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<blockquote data-quote="nickt" data-source="post: 456289" data-attributes="member: 4923">I believe that the d3300 can not be set up for release priority&nbsp; at all. (my d3100 can not) This limits the full effect affect of the bbf technique.&nbsp; That is, the d3300 will not allow focus and recompose with bbf. He loses the pseudo af-s mode one gets by releasing the bb and pointing camera to a new subject. Holding down the bb activates continuous focus as it should. Releasing the bb stops focus stops focus as it should, however the camera may not fire since it no longer sees focus as it has no release priority mode. He still may gain some convenience tracking the trains using the back button with single point as described in post #74. Another idea... He can trap focus on the train. Prefocus with bb where he expects the train. release bb. hold shutter down. Hopefully nothing is in focus and his shutter will not fire. Keep holding shutter, train arrives and nose of train satisfies focus sensor when it hits the proper location and shutter will release. Found this on a quick google:<a href="http://www.digital-photo-secrets.com/tip/1303/how-to-use-trap-focus-to-get-better-sports-and-wildlife-shots/" target="_blank">How to use trap focus to get better sports and wildlife shots - Digital Photo Secrets</a></blockquote>

[QUOTE="nickt, post: 456289, member: 4923"] I believe that the d3300 can not be set up for release priority at all. (my d3100 can not) This limits the full effect affect of the bbf technique. That is, the d3300 will not allow focus and recompose with bbf. He loses the pseudo af-s mode one gets by releasing the bb and pointing camera to a new subject. Holding down the bb activates continuous focus as it should. Releasing the bb stops focus stops focus as it should, however the camera may not fire since it no longer sees focus as it has no release priority mode. He still may gain some convenience tracking the trains using the back button with single point as described in post #74. Another idea... He can trap focus on the train. Prefocus with bb where he expects the train. release bb. hold shutter down. Hopefully nothing is in focus and his shutter will not fire. Keep holding shutter, train arrives and nose of train satisfies focus sensor when it hits the proper location and shutter will release. Found this on a quick google: [url=http://www.digital-photo-secrets.com/tip/1303/how-to-use-trap-focus-to-get-better-sports-and-wildlife-shots/]How to use trap focus to get better sports and wildlife shots - Digital Photo Secrets[/url] [/QUOTE]

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