Single Point or Multi Point AF on Servo?

inlineadam

inlineadam

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Adam
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When using AI Servo, would it be better for me to Use single point AF, or multi-point AF?

GOing up the the MCrae Rally at the week-end.. :)

Thanks in advance folks
 
What camera?
This depends greatly?
Are we talking about groups of AF points on higher end camera or just letting the camera decide what to focus on with a low end body?

With the high end bodies I'd select a lower group, with a low end body -probably single centre point. With a better but older body- the lower centre point.
 
Phil V said:
What camera?
This depends greatly?
Are we talking about groups of AF points on higher end camera or just letting the camera decide what to focus on with a low end body?

With the high end bodies I'd select a lower group, with a low end body -probably single centre point. With a better but older body- the lower centre point.
Click to expand...

20D
 
inlineadam said:
Cheers Neil, how come just Single Centre point?

So that it doesn't focus on spectators etc?
Click to expand...

Single so you're controlling exactly what to focus on (multi point if I remember rightly will focus on the closest it can achieve focus) and centre as its usually the sharpest and most accurate.
 
2 For Single Centre point,....


I'd be interested to hear from any motorsport/sports toggers on here?

or generally anyone else who does alot of rallying :)
 
inlineadam said:
2 For Single Centre point,....

I'd be interested to hear from any motorsport/sports toggers on here?

or generally anyone else who does alot of rallying :)
Click to expand...

I always used the lower centre point for rallying with the 20d. I'm no expert though. I find that you if you're tracking a car round a corner there'll be something of contrast near that focus point, grille, number plate, decals etc.

I don't have many rally photos on t'internet, a few on FB and one blog post.
 
Phil V said:
I always used the lower centre point for rallying with the 20d. I'm no expert though. I find that you if you're tracking a car round a corner there'll be something of contrast near that focus point, grille, number plate, decals etc.

I don't have many rally photos on t'internet, a few on FB and one blog post.
Click to expand...


Think i'll go for single point then. At all the previous grass tests that i went to ( for practice ) i used multi-point and to be honest i was finding the images to be focused on the wrong areas. Single point should solve that problem :)
 
Indeed, definitely go for a single focus point for anything moving.

Personally I use the centre point for general motorsport but I can see the logic for using the lower centre point. Try both and use whichever you find suits your tracking/panning style.
 
Phil V said:
I always used the lower centre point for rallying with the 20d. I'm no expert though. I find that you if you're tracking a car round a corner there'll be something of contrast near that focus point, grille, number plate, decals etc.
Click to expand...

Need to start choosing focus points with this logic in mind. I've never seen the point of using anything but centre but this makes perfect sense, thanks for opening my eyes (to a very obvious use) :bonk:
 
I use 1 focus point - generally the centre point.

I did read though, that having all points active when using AF-Servo is recommended, as it's easier for the Camera to detect movement...

Can't say I've tried it out yet to see if it is any better, but I'm getting good shots with 1 point, so it could very well be down to panning technique :shrug:
 
andyred said:
I use 1 focus point - generally the centre point.

I did read though, that having all points active when using AF-Servo is recommended, as it's easier for the Camera to detect movement...

Can't say I've tried it out yet to see if it is any better, but I'm getting good shots with 1 point, so it could very well be down to panning technique :shrug:
Click to expand...

Don't you mean assist points rather than main focus points? If I remember rightly having all points on means it will focus on the closest item it can obtain a lock on? Which won't necessarily be what you want.
 
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