Quote:
Originally Posted by MaximusJ
Its the same on Nikon. But when you're not touching the button at all and you push it down all the way in AF priority, the AF is still gonna work his way through before snapping the shot (Not a delay like a P&S).
But with the back focus button, you get your focus, and then it stays there even if you take your time before snapping the shot (as long as your subject doesnt move). So it almost serve the same purpose as a AF-L button.
I'm pretty sure its very similar. Lets not hide it, Canon and Nikon are copycats to each other. They wouldnt let that gap separates one from the other. Its just the way that one's using it that makes one technique more useful then the other I guess; based on personal preferences.
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Those that use the shutter release to focus would never take their finger off the release button while actively shooting. You either set focus with the shutter release or the back button. Either way you have to push a button.
On Canon, there's no delay of shutter, if you've focused. If you try to release the shutter without focusing and simply push the shutter release all the way down, then there'll be a delay if the camera is not in focus. If you've got a 500mm lens on the camera and it's focused at 15-ft and you're trying to shoot something at 100-ft, then it could take a second or more. You only try that once and learn not to do it. Only noobs do that. You have to focus first or go to MF if you want an OOF shot. Focus with either the shutter release or back button, but focus first.
Dave