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FORUMS Photography Talk by Genre Sports Talk 
Thread started 24 Jun 2013 (Monday) 22:19
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Use back focus button?

 
rdmello
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Aug 15, 2013 08:05 |  #16

I just switched to BBF last week after reading many suggestions. I'm still getting used to it. It feels awkward, but I'm determined to give it a good try.

I do switch to One Shot Focus when needed. Am I hearing that I don't need to? I understand that hitting the BBF once essentialy does one shot focus, but is there any benefit to actually changing the focus setting?


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Sep 03, 2013 13:48 |  #17

Back button? Never. Why not manual focus? If you practice anything enough, you can get real good at it. Try shooting a dragon fly in flight with back button focus! Ha!


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Hannya
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Sep 05, 2013 09:35 |  #18

I use bbf but for action sports when I need to track a player. Not sure what you are using it for, but I use AIServo and centre spot focus point. It does take some getting used to, but I found it worth persevering with.


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Sep 05, 2013 09:41 as a reply to  @ Hannya's post |  #19

Love my BBF... only thing I use now. On my 7D and 6D I also changed the Depth of Field button so that it changes from One Shot Focus to AI Servo. Makes it really easy to start tracking an animal or dragonfly when they start moving or flying.

Ron


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Sep 09, 2013 22:20 |  #20

Which one do you'll use IV1-2 or IV1-3 and why?

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Thomas ­ Campbell
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Sep 11, 2013 12:50 |  #21

Back Button is the best. Only way to go.


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Echo63
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Sep 16, 2013 22:30 |  #22

I too use Back Button Focus, I love being able to easily separate focus and metering/picture taking

If you want to turn it off though, it's custom function 4.1 - just turn it back to "0" (off)


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MrMitch
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Sep 24, 2013 08:35 |  #23

When I shoot sports I've been using the half press to focus method. I don't think I'm missing shots but I really don't know how holding the button on the back would make much of a difference compared to the shutter focus?


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ormathisen
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Sep 24, 2013 12:10 |  #24

It gives you a lot more freedom in lots of situations. I tried it a few times before I did see the benefits of BBF


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burnet44
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Sep 24, 2013 14:41 |  #25

from what I understand it is continious tracking
Instead of refocusing when you push the shutter button half way
it tracks continually
as objects move the focal distance changes
pressing the shutter half way will get a focal point when you press it
the object changes distance before you press the shutter
For me it was really big with action coming directly at you
On my 40D I finally went back button focus after reading about it on POTN
HUGE difference
I havent figured it out on my 1d2
I press the BBF but really have no clue if its actually working or If Im doing it right
but the 1d2 is sharper and I have a lot more keepers than my 40D
and I dont spray and pray
maybe 4-5 shots sometimes
but I dont do a drive by shooting
I know a lot of people blast away
maybe I should blast away also IDK
I can see things happening as a play develops or presnap by formation
not all the time but a lot
seems the pro guys shoot a lot
maybe I should join them

the above is opinion
which is prob wrong
it is not intended for actual knowledge or instructional purposes
please feel free to post more acurate info


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MrMitch
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Sep 24, 2013 19:24 |  #26

Thanks, I guess I'll try it out next time I go shooting.

BTW, it's custom function 4.1 in the menus on the 1D2.


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apersson850
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Oct 03, 2013 08:25 as a reply to  @ MrMitch's post |  #27

There's no technical difference between holding AF-ON vs. keeping the trigger button at half-press. But it's a lot more difficult to maintain half-press of the trigger button, without neither letting go nor taking a picture by mistake, compared to keep the AF-ON button fully depressed or not depressed at all. In a situation at a sports event, where perhaps many other people are bouncing you around, then it's a big difference.

A technical difference which does exist is that using AF-ON to focus, you can temporarily stop Servo AF from tracking but still take photos. If your target goes partly behind some obstructions, you can prevent the camera from re-focusing on the obstruction and sometimes still get shots, with some blurred out-of-focus obstruction covering only parts of the image.
That's impossible with AF on the trigger button.


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Shooting
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Oct 04, 2013 08:38 |  #28

I use back focus all the time, even when shooting weddings or portraits.




  
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flashpoint99
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Oct 04, 2013 13:27 |  #29

For me its hard to understand how it takes getting used to or why it would be akward. I found for sports its one of the best thing you can do to improve your keeper rate. I saw no reason to ever go back...just my opinion.




  
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Thomas ­ Campbell
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Oct 04, 2013 14:24 |  #30

Shooting wrote in post #16345409 (external link)
I use back focus all the time, even when shooting weddings or portraits.

Shutter button focus seriously screws me up now. Been on back button since 2004 because the first DSLR I bought on ebay was already set up like that. :D


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Use back focus button?
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