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Focus help needed

quinny 13 167 United Kingdom
5 May 2012 10:31AM
Hi everyone, I've got a problem that's driving me mad. I am taking a photo where I want to focus on someones eyes and then hold that focus on the eyes but re-compose the shot for better composition. How do I do that? Because all that is happening is that once I have half pressed the shutter to focus on the eyes, I keep the shutter half pressed and then recompose and then press it all the way and when I look at the image on the lcd the focus is no longer on the eyes where I focussed. I'm looking the will to live.

I've looked at the Canon 5d mk ii manual and it might s well be in a different language. PLEASE HELP!!!!!!!!


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MrGoatsmilk 9 1.5k England
5 May 2012 10:36AM
Have you checked to make sure the focus is set to One shot and Not AI servo the latter will change to following a moving subject or the camera being moved will cause it to follow the focus point and not where you set it with a half press
Pete Plus
17 18.8k 97 England
5 May 2012 10:36AM
There are two main autofocus modes usually marked AFC (continually focuses) and AFS (locks focus)
If you have press when using the AFC mode it will continue to focus and is used for sports and action where you want the focus to track the moving subject. For your example the AFS mode will work as you'd hoped.
quinny 13 167 United Kingdom
5 May 2012 10:38AM
It is definitely sent to one shot. Where do I find the AFS mode?
Pete Plus
17 18.8k 97 England
5 May 2012 10:41AM
Sorry One Shot is the same. AFC and AFS are the designations used on most other cameras. Is it that you're letting go once you've taken the first shot. If so the focus will re adjust. The best thing in such instances is to switch to manual.
MrGoatsmilk 9 1.5k England
5 May 2012 10:43AM
When you say it's set to one shot are you certain that's focus and not shutter mode your mixing up?
LesJD 6 158 Wales
5 May 2012 10:43AM
Problem is once you've moved the camera the focus distance has changed slightly and if you've selected a wide aperture you've insufficient DOF. Best thing to do is to compose your shot and manually select a focus point that covers the eye.
Also has already been pointed out make sure you are not using al focus or al servo.
quinny 13 167 United Kingdom
5 May 2012 10:46AM
On the top of the screen that has all your settings it says ONE SHOT.
MrGoatsmilk 9 1.5k England
5 May 2012 10:48AM
Although I use a 40D my settings tend to be

Centre single focus point

One shot focus

One shot drive mode

I do change the latter when trying to get expressions on faces that are quickly changing, such as children
MrGoatsmilk 9 1.5k England
5 May 2012 10:50AM
Can you upload a shot with the exif data, as said above you may have too shallow DOF perhaps or the wrong focus point is focusing elsewhere
robthecamman 6 1.7k United Kingdom
5 May 2012 11:14AM
as i understand it use centre focus point half press shutter button then recompose
quinny 13 167 United Kingdom
5 May 2012 11:32AM
Sorry guys thanks for trying I just don't understand it at the minute an I've gotta go out. What I need is to find someone who has a canon 5d mk ii who can go through with me the custom functions settings that are on my camera and say what it should be set on. It might be something so simple that I've set it on that is causing the problem. Think I need to find someone who lives near me who can meet me and who can look at my camera for me.

Thanks anyway. God I feel such a newbie.
MrGoatsmilk 9 1.5k England
5 May 2012 11:58AM
Or just reset the camera to factory settings and start a fresh.

Good luck, I did think about meeting but I'm in south staffs, so a bit far. I'm sure there will be someone local to you.
robthecamman 6 1.7k United Kingdom
5 May 2012 12:29PM
go to utube canon 5d video show how to set up and use camera easiest

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