Re: Auto-focus on digital SLRs.

When it hunts (zooms in and out), what are you photographing at the time? 
An image with very little contrast?  A low light shot?  Is the subject 
moving?

Also, what focusing mode are you using?  AI Servo, AI Focus or One Shot?




"Steven Green" <steven.green30@[EMAIL PROTECTED]
> wrote in message 
news:EdFvj.249$Hd.83@[EMAIL PROTECTED]
>I am new to the auto-focus world, both my film cameras are manual focus.
> I just got my hands on my sister's Digital Rebel XT (DRXT) to just learn
> some basics of the camera and see what features I really like.
>
> One thing I am developing a disliking for is auto-focus.
> On the DRXT it sometimes goes into fits zooming in and out then refuses
> to snap a picture. I find the auto-focus slow and a pain in the ass.
>
> I understand that the speed of auto-focus can be a function of the lens
> and the effectiveness on the amount of light (if I understand this
> correctly)
>
> Other than things like numbers of points and speed of lenses I don't see
> much on the effectiveness of auto-focus.
>
> How do the hi/low end cameras differ for canon?
> Is it better/worse with other brands?
>
> If this is representative of the other cameras as well I think I may add
> weight to the quality of manual-focus for my future purchase and largely
> ignore auto-focus.
>
> Thanks,
>
> Steve