focusing

duttytd said:
Thanks but I still can't get my head round what it is lol.
Click to expand...

You just focus using the back AFON button instead of half pressing the shutter button. It allows continous focusing when shooting and separates the focusing from the shutter. This means the camera won't try and refocus every time you press the shutter button. Especially useful for sports, macro, portraits.. Pretty much everything in fact.
 
so on the 5d 2 pressing that button disables the focusing function from the shutter button
so back buuton focuses and the shutter just takes the pic
does this work for all modes one shot, af servo and ai servo
 
On my 1D I use it all the time helps seperate the function, allows for metering locking and allows for refocusing. I would turn it on and try, gets a little getting used to but once you do you may never go back.
It can be used for both one shot and servo, great for BIF, kids action etc.and allows you to recompose easier without any effect on the other.
 
This post should help it should be CF 4
 
ukcyberboy said:
On my 1D I use it all the time helps seperate the function, allows for metering locking and allows for refocusing. I would turn it on and try, gets a little getting used to but once you do you may never go back.
It can be used for both one shot and servo, great for BIF, kids action etc.and allows you to recompose easier without any effect on the other.
Click to expand...

When I press the button in the 5 d it does focus so I guess it's turned on
So the shutter button then only activates exposure and the sitter
I take it in servo you keep it pressed at sane time as u press shutter
So both button together
 
I use back button focus and find it much better, but can i lock the exposure while using this method or would i have to keep the shutter half pressed for exposure to lock.
thanks for any help
 
I used it all the time until I got my D7000, which is too damn small to do it effectively. TBH, I've hardly noticed a difference going back to the standard configuration.
 
I've never seen the point of it myself and defo would not focus and recompose unless doing a rough and ready hyperfocal and focusing on a point at an estimated distance.

Others rave about this technique but for me what works is centre point or manual focus for anything not central, too complex for auto focus and macro.
 
The23rdman said:
I used it all the time until I got my D7000, which is too damn small to do it effectively. TBH, I've hardly noticed a difference going back to the standard configuration.
Click to expand...

I started using this on my D5k, set it up on the D7k and agree that the back button is small and fiddly, I bought a grip and as I shoot 90% portrait orientation the grip button is sooooo much easier than the body button.
 
I would very much like to use back button focusing with my D7000, because the shutter release seems to be on a hair trigger, and I often find myself releasing the shutter before I've finished composing the picture. It suits me to use centre focusing and focus first before composing. Unfortunately the back button is just a bit too long a stretch for my short thumb. I guess I'll just have to learn to tame the shutter release.
 
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