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Back Button Focus
Nov 25, 2017 10:24:09   #
canonuser25 Loc: Cardiff (Wales NOT England)
 
Dear hoggers, I know this has been covered a lot but I can't find the answer.
Can you use BBF on an EOS80D (recently acquired) with Live View and if so how?
Thanks in anticipation of the usual helpful replies.
By the way with ref to a previous conversation the 80D was a "preloved" item from MBP. No problems at all.
Pete Elk

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Nov 25, 2017 10:35:27   #
traveler90712 Loc: Lake Worth, Fl.
 
Find it here

https://www.youtube.com/watch?v=91roCC0uwN4

Google and youtube is your friend

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Nov 25, 2017 10:40:24   #
Dngallagher Loc: Wilmington De.
 
canonuser25 wrote:
Dear hoggers, I know this has been covered a lot but I can't find the answer.
Can you use BBF on an EOS80D (recently acquired) with Live View and if so how?
Thanks in anticipation of the usual helpful replies.
By the way with ref to a previous conversation the 80D was a "preloved" item from MBP. No problems at all.
Pete Elk


Yes - Custom menu III, set AF ON to "metering and AF start", set shutter button to Metering start - then when you go into LIVE VIEW you will meter with a half press of the shutter, but focus is controlled by the AF ON button on the back of the camera (BBF)

In viewfinder mode the same applies - thumb on BBF (AF ON) to activate focus and half press meters

Note - you probably want to be in AF SERVO mode as well..so focus is continuous as long as you hold the AF ON button down.

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Nov 25, 2017 11:08:48   #
amfoto1 Loc: San Jose, Calif. USA
 
Hi Peter,

I don't know the answer to your question nor have any way to test it (I don't use an 80D), but...

Actually, in my opinion Live View with a Touch Screen and Touch Focus may be one of the few occasions when it doesn't make a lot of sense to use BBF...

However, I understand that on 80D when BBF is set up (i.e., AF has been disabled at the shutter release button), Live View's Touch Focus won't work. In Live View, I would think that more useful than BBF and would want to use it.

What you might want to try is set up a C (Custom) mode where BBF is disabled (i.e., the camera is returned to the factory default focus mode) and Touch Focus is enabled (maybe Face Detection, too, if wanted). It would be quick and easy then, to switch over using only the mode dial, when ever you're using Live View.

I've used BBF as my default on many other Canon DSLRs for the last 15 or 16 years. Along with AI Servo, BBF is a very important "must have" feature for me since I shoot a LOT of sports/action. However, I haven't used any of the Canon models with Dual Pixel AF, Touch Screen/Touch Focus control and Face Detection, such as the 80D offers. In cameras with that feature set, even if it did work I probably would disable BBF in Live View and switch to Touch Focus instead, as described above. To me that just makes more sense when using Live View. Even without those features, sometimes I DO disable BBF while using Live View (which really isn't all that often... mostly just macro and close-ups... and maybe the occasional posed portrait or landscape/architecture shot).

BTW, I don't know if it's possible on the 80D, but on the Canon M5 mirrorless with it's similar sensor and DPAF, while using the viewfinder (instead of Live View) you can actually use the Touch Screen for AF point selection with your thumb, in place of the "joystick" or multi-direction buttons that are used for that purpose on the DSLRs.

traveler90712 wrote:


Unfortunately, I don't see where that video helps answer Peter's question. The video simply shows how to set up BBF on 80D, which Peter obviously already knows how to do and, in fact, has done.

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Nov 25, 2017 13:43:03   #
Dngallagher Loc: Wilmington De.
 
amfoto1 wrote:


BTW, I don't know if it's possible on the 80D, but on the Canon M5 mirrorless with it's similar sensor and DPAF, while using the viewfinder (instead of Live View) you can actually use the Touch Screen for AF point selection with your thumb, in place of the "joystick" or multi-direction buttons that are used for that purpose on the DSLRs.



Think you might be mistaken... if you are in viewfinder mode the touch screen is off, unless you first press the (Q)uick access button above the multiselect dial... and then I have not seen where it will select the focus point unless you are in LIVE VIEW.

When in Live View you can select the focus point and/or also trip the shutter by pressing on the LCD screen.

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Nov 26, 2017 08:59:34   #
Doowopa Loc: Connecticut
 
In C.Fn III Custom Controls Once you set the AF.ON button to BB focus change the shutter button to meter or AE lock move the white box to what you want to focus on in Live View and push the AF button.

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Nov 26, 2017 10:46:31   #
jeep_daddy Loc: Prescott AZ
 
canonuser25 wrote:
Dear hoggers, I know this has been covered a lot but I can't find the answer.
Can you use BBF on an EOS80D (recently acquired) with Live View and if so how?
Thanks in anticipation of the usual helpful replies.
By the way with ref to a previous conversation the 80D was a "preloved" item from MBP. No problems at all.
Pete Elk


Change it in custom settings menu. It's easy. Youtube is your friend too.

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