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

Similar Messages

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

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.
Solved!
Go to Solution.

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

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

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

How do I use edge commons composition loader to load multiple compositions with a next and back button?

I am working on an interactive book and have set up each page as a separate composition in edge.
I am using the edge commons JS library to load multiple compositions into a main composition.
You can see how this works here: Edge Commons - Extension Library for Edge Animate and Edge Reflow | EdgeDocks.com
The way the edge commons tutorial is set up requires a button for each composition i want to load. I am interested in loading multiple compositions with a "next" and "back" button, and a "swipe left, "swipe right" gesture on the content symbol that each composition is loaded into. I also need the swipe features on the content symbol not to interfere with the interactive elements on the loaded composition.
Please suggest a solution that will work without adding additional scripts beyond edge commons and jquery.

Sort of. I'm using this code inside an action for a button symbol. But it doesn't work perfectly. Trying to debug it.
Let me know if you have any luck.
//Check to see if pageCounter already exists
if (typeof EC.pageCounter === 'undefined') {
// it doesn't exist so initialize it to first page
EC.pageCounter = 2;
//check if the page is only 1 digit -- patch for single digit
if (EC.pageCounter < 9) {
// it is, so we need to pad a 0 on the front.
EC.pageCounterString = "0" + EC.pageCounter;
//e.g. 01 ...09,11,12,13....115,222352,,....
else {
EC.pageCounterString = EC.pageCounter;
EC.loadComposition(EC.pageCounterString + "/publish/web/" + EC.pageCounterString + ".html", sym.$("container"));
EC.pageCounter = EC.pageCounter + 1;
//TODO for back -1

How do you use forward and back button on mouse and use "zoom" in web browser.

Ok so apparently this forum is ruled with an iron fist or something my very honest and truthful problems with these issues seem to have been instantly deleted in my last discussion?
I'll try this once more.
1) How do you use the forward and back button on a mouse without having to buy a product like Steer Mouse? There must be a way to do this without having to buy a program given it's such a useful feature that 99% of users need. I don't want to spend hours researching something that should already work. Any advice?
2) How do you zoom in for web browsers like Chrome without it globally zooming in everything on the monitor (even background applications). I don't want to zoom in background applications. I want to be able to zoom in the web browser and still maintain all the features like the side bar, not just a little magnifying glass type thing.
I'm currently zooming in with the CTRL-Middle Mouse button, but I can't find a way to use this feature so it's useful to browse the web it seems to not scale the browser correctly but rather is a global zoom. Any solution for this?

Thanks so much!
Like I said I am new to Apple products so it's still unclear to me which programs I do or don't need as I'm setting up and configuring all my software and devices.
The Logitech Control Center appears to work perfectly for what I was trying to do!
I accidently clicked "This helped me" instead of "This Solved My Question", sorry about that this was a solve!

Problems with Next and Back Buttons ActionScript 3.0

Hi,
I have set up a Back, Play and Next buttons in a slideshow I am making. The next and back buttons work correctly until it gets to the end.
If I press the Next button it goes back to what appears to be Frame 1 and will not go to the next slide. If I press the Back button it will then go to Frame 201 and If I press next again it will go to Frame 1. It will only go back and forth in between those frames.
If I press the Back button from the beginning it goes through the slide show correctly then it gets stuck at Frame 1. If I press next button it goes to Frame 121 and gets stuck in between 121 and 1.
I can't figure this out please help.
My code on Frame 1 is:
stop();
play_btn.addEventListener(MouseEvent.CLICK,playslideshow);
function playslideshow(event:MouseEvent) { gotoAndPlay(2); }
forward_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_2);
function fl_ClickToGoToAndStopAtFrame_2(event:MouseEvent):void
gotoAndStop(40);
back_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_8);
function fl_ClickToGoToAndStopAtFrame_8(event:MouseEvent):void
gotoAndStop(281);
My code on Frame 40 is:
forward_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_7);
function fl_ClickToGoToAndStopAtFrame_7(event:MouseEvent):void
gotoAndStop(121);
back_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_9);
function fl_ClickToGoToAndStopAtFrame_9(event:MouseEvent):void
gotoAndStop(1);
My code on Frame 121 is:
forward_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_3);
function fl_ClickToGoToAndStopAtFrame_3(event:MouseEvent):void
gotoAndStop(201);
back_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_10);
function fl_ClickToGoToAndStopAtFrame_10(event:MouseEvent):void
gotoAndStop(40);
My code on Frame 201 is:
forward_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_4);
function fl_ClickToGoToAndStopAtFrame_4(event:MouseEvent):void
gotoAndStop(281);
back_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_11);
function fl_ClickToGoToAndStopAtFrame_11(event:MouseEvent):void
gotoAndStop(121);
My code on Frame 281 is:
forward_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_5);
function fl_ClickToGoToAndStopAtFrame_5(event:MouseEvent):void
gotoAndStop(1);
back_btn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_12);
function fl_ClickToGoToAndStopAtFrame_12(event:MouseEvent):void
gotoAndStop(201);

I found the solution! Flash CS5 Tutorial 6 Click On Button Go To Another Frame.avi - YouTube
I had to Convert to Keyframes each frames I wanted to jump to on the buttons layer. Then highlight the button and give each another instance name! Like forward1_btn, forward2_btn, back1_btn, back2_btn... I did that and adjusted the action-script for each button.
Frame 1
stop();
play_btn.addEventListener(MouseEvent.CLICK,playslideshow);
function playslideshow(event:MouseEvent)
gotoAndPlay(2);
forward1_btn.addEventListener(MouseEvent.CLICK, Shoot_1);
function Shoot_1(event:MouseEvent):void
gotoAndStop(40);
back1_btn.addEventListener(MouseEvent.CLICK, Back_1);
function Back_1(event:MouseEvent):void
gotoAndStop(281);
Frame 40
forward2_btn.addEventListener(MouseEvent.CLICK, Shoot_2);
function Shoot_2(event:MouseEvent):void
gotoAndStop(121);
back5_btn.addEventListener(MouseEvent.CLICK, Back_5);
function Back_5(event:MouseEvent):void
gotoAndStop(1);
And so on...

I was messing with the computer, not sure what i hit but now all my toolbars at the top of the screen are gone? (file, edit, history, tools and my forward and back button). Please help me get these settings back to the way they were?

My file, edit, view, history, bookmarks, tools, and help buttons at the top of the screen are gone, along with my forward and back button.

For details of how to restore it, see https://support.mozilla.com/kb/menu+bar+is+missing
Once the menu bar is restored, you can use the Toolbars entry in the View menu to restore other toolbars such as the navigation toolbar.

How can i create forward and back buttons for a dreamweaver slideshow?

Hi
I am an illustrator attempting to create a website in dreamweaver (basically it will be an online portfolio). I would like to have a box/slideshow with images of my work that someone can browse through by clicking 'next' and 'back' buttons. Does anyone know how to do this? I have been trying to find out how to do this for ages - i dont want to use flash if possible as i am worried about making the site too complicated. I know how to make swap image thumbnails, but i think my site would be more user friendly (and look more professional) if i could have next and back buttons. Would this involve complicated css code (which scares the life out of me!) or is there a relatively easy way to do it? I have got two 'dreamweaver for idiots' books, but neither of them cover this topic. Can anyone help?

If you are using CS4, there is a Command to create a Web Album... this does it automatically for you.
Otherwise, you can create this manually. Say you have 3 pages,
page1.html (is the index page of the album)
page2.html
page3.html
Therefore, using ordinary text links
Home would link to page1.html
Previous would link to page3.html
Next would link to page2.html
You would need to make adjustments naturally to each page as you move along with the gallery pages, changing the previous and the next links as needed. Below is a a basic example of setting up the links in a simple table structure. You would also then style the table layout as you see fit - yes, using css preferably :-)
<table>
<tr>
<td><h2>MY GALLERY OF PHOTOS</h2>
<a href="page3.html">Previous</a> | <a href="index.html">Home</a> | <a href="page2.html">Next</a>
</td>
</tr>
<tr>
<td>
<br>
<a href="../images/img_2401_jpg.jpg"><img src="../images/img_2401_jpg.jpg" border=0></a><br>
</td>
</tr>
</table>
Here's an article on creating an album using the DW Command I mentioned earlier. You could create the album and then copy and paste the code into a current page if you've already designed on.,... not too difficult, I just tested it. You do however, need to have Fireworks to process the images.
http://livedocs.adobe.com/en_US/Dreamweaver/9.0/help.html?content=WSc78c5058ca073340dcda91 10b1f693f21-7ad1.html
You could also check out the Lightbox effect which is very popular:
http://www.lokeshdhakar.com/projects/lightbox2/
Or do a google search for 'jquery'. There are different album effects using that framework as well.
Hope some of this helps :-)
Nadia
Adobe® Community Expert : Dreamweaver
Unique CSS Templates |Tutorials |SEO Articles
http://www.DreamweaverResources.com
Book: Ultimate CSS Reference
http://www.sitepoint.com/launch/005dfd4/3/133
http://twitter.com/nadiap

Updated to 3.0 - sluggish responses and "back" button no longer working?

Hi all, first post - I'd like to know if others are having similar experiences after upgrading to 3.0 on a 2nd gen ipod touch.
First off, when playing music, the "back" button always used to take me back to the previous song if the current song had only just started. However, now when I press "back", I get a random song, just like pressing "forward" in shuffle mode - so I cannot go back to re-rate a song for example. I want my "back" button back!
Second, does anyone else find the responses to the "forward" and "back" buttons slow? There's like a half-second delay while the ipod "thinks" about performing the action, and before the screen updates (scrolls to the next album cover or details screen).
Hoping there will be an official update ASAP to address these issues!

Anytime you have problems like this, you should go through this routine:
1. Restart your iPod - Hold the Sleep/Wake button down until you see the red slider - turn it off. To turn it back on, use the Sleep/Wake button and you will see an Apple icon as it restarts.
2. Reset your iPod - Hold the Sleep/Wake button and the Home buttons down together until you see an Apple logo (takes about 10 seconds). Let your iPod restart.
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BTW, broken WiFi seems to be a very individual problem and there appear to be some work arounds. Battery life doesn't seem to be a general issue but again, an individual problem.

In Firefox 3.6.10 I was able to go forward and backwards between pages without the page defaulting to the top of the page. Is there any way to prevent the page from automatically moving to the top when using the forwards and back buttons in Firefox Four?

I like to be able to navigate backwards and forwards without having to scroll down and find where I was previously. In Firefox Four, when using the forwards and back buttons, the page will automatically return to the top of the page. Is there any way to change this setting in Firefox Four to prevent it from doing that?

Thanks for the response. No Time Machine, but I probably have a backup from a few months ago on an external hard drive. :/ I guess it'd have useful history, but not if it overwrote the last 3 months or so of Awesome Bar, that might not be so great.

Forward and Back Buttons Don't Work

Greetings,
My forward and back buttons on the mouse don't work in PSE 7. Instead I always have to click the forward or back buttons on the toolbar, or use keyboard shortcuts (alt+left arrow or alt+right arrow).
Does anyone else have the same problem?
Thanks,
Shane.
Photoshop Elements 7
Windows Vista Home Premium SP2

This is working for me. The forward and backward buttons on the toolbar would work only with pressing of Alt button i.e. Alt+Left arrow.
Suppose you are in Single image view, and press left and right arrow keys, application would switch to previous and next photo respectively.
Please let me know if you have other concern.
~Sourabh

Forward and back buttons greyed out, no forward or back available in right click menu either

After upgrading to the latest FF14 the forward and back buttons and menu versions of forward and back are greyed out.
Tried the sqllite check and it says all my databases are fine. Tried safe mode, same thing. Tried a new profile, same thing.
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You could have backed up your profile folder. If you did, [[Recovering important data from an old profile]] can help :)

How do I make a custom Forward button and Back button?

I've got an almost completely custom theme and it's working great with one exception: The forward and back buttons (used to move between menu pages) are from the original theme I based mine on, and they are now white on white = invisible.
I tried showing package contents and completely replacing the two images in the Forward button folder, but when I return to iDVD and reapply the theme, there is no change.
Thanks,
ck

A further note: They seem to be the one button type that you can't select. Even in editing (non-preview) mode, if you click on them, they route you to the appropriate page. So there's no way (apparently) to select them and change their color.
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70D and Back Button focus

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