Canon EOS 1V

[corrado]

Hi Mike,
many thanks for your suggestion but unfortunately this isn't my case.
Do you have any other idea??
Bye
Corrado.

 

[mike_nunan]

Hi Corrado,

The only thing I can think of that might explain the difference is that in AI Servo mode the camera tries to maintain a lock, whereas in One Shot the lock only has to be achieved once. If the lighting conditions are marginal then it may not be possible to keep the lock in AI mode, but by scanning over the subject you can just about get a lock in One Shot. I haven't noticed this myself, but then again in really dim lighting I tend to resort to flash.

One way to confirm whether this explanation is correct would be to try for a lock in One Shot mode and see how long it takes for the camera to confirm the lock. If you have to hunt around for more than a second or so, then the chances of being able to hold the lock in AI mode are pretty slim.

HTH

-= mike =-

 

[corrado]

Hi Mike,
I agree with your considerations.
Many thanks for your help.
Happy new year.
Corrado

 

[corrado]

Hi.
Has anyone experimented atofocus problems using the 24/70 f2,8 (and/or the 16/35 f2,8) with the EOS 1V body?

My experience is:
setting the Zoom between 24 and 35 (or 16 and 24) and trying to focus a subject placed at an "infinite" point, if you use the 45 autofocus points (automatic selection) usually the autofocus procedure terminates indicating a distance less than "infinite".

May be that such lenses, designed thinking to DIGITAL bodies, are incompatible with the EOS1V body?

Many thanks in advance for your help.
Bye
Corrado