50D High-speed hiccup

Nifkin

Nifkin

Messages
1,267
Name
Simon
Edit My Images
No
Hello,

Was just shooting in Jpeg, with my camera set to the higher of the two continuous shooting modes, i.e. 6.3 frames per second for continuous bursts, with the AF set to servo. I had a cricketer friend run towards me, as if bowling (no ball, of course ;)), and I fired of between 10 and 15 shots. However, at one point the continuous shooting seemed to, well, hiccup, insofar as there was a small lag between shots at one point, disrupting the continuity. I had the friend do the same run up again, but the second time it was fine. Is it unusual for this to happen? Or could it be because I was using the servo focus at the same time (which should be fine, but I guess it puts an extra strain on the camera's resources)?

Should I have my cam looked at? :thinking:
 
sketch145 said:
Could perhaps be the memory card you're using. What speed/brand is it?
Click to expand...

Bang on the nose, I reckon! Hadn't thought of that! It's a Bytestor 8GB 40x, far from the fastest in the world, but good value. How many high-quality Jpegs can the 50D hold in it's buffer before transferring them to the card? (I would look at the manual, but am at work at the mo!)
 
Well servo focus is the only mode to use for a moving subject like that. It's highly likely that the system just lost AF for an instant due to insufficient detail in the AF square to obtain focus - easily done.

Under normal circumstances the shutter waits for focus to be achieved for each shot, although you can disable that in the custom functions, but I'd leave it set as it is. It's highly improbable that there's anything wrong with your 50D I reckon, particularly as the second set were OK.
 
I see. Dumb question, but I take it that the high-speed shooting modes don't in themselves disable the AF from having to lock onto the target before a shot can be taken? i.e. the high speed shooting will be suspended until correct focus is attained?
 
IIRC you need to look at the custom settings - you can give priority to either the shutter firing (regardless of focus being achieved) or attaining focus first.
 
CT said:
IIRC you need to look at the custom settings - you can give priority to either the shutter firing (regardless of focus being achieved) or attaining focus first.
Click to expand...

I'll check that out when I get home, thanks!
 
You must log in or register to reply here.
Back
Top