Re: Auto-focus on digital SLRs.

In article 
<47c0c0bc$0$27300$5a62ac22@[EMAIL PROTECTED]
>,
 dj_nme <dj_nme@[EMAIL PROTECTED]
> wrote:
> 
> Also there is the likelyhood that unless your blank wall or white card 
> has no surface texture (ie perfectly smooth) and/or is illuminated 
> completely evenly (no shadows from any surface texture), there is 
> probably more than enough contrast for a DSLR camera to AF on the 
> surface and also it's enough for manual focus without the aid of a split

> prism and microprism ring on the viewfinder screen anyway.

By real life experience:

There are more than enough walls with inadequate contrast and even 
lighting to fool AF.

-- 
Reality is a picture perfected and never looking back.