AF Servo & Taking pictures of kids/animals


kinetic82

New Member
Dec 20, 2009
92
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Sengkang
#1
Hi, I would like to seek the help of fellow forum users, how to do the following better? I tried taking photos of kids/dogs today and I can't seem to take clear shots of them even though i'm using f2.8 and 1/125.

I'm using Canon 500D with Tamron 17-50 f/2.8

1) How to use the AF Servo setting?

2) Any better way to take pictures of moving kids/dogs?

Thank you all for the replies!
 

jvictor

New Member
Dec 30, 2009
20
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0
Singapore
#2
Hi, I would like to seek the help of fellow forum users, how to do the following better? I tried taking photos of kids/dogs today and I can't seem to take clear shots of them even though i'm using f2.8 and 1/125.

I'm using Canon 500D with Tamron 17-50 f/2.8

1) How to use the AF Servo setting?

2) Any better way to take pictures of moving kids/dogs?

Thank you all for the replies!
-----------------------------------------------------------

The focus speed of a non-USM lens is not good enough for kids.

Had been trying very hard to get a sharp picture of my kid(while moving) with 500D + Tamron lenses ... Never succeeded.

Now, I have upgraded to 7D & USM lenses. Quite difficult to find any OOF images on AI Servo, now.
 

zelot

New Member
Jul 19, 2004
335
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0
Singapore
www.flickr.com
#4
Hi, I would like to seek the help of fellow forum users, how to do the following better? I tried taking photos of kids/dogs today and I can't seem to take clear shots of them even though i'm using f2.8 and 1/125.

I'm using Canon 500D with Tamron 17-50 f/2.8

1) How to use the AF Servo setting?

2) Any better way to take pictures of moving kids/dogs?

Thank you all for the replies!
Animals/kids should be still alright. What's r e settings you used?
However, if its kids/animals that are running towards you, ur current lens AF speed most prolly will not be able to keep up.

For that, u can look at other usm lens, not necessarily the 17-55 one but 17-85 (abit soft) or 15-85 (other members in cs did mention its quite good but did not tried that b4)
 

Jul 22, 2008
991
0
0
fallenphoenix.multiply.com
#5
I'll advise u to read deeper into AF servo. If u have tracked the subject initially using the center af pt, then it could be the lens af speed limitation. Otherwise u should be able to focus it. My dance pics re focused as long the tracking didn't focus on the background instead. I doubt ur kids move as fast as the dancers....probably dog might. Do allow the center af to track ur subject for a while.
 

kinetic82

New Member
Dec 20, 2009
92
0
0
Sengkang
#6
Ok guys, thanks! i will try again.. hopefully its not the lens issue..
 

Dream Merchant

Moderator
Staff member
Jan 11, 2007
9,660
6
38
#7
Moving kids and animals pose some of the most challenging situations to any photographer and AF system.

While I'm not that familiar with your lens, I would suggest that 1/125 and f/2.8 is no where close to what's needed to get pin sharp photos.

Depending on the speed/direction and predictability of the course of movement of the subject, you may have to up your ISO, hit a minimum of 1/400 and close down to about f/4-5.6. But these figures are not cast in stone because we have absolutely no idea what your subject/situation is. We don't even know what sort of light you're shooting in, subject and background contrast, how you have set your AF to work or pre-shot techniques.

AI servo does not work best, or at all if you just point and blast. You have to activate focusing, keeping a selected AF point locked on the subject for at least half a second (Canon usually says one second) to give the on-board processors time to gather data, compute and predict focus.

Do a search with headers like 'how to use of AI servo AF' and look up articles on 'how to photograph running children/animals'.

CHEERS!
 

Reportage

Senior Member
Nov 24, 2008
5,785
2
0
#8
It all boils down to how much light you have to work with.

In broad daylight, you can use speed of 1/500~1/2000 even at F20+

At night, having a 2.8 gives a little leeway against increasing the ISO which introduces noise and allows faster shutter speed.

The best way to learn is to practice.
 

Last edited:

3in1c

New Member
Oct 23, 2008
609
1
0
40
East
#9
Your 50 1.8 produces nice bokeh and allow more light. Push your ISO, use available light and you should be fine.
 

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