Al-Servo 50D

Started May 16, 2010 | Discussions
Erindi1
Junior MemberPosts: 25
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Al-Servo 50D
May 16, 2010

Hi, I would like to know if it is possible to set my 50D on al servo and to recompose the shot. I do a lot of wildlife photography and when on one shot (in order to recompose) the animal suddenly starts to run. Then there is no time to switch to al servo. Could someone please give me advice on what to do.

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Rakumi
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Re: Al-Servo 50D
In reply to Erindi1, May 16, 2010

maybe try the custome settings mode (mode dial c1 or c2) I just started using one of those.
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clknight
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2 things:
In reply to Erindi1, May 16, 2010

1. Leave it on AI Servo
2. Switch your AF to the AF-ON or * button

Then.....

For tracking- hold down the AF button. For still subjects- bump it to achieve focus, then release. You're free to recompose at this point with the AF inactive.
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Colin

Canon 7D, 50D, 40D
500mm f/4, 85mm f/1.8, 70-200mm f/4, 17-50mm f/2.8

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Olga Johnson
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Reassign focus button
In reply to Erindi1, May 16, 2010

Erindi1 wrote:

Hi, I would like to know if it is possible to set my 50D on al servo and to recompose the shot. I do a lot of wildlife photography and when on one shot (in order to recompose) the animal suddenly starts to run. Then there is no time to switch to al servo. Could someone please give me advice on what to do.

On page 181 of the manual read about C-FN IV-1.

You switch focus to the AF-on button. This way you can acquire focus in AI-Servo, let go of the button, recompose, and hit the shutter without making the camera refocus.

Here's a write-up by Canon on that:

http://www.usa.canon.com/dlc/controller?act=GetArticleAct&articleID=2286

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Olga

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carlk
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Re: 2 things:
In reply to clknight, May 16, 2010

That's the best way to do it. Many, myself included, set the camera in AI servo with back AF button all the time.

clknight wrote:

1. Leave it on AI Servo
2. Switch your AF to the AF-ON or * button

Then.....

For tracking- hold down the AF button. For still subjects- bump it to achieve focus, then release. You're free to recompose at this point with the AF inactive.
--

http://www.pbase.com/clknight
Colin

Canon 7D, 50D, 40D
500mm f/4, 85mm f/1.8, 70-200mm f/4, 17-50mm f/2.8

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R2D2
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Re: 2 things:
In reply to carlk, May 17, 2010

carlk wrote:

Many, myself included, set the camera in AI servo with back AF button all the time.

Right. I never use "One Shot" ever.

R2

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fwampler
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Re: 2 things:
In reply to clknight, May 17, 2010

Yep. Great method. I'm in that mode pretty much 100% of the time.

clknight wrote:

1. Leave it on AI Servo
2. Switch your AF to the AF-ON or * button

Then.....

For tracking- hold down the AF button. For still subjects- bump it to achieve focus, then release. You're free to recompose at this point with the AF inactive.
--

http://www.pbase.com/clknight
Colin

Canon 7D, 50D, 40D
500mm f/4, 85mm f/1.8, 70-200mm f/4, 17-50mm f/2.8

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Fred

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Erindi1
Junior MemberPosts: 25
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Re: Reassign focus button
In reply to Olga Johnson, May 17, 2010

Hi I would like to thank all off you for the advice on how to use the rear AF button on my 50D.

I have done the switch and it does work perfectly just need time to get used to it.
Regards

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Martinka
Regular MemberPosts: 118
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Re: Reassign focus button
In reply to Erindi1, May 17, 2010

Yeah, there is some learning process, give it time
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