No autofocus beep when not in auto pic mode? (40D)

EspressoJunkie

EspressoJunkie

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Greg
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Hi all,

So I've been trying to wean myself off auto, and experiment with other settings recently with varying degrees of success.

I've noticed though that when I'm not in auto picture mode I don't seem to get a beep, or a red focus point to confirm the autofocus has locked on? The lenses seems to hunt to focus more in other modes as well. Have I got a setting wrong, or is this just how other modes operate?

Thanks in advance :-)
 
There's a beep/light? I must admit I just select the autofocus point I want and judge when the 40D has got focus by judging what I see through through the lens and listening to the focus motor.
 
In One Shot AF mode you will get a red focus confirmation in the viewfinder and, if you've enabled beeping, a beep too. If you're in AI Servo focus then you won't get a beep or a red confirmation because you're in focus tracking mode and the focus never locks. If you're in AI Focus mode then get out of it. Pretend it does not exist.
 
It would be better if you told us exactly which settings you have your camera on.
Have you set your lens to manual? (don't)
Which setting (on dial) Av/Tv/M/P/A-Dep? or one of the user settings?
 
Thanks for the replies guys.

Its mainly Av and Tv I've been using, and the lens is on auto.

I have it on servo so that would seem to explain the issue. So with servo its just a matter of judgement as to when the shots in focus?

Is this why the camera seems to hunt for focus more?
 
EspressoJunkie said:
Thanks for the replies guys.

Its mainly Av and Tv I've been using, and the lens is on auto.

I have it on servo so that would seem to explain the issue. So with servo its just a matter of judgement as to when the shots in focus?

Is this why the camera seems to hunt for focus more?
Click to expand...

Yes!
 
tdodd said:
If you're in AI Focus mode then get out of it. Pretend it does not exist.
Click to expand...

Can i ask why? I recently stopped using ai focus as i had a suspicion it was behind some of my pictures being oof.
 
Because it tries to figure out whether your subject is moving or not. Sometimes it gets the decision wrong. Sometimes it reacts too slowly and the AF gets left behind on the wrong mode. Sometimes it does something you do not want it to do. Canon's professional cameras do not even have that AF mode on them. It has a bad reputation, and deservedly so. I've even seen a video tutorial given by a Canon representative where he cautioned against its use.
 
tdodd said:
Because it tries to figure out whether your subject is moving or not. Sometimes it gets the decision wrong. Sometimes it reacts too slowly and the AF gets left behind on the wrong mode. Sometimes it does something you do not want it to do. Canon's professional cameras do not even have that AF mode on them. It has a bad reputation, and deservedly so. I've even seen a video tutorial given by a Canon representative where he cautioned against its use.
Click to expand...

Ah ok, thanks. I was expecting an answer along those lines.
 
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