I realize that it will be nearly imposiible to focus on the snow- I'm
interested in focussing on the skier of course.  However, sometimes the
skier is small in the frame, and the AF hiccups and starts hunting.  I
do all of my skiing photography with manual focus right now, because as
soon as the AF starts to hunt I am completed hosed.  Another problem I
have is that the AF seems ok, but it won't lock and it won't let me fire
the shutter.  This especially sucks if I'm shooting at f/11 or something
and I know that the focus is good enough.

-Scott


On Fri, 2004-11-19 at 23:57, Don Sanderson wrote:
> Any AF camera will have trouble with snow,
> AF works by judging the contrast (Difference
> between light and dark areas) of the subject.
> Anything that is all one color with no shadow
> lines or prominent texture or color difference
> to create contrast will be IMPOSSIBLE for AF
> to lock on to.
> Also, anything that is too bright or too dark
> will give AF fits.
> Even the human eye needs to find some kind of
> feature or shadow area to focus on.
> When I want my AF lenses to retract all the way
> to infinity for storage I just point the camera
> at a wall or ceiling that is all one color.
> Fools the AF everytime, causing the lense to go
> from one extreme to the other.
> 
> Don
> 
> > -----Original Message-----
> > From: Scott Nelson [mailto:[EMAIL PROTECTED]
> > Sent: Saturday, November 20, 2004 12:46 AM
> > To: [EMAIL PROTECTED]
> > Subject: *ist D AF and snow?
> > 
> > 
> > I shoot a MZ-5n right now, but the AF has trouble with snow.  I like to
> > shoot backcountry skiing, so you can see how this is a problem for me. 
> > I was wondering how the *ist D AF handles this sort of thing.  Does
> > anyone have experience they'd like to share?
> > 
> > 
> > Thanks,
> > 
> > -Scott

Reply via email to