One thing I haven't seen mentioned here. The ist D also has an "AF-C" mode. It will continually try to focus on the subject when the shutter release is pressed half way. It WILL NOT lock the shutter, you can fire the shutter whether focus has locked or not. Sounds like the answer to your focus is "good enough" at F11 situation. The AF-C mode is also available on the SF-1n, it's called "Servo" mode there. This mode is the only reason I won't part with my SF-1n. I wish my 5n's had this feature.
Don > -----Original Message----- > From: Scott Nelson [mailto:[EMAIL PROTECTED] > Sent: Saturday, November 20, 2004 10:04 PM > To: [EMAIL PROTECTED] > Subject: RE: *ist D AF and snow? > > > 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 >
