On Mon, Oct 22, 2012 at 7:28 PM, Paul Stenquist <pnstenqu...@comcast.net> wrote: > > On Oct 22, 2012, at 6:16 PM, Anthony Farr <farranth...@gmail.com> wrote: > >> On 22 October 2012 14:30, Larry Colen <l...@red4est.com> wrote: >>> 1) Taking photos from a moving pony cart can be challenging. Not so much >>> for camera motion blur, which can be compensated for by a fast shutter >>> speed combined with shake reduction, but because the bouncing up and down >>> makes it very challenging to compose a shot. >>> >>> 2) This is exacerbated when the sound of the 18-250 focusing sounds to the >>> horse like the noise that means "go faster". >>> >>> 3) Taking photos of a hawk flying overhead from a moving pony cart is >>> nearly impossible. >>> >>> 4) Taking photos of said hawk, when standing on the ground with the 18-250 >>> works a lot better with manual focus and a split prism focusing screen than >>> it does with auto focus. >>> >>> -- >>> Larry Colen l...@red4est.com sent from i4est >>> >> >> How autofocus works with sport, action, wildlife, etc: >> >> "Oh, you want to take a shot right now, do you? Just give me a second >> or two while I check my full range of focus, just in case there's a >> point where things are sharper. Wait, I'll check again, you can never >> be too sure, can you? There, I bet that shot of empty blue sky is >> sharper than anything Canon could've made." >> >> Grrrr! >> > > Don't know what focusing method or lens you're using, but with an SDM lens > and single-point autofocus, my camera moves right to the spot. Can't remember > last time I experienced that kind of autofocus sawing.
I agree that normally with single point it just goes straight to the optimum point. But lowish light and/or low contrast: whee! See-saw city. Happened to me in my fave jazz club on Friday. I gave up and manual focussed and got some terrible results. I have to check the diopter setting again. :-( -- -bmw -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.