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Archive 2011 · "Back Button" focusing on the 50D?
  
 
TractionAction
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p.1 #1 · p.1 #1 · "Back Button" focusing on the 50D?


I really like this feature on the Mark III, now I'm in the need for a back up camera and am looking at the 50D to fill in. Please advise if there is a setting to do this and how it can be done?

Many thanks!



Nov 01, 2011 at 03:58 AM
kumori
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p.1 #2 · p.1 #2 · "Back Button" focusing on the 50D?


Yes, this is a feature. It's one of the Custom Function settings.


Nov 01, 2011 at 04:11 AM
BrianO
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p.1 #3 · p.1 #3 · "Back Button" focusing on the 50D?


TractionAction wrote:
I really like this feature on the Mark III... Please advise if there is a setting to do this and how it can be done?


Simplicity itself...C.Fn IV controls how the button functions, and whether the shutter button also activates AF or not.








Nov 01, 2011 at 09:56 AM
Mark2Mark
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p.1 #4 · p.1 #4 · "Back Button" focusing on the 50D?


On the 50D you can create a menu under the "my menu" heading which appears when you press the menu button. I have the custom function C.Fn IV listed there, along with MLU, AEB, etc. It takes seconds to change between shutter and back button focusing.


Nov 01, 2011 at 02:03 PM
TractionAction
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p.1 #5 · p.1 #5 · "Back Button" focusing on the 50D?


Very cool! I'm all set...Thanks.


Nov 02, 2011 at 12:32 AM
EB-1
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p.1 #6 · p.1 #6 · "Back Button" focusing on the 50D?


Mark2Mark wrote:
On the 50D you can create a menu under the "my menu" heading which appears when you press the menu button. I have the custom function C.Fn IV listed there, along with MLU, AEB, etc. It takes seconds to change between shutter and back button focusing.


I'm not sure who ever goes back after using the rear button AF. I've been doing it over ten years now.

EBH



Nov 02, 2011 at 12:40 AM
bigbluebear
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p.1 #7 · p.1 #7 · "Back Button" focusing on the 50D?


I don't see any advantage vs the shutter button unless your wearing gloves or something.



Nov 02, 2011 at 12:47 AM
 

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dudemanppl
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p.1 #8 · p.1 #8 · "Back Button" focusing on the 50D?


Then you probably haven't used it.


Nov 02, 2011 at 12:52 AM
Monito
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p.1 #9 · p.1 #9 · "Back Button" focusing on the 50D?


datousteve wrote:
I don't see any advantage vs the shutter button unless your wearing gloves or something.


There are huge advantages. It means you can lock focus and shift the camera slightly off a focus point. One such technique is called focus-and-recompose, but it has limits.

It means that you can deliberately set one focus in a field of changing objects (people milling around a central figure for example) and not have to focus for every shot.

It means you can focus stack.

It means you can focus and meter in any order. You can also compose before during or after those (within limits).

It means you don't have fiddle switch autofocus on and off at the lens.

I set it as soon as I discovered it available and never looked back.

You can always reset focus simultaneously with the shutter button by coordinating your thumb and shutter finger. It's extremely easy and natural, once you get used to it.

Don't leave yourself at the mercy of the shutter button.

Backbutton focus is very creative and returns control to the photographer (assisted by tools at their discretion), which is where it ultimately belongs.



Nov 02, 2011 at 12:56 AM
bigbluebear
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p.1 #10 · p.1 #10 · "Back Button" focusing on the 50D?


Thanks Monito. I'll think about those use cases.


Nov 02, 2011 at 04:55 AM
RobDickinson
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p.1 #11 · p.1 #11 · "Back Button" focusing on the 50D?


Back button focusing is orsome, you never go back.


Nov 02, 2011 at 05:55 AM
Lance Lee
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p.1 #12 · p.1 #12 · "Back Button" focusing on the 50D?


datousteve wrote:
I don't see any advantage vs the shutter button unless your wearing gloves or something.


I really think back button focus is something that either suits someone or it doesn't. You either like it or don't. Neither way is better, but for many of us the other way seems crazy.

One case where it is great, is on a tripod with a cable release. You want to be able to focus, then use your cable release and not have to worry about it trying to refocus.



Nov 02, 2011 at 11:07 AM
gpop
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p.1 #13 · p.1 #13 · "Back Button" focusing on the 50D?


RobDickinson wrote:
Back button focusing is orsome, you never go back.



I agree. once you go back, you never go back.
wait a sec......



Nov 02, 2011 at 04:54 PM





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