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Nikon DSLR Cameras
D7100
Back button focus , disables lateral tracking off center point?
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<blockquote data-quote="nickt" data-source="post: 355375" data-attributes="member: 4923"><p>To fully use the technique, menu A-1 is set to release priority. Other wise if you were to keep it focus priority, releasing the back button and recomposing might not allow the camera to fire since it does not see focus.</p><p></p><p>Whether you are using back button or shutter button, the area modes should work the exactly same as long as the back button is held down. So the only question I see is menu A-1, release or focus priority. If there is action that you need to catch, you will be holding down the back button full time anyway. In effect, the same as if you were using the shutter button. Back button discussion aside, some people prefer af-c with release priority anyway for fast action. The thinking is hopefully subject is in reasonable in focus when shutter fires. The alternative is you are in focus priority and get no shot at all if the action is too fast. So I'm with the release priority crowd. </p><p></p><p>I've only been using the back button steadily for a few months, but that's my thoughts. mainly I am using single point. For the area modes, I would likely be holding the back button down full time anyway, so its just like using the shutter button. that way the area modes can continue to do their thing as usual up to shutter release. As I see it, releasing the back button to hold focus is something I would only want to do with single point focus anyway. </p><p></p><p>I would keep the delay (A3) thing off unless I have some compelling reason to keep it on. For instance, you are panning on some sports action and there are some light poles you will be panning across. The delay would ignore that. Otherwise it is a nuisance and you should keep it off so there are no delays in keeping up with the action.</p></blockquote><p></p>
[QUOTE="nickt, post: 355375, member: 4923"] To fully use the technique, menu A-1 is set to release priority. Other wise if you were to keep it focus priority, releasing the back button and recomposing might not allow the camera to fire since it does not see focus. Whether you are using back button or shutter button, the area modes should work the exactly same as long as the back button is held down. So the only question I see is menu A-1, release or focus priority. If there is action that you need to catch, you will be holding down the back button full time anyway. In effect, the same as if you were using the shutter button. Back button discussion aside, some people prefer af-c with release priority anyway for fast action. The thinking is hopefully subject is in reasonable in focus when shutter fires. The alternative is you are in focus priority and get no shot at all if the action is too fast. So I'm with the release priority crowd. I've only been using the back button steadily for a few months, but that's my thoughts. mainly I am using single point. For the area modes, I would likely be holding the back button down full time anyway, so its just like using the shutter button. that way the area modes can continue to do their thing as usual up to shutter release. As I see it, releasing the back button to hold focus is something I would only want to do with single point focus anyway. I would keep the delay (A3) thing off unless I have some compelling reason to keep it on. For instance, you are panning on some sports action and there are some light poles you will be panning across. The delay would ignore that. Otherwise it is a nuisance and you should keep it off so there are no delays in keeping up with the action. [/QUOTE]
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Nikon DSLR Cameras
D7100
Back button focus , disables lateral tracking off center point?
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