Back button focusing for 5d Mark III. How do I set it up?

How do I set up Back Button focusing on my new 5D Mark III. Can't find instructions in Canon supplied manual or third-party book.
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It's really easy because it's mostly already set up... The AF-On button on the back of the camera already starts and stops AF.
To set up true BBF technique, you turn off the AF function at the shutter button. I believe it's Custom Function IV, 1: Opertaion/Others.... where you make button assignments. Navigate to the shutter button icon and press "set" to enter the options for that... change to the center one "metering start" and press "set" again. Done.
Optionally you can swap the function of the AF-On and "*" (AE Lock) buttons, using the same button assignment tool.
Alan Myers
San Jose, Calif., USA
"Walk softly and carry a big lens."
GEAR: 5DII, 7D(x2), 50D(x3), some other cameras, various lenses & accessories
FLICKR & PRINTROOM

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What settings do I use to back button focus set up for the d5 mark 3? TIA

5D Mark 3
Solved!
Go to Solution.

When you activate the menu, scroll over (using the dial on the front of the camera) to the orange "C.Fn2: Disp./Operation" menu. (that's the icon of a camera that has a index marks for a light meter below it -- right of the wrench icon, left of the star icon.)
Each of those menu's on the 5D III have multiple pages. It's the 2nd page (the 2nd dot from the left) that has the category for "Custom Controls". Highlight that (using the dial on the back this time) and click the 'set' button.
That brings up a menu showing each of the major controls on the back of the camera and what they do. Highlight the icon for the shutter button (this only changes the behavior of a half-press) and change it from "Metering and AF start" to just "Metering start".
The "AF-ON" button (on the back of your camera) is likely already set to "Metering and AF start" (I believe that's the factory default.)
So you're not so much enable back-button focus (which is already probably active)... you're more "disabling" the focus when the shutter button is pressed half-way.
Good luck
Tim Campbell
5D II, 5D III, 60Da

Back button focusing with the 6D

I cannot get my 6D's back button focus (AF-ON) to work. After following directions on Canon's website on how to set it up, the button just does not do anything. Auto focus only works with the shutter button. I have the function set to "P" which I understood to be o.k. Would resetting the camera to factory default help? I would prefer not to have to send the camera to Canon for a one button repair. The camera body was purchased new and is still under warranty.
Thanks
Solved!
Go to Solution.

It's super easy to set up BBF on a 6D....
If you have already been changing some things and are unsure which ones, you might want to reset all the Custom Functions to factory default, before starting. (Note: There is a way to view which C.Fns are set and to what each is assigned... As you enter each of the four C.Fn groups, note the list in the lower LH corner of the LCD screen, that shows all the C.Fns in that group at a glance. The top line is the C.Fn number, the bottom line is the setting for each C.Fn.)
To set up BBF....
All you have to do is go into the menu, Custom Functions, C.Fn III-5, operations/others, button assignments. Select and enter that and then press "set" and this should take you right to the top of the LH column, which is a graphic illustration of the shutter release button. Press set again to enter this, then scroll to select the center option "start metering" and press "set" once more to select this choice, then press "menu" button several times to back out of the menus. Done!
What this does is remove AF start from the shutter release button. By default it's already assigned to the AF-On button on the back of the camera too, so BBF is set up and ready to use as soon as you remove it from the shutter release button.
Metering and Image Stabilization will continue to start with a half press of the shutter release button or whenever you press the AF-On button. But AF will only start with your thumb on the AF-On button. Using BBF, you now can use AI Servo most of the time, for stationary or moving subjects. If you want to "focus and recompose", simply focus and then lift your thumb off the AF-On button to leave focus where it is and recompose as you see fit. (Without BBF, you cannot do focus and recompose.... it will cause mis-focused shots.) You still might want to switch back to One Shot when you want high precision focus with stationary subjects.
There is another option you may want to consider...
Using the same Custom Function III-5, if you prefer you can swap the functions of the AF-On and * (AE Lock) buttons. I do this on my cameras for a couple reasons: One is that the * button is larger, more prominent, and closer to my thumb... so I prefer to use it for focusing. The other reason is that older Canon models that didn't have the AF-On button, you had to use the * button and that's the way I learned to use BBF (Note: In some cases there was an AF-On button on the body but not on the vertical grip, while older cameras simply didn't have an AF-On button at all, on the body or the grip).
Alan Myers
San Jose, Calif., USA
"Walk softly and carry a big lens."
GEAR: 5DII, 7D(x2), 50D(x3), some other cameras, various lenses & accessories
FLICKR & PRINTROOM

70D and Back Button focus

I have set up the camera for back button focus. HOWEVER ... when I review shots taken using BBF, in Aperture, the "Focus Point" display indicates I focused always in the center of the screen, not off to the right or left, as I might have recomposed. Yes, I keep the AF On button pressed.

I don't have 70D, but have been using BBF most of the time for the past 15 years with various Canon film and digital cameras. I'm one of those folks who swear by it! And I would guesstimate that most people I've taught to use it over the years love it and swear by it, too. BBF allows you to use AI Servo as your default AF mode, so is particularly popular with sports photographers or anyone else shooting action and moving subjects. I'd rather have my camera in AI Servo, since it can be used with both moving and stationary subjects. One Shot can mostly only be used with stationary subjects. So, using AI Servo as my default mode, I'm better prepared for whatever happens. If you don't use BBF there are times that AI Servo can cause problems, such as when you use single point and a focus and recompose technique. So, that's basically why I use and swear by BBF. It puts me in more full control and allows me to have my cameras in AI Servo ready and ready to quickly get a shot of almost anything, using most any technique I wish. But, based on your description, you might be using BBF wrong. You wrote, "I have set up the camera for back button focus... as I might have recomposed... I keep the AF On button pressed." In fact, this is exactly the opposite of what you need to do. What you should do when focusing and recomposing with BBF is NOT maintain pressure on the back button. To focus and recompose while using BBF and AI Servo: first put the AF point on the subject and achieve focus... Then release the button so the AF stays focused on the subject, while recomposing as you see fit. The subject stays in focus. (You cannot do sngle point/focus and recompose in AI Servo mode with shutter-release based AF control enabled. You have to use One Shot.) One caveat, if using a zoom and part of your recomposing involves changing its focal length, be aware that many modern zoom lenses are "varifocal" designs that do not maintain focus when zoomed. With those, you'll be fine so long as you are using AI Servo, BBF and not recomposing (i.e, not moving the AF point off the subject)... the camera automatically corrects focus as you zoom. But if you zoom a varifocal lens at the same time or as a part of the recomposition, you need to remember to update focus on the subject after changing the focal length... else you'll miss focus. Look for info about any zooms you use, to see if they are varifocal and need refocusing after zooming... Or if they're "parfocal" type that will maintain focus during zooming. I only very rarely take my cameras out of BBF now... Mostly just if I'm lending one to someone who doesn't know how to use it and I don't have time to give them a lesson. BBF puts me more in control of the AF system... of exactly when and where it focuses. It gives me the best of both worlds: the speed and accuracy of AF, plus user control more like we had when we manually focused our lenses. Like others, most of the time I tend to use center AF point only. I just don't have time to set up planned shots when shooting sports/action. Plus with some cameras and lenses the center point is higher performance. But, I see AF point selection as a somewhat separate consideration from BBF... and single point/center only works quite well in conjunction with BBF... or not. More info about BBF here: http://www.learn.usa.canon.com/resources/articles/2011/backbutton_af_article.shtml ***********
Alan Myers
San Jose, Calif., USA
"Walk softly and carry a big lens."
GEAR: 5DII, 7D(x2), 50D(x3), some other cameras, various lenses & accessories
FLICKR & EXPOSUREMANAGER

Active Focal Point Not Shown in Software Using Back Button Focus

I use Back Button Focus (BBF) and set the focus point (using center spot).
In the software (DPP, ZoomBrowser or EOS Utility) the point I selected is not highlighted in the view window.
All points are shown, but none highlighted.
If I take the same shot using default focus method (shutter button AF), the point is highlighted .
Why is this?
Not too technical, please
Canon 3Ti, EF 50mm f/1.4 USM, EF-S 18-55mm f/3.5-5.6 IS II, EF-S 55-250mm f/4-5.6 IS II, 320EX Speedlite

Thanks.
I did just download and install the updates (DPP, EOS, Picture Style Editor and Zoom Browser).
Still no red focus point(s) shown with Back-button Focusing.
I searched on the web for this "symptom" and found, that I'm not alone.
It seems in Back-Button Focusing, the focus point won't be displayed unless you hold the back button down (* button in my case) while pressing the shutter button.
I tried holding the * button while taking a shot and yes the red box shows up.
This seems like defeating the usefulness of back button focusing. (???).
What do I know? I'm just a newbie.
Canon 3Ti, EF 50mm f/1.4 USM, EF-S 18-55mm f/3.5-5.6 IS II, EF-S 55-250mm f/4-5.6 IS II, 320EX Speedlite

Any idea when Lightroom will have support for 5D Mark III?

Any idea when Lightroom will have support for 5D Mark III?

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Thanks Geoff and Jeff.
On the regular LR updates, will the update be for LR3 also or just for LR4?
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I need to have both Next & Back buttons displayed for viewing 20 records at

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I have bought an additional iPad (mini) for my wife, but how do i set up her email address only without mine appearing on her iPad?

I have bought an additional iPad (mini) for my wife, but how do i set up her email address on her iPad only without my email accounts also appearing on her iPad?

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EOS C100 and 5D Mark III - How to use together, match settings, etc.

I shoot with both of these cameras and wondering if anyone has a reference for matching the picture settings. For example, on the C100, there is a custom preset setting 'EOS Standard' that I assume corresponds to the 'Standard' picture style on the 5D Mk III. But, what if I want to shoot cinema locked, HDR or some other way?

percoplus wrote:
As a matter of fact, I had the 5D Mark II bundle at first, and Then I installed the new Mark III bundle with version 3 of the EOS utility. None of it is working - in terms of creating a new preset.
It seems wrong that the window that opens with 'Register User Defined Style' has a drop down with all of the default presets already in the camera. That drop down should not be there, should it? There should only be the choice to import a new preset or maybe edit an existing preset. If you wanted one of the defaults, you would select it from the previous menu window.
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Safari back button assignment for mouse

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Using Back button issue for radio button

Dear All,
My initial screen has 2 radio buttons, on selecting will take to a selection screen with few fields, i have enabled the back button using MODULE user_command AT EXIT-COMMAND.
when i select a Radio Button 1 which takes to the Selection Screen 1, if the user clicks back button it works fine, even thou we got a mandatory field, it goes back,
however when i click Radio Button 2 it still takes me to Selection Screen 1, its the same vice versa.
Is there anyway i can change the screen based on radio button entry

Hi Krishan,
You can call your desire selection screen based on the button click.
if you are working on report program (SE38), then say you have two radio button p1 and p2 and also you have created two selection screen block B1 and B2 and each block has some selection screen elements i.e fields.
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so a demo code for the same,
SELECTION-SCREEN BEGIN OF BLOCK a WITH FRAME TITLE text-049.
PARAMETERS: p_header RADIOBUTTON GROUP asim USER-COMMAND s DEFAULT 'X',
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SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-051.
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SELECTION-SCREEN END OF BLOCK b1.
SELECTION-SCREEN BEGIN OF BLOCK b2 WITH FRAME TITLE text-050.
PARAMETERS : p_vbeln1 TYPE vbap-vbeln MODIF ID sc2,
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AT SELECTION-SCREEN OUTPUT.
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         screen-active = '0'.
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       MODIFY SCREEN.
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   ELSEIF p_item EQ 'X'.
     LOOP AT SCREEN.
       IF screen-group1 = 'SC2'.
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code:
MODULE user_command_900 INPUT.
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Syed

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Hello
I would like some thoughts on the best approach to the following problem please.
-You have a wizard, lets say made up of 2 pages.
-Page 2 has some required fields.
-User goes from page 1 to page 2 then wants to return to page 1 for whatever reason.
-(Assuming they havent filled in the required components), what is the best way to let the user navigate back to page 1, without the system kicking in its required fields warnings etc..
One option I have thought of is populating the fields myself, but this feels like a hack.
Second option could be to edit the required=#{} of the required components when the back button is pressed?
Any thoughts?
JC.
Message was edited by:
jamesclinton

Good tip.
ok, back to the main thread. immediate = true will result in any data the user entered being forgotten. The solution does by-pass the required rules, so its a mini result.
Tomahawk does have a stateSave component.
<t:saveState id="save" value="#{bean.xxx}" />
And a JavaScipt listener component.. I'm thinking both or one of these could be used to remember/store the state..
If anyone has any other solutions then please post.
JC
Message was edited by:
jamesclinton

When navigating off home page(s), back button unavailable for use

When I start up Firefox, I have 5 home pages. Once I navigate off the homepage to a page inside the sight, the homepage isn't available on the back button. When I first started using Firefox, I didn't have this problem, it has started with recent updates and has continued onto V4.0. I have loaded more than once, and this doesn't correct the problem

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Back button focusing for 5d Mark III. How do I set it up?

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