Canon 40D AF drive

Hello,

I was just wondering if anyone knows what the best AF drive option is for marco shots? I've started shooting with an EF-S 60mm + 1.4X+Canon + EF 12 ext tube and was able to get some decent results, but I could not decide which mode is best?

One shot, AI Focus, AI servo?

AI servo does not allow locking on the target, so it's just a guess if shot is in focus or not.

Any suggestions?

Thanks.

For macro like that, I like One-Shot and use the * button to activate auto-focus. Once I have the autofocus near where I like it I let go of the * button and move the housing in and out for fine tuning.

Cheers

James

For macro like that, I like One-Shot and use the * button to activate auto-focus. Once I have the autofocus near where I like it I let go of the * button and move the housing in and out for fine tuning.

 

Cheers

James

That's what I mostly used on my last 8 dives, however, the only part of the shot that is in focus is in the center; around it, it is out of focus, which in the case below it caused the blenny's mouth to look blurry. (the eye is in focus but the mouth is blurry)

http://wetpixel.com/forums/index.php?autoc...si&img=2441