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Nikon DSLR Cameras
D5300
Focus Priority
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<blockquote data-quote="aroy" data-source="post: 373157" data-attributes="member: 16090"><p>Inspite of all the brick bats he gets, at times Ken Rockwell can talk sense. Here is his take on "Trap Focus"</p><p><a href="http://www.kenrockwell.com/tech/sports.htm" target="_blank">How to Shoot Sports</a></p><p></p><p>"[FONT=Arial, Helvetica, sans-serif]<strong>TRICK: </strong>you can get most AF Nikon cameras to wait and release the shutter only when an object has moved into a preset focus distance if you set the AE-L/AF-L button to AF ON (set in a custom function) and then keep the shutter pressed all the way down while NOT pressing the AE-L/AF-L button. This is called Trap Focus. How does this trick work? Presuming you have the camera set to AF-S mode the camera won't shoot until it thinks the subject is in focus. By setting the AE-L/AF-L button to AF-ON the camera won't focus itself unless you press that button. If you don't press the AF button the camera has to wait for the subject to move and when the "in focus" dot lights up the camera will shoot so long as you've been holding the shutter button all the way down. This trick works so long as you have the camera and lens set to AF-S mode and keep holding the shutter all the way down. If you set the camera to manual focus or touch the focus ring on an AF-s lens while holding down the shutter it will shoot at the wrong time. It's a primitive hack and I doubt it's smart enough to predict subject motion for good results photographing something like horses jumping over a fixed object, but worth a try. It also doesn't work if the subject is moving so fast that the camera doesn't notice it's in focus as the object flies by. Of course you need to prefocus the lens where you want it while not holding the shutter down.</p><p></p><p><span style="font-size: 10px">I am going to try this today on bees today.</span></p><p>[/FONT]</p></blockquote><p></p>
[QUOTE="aroy, post: 373157, member: 16090"] Inspite of all the brick bats he gets, at times Ken Rockwell can talk sense. Here is his take on "Trap Focus" [url=http://www.kenrockwell.com/tech/sports.htm]How to Shoot Sports[/url] "[FONT=Arial, Helvetica, sans-serif][B]TRICK: [/B]you can get most AF Nikon cameras to wait and release the shutter only when an object has moved into a preset focus distance if you set the AE-L/AF-L button to AF ON (set in a custom function) and then keep the shutter pressed all the way down while NOT pressing the AE-L/AF-L button. This is called Trap Focus. How does this trick work? Presuming you have the camera set to AF-S mode the camera won't shoot until it thinks the subject is in focus. By setting the AE-L/AF-L button to AF-ON the camera won't focus itself unless you press that button. If you don't press the AF button the camera has to wait for the subject to move and when the "in focus" dot lights up the camera will shoot so long as you've been holding the shutter button all the way down. This trick works so long as you have the camera and lens set to AF-S mode and keep holding the shutter all the way down. If you set the camera to manual focus or touch the focus ring on an AF-s lens while holding down the shutter it will shoot at the wrong time. It's a primitive hack and I doubt it's smart enough to predict subject motion for good results photographing something like horses jumping over a fixed object, but worth a try. It also doesn't work if the subject is moving so fast that the camera doesn't notice it's in focus as the object flies by. Of course you need to prefocus the lens where you want it while not holding the shutter down. [SIZE=2]I am going to try this today on bees today.[FONT=arial black][/FONT][/SIZE] [/FONT] [/QUOTE]
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