually focused on that point. It actually focuses correctly on manual…but it's the hunting around instead of just locking in on the selected point that started recently. [ATTACH=CONFIG]265870._xfImport[/ATTACH][ATTACH=CONFIG]265870._xfImport[/ATTACH] [/QUOTE]
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Nikon DSLR Cameras
D7100
Autofocus Hunting
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