On Tue, Aug 17, 2021 at 07:41:12PM +0200, Alan C wrote: > The South African Aerobatic Championships is currently on in Phalaborwa with > plenty of Photographic opportunities. I've tried everything but just don't > seem to be able to focus on fast moving aircraft at height. I get close with > MF but AF.S?? AF.C are hopeless. Perhaps someone can enlighten me? Perhaps > screw drive is too slow? I've tried the K5 with the HD 55-300 @ 300mm & the > Sigma 170-500 DG @ 500mm. I can focus just fine on the quarter moon!
Are you sure it's focus that is your problem? A plane flying at 250mph (which is what the faster aerobatic planes seem to be capable of) will move over a foot in 1/250 of a second - more than enough to blur the shot. If you haven't had a lot of practice panning to keep your target relatively stationary in the viewfinder you're going to see quite a few fuzzy shots. While you can elimnate much of the motion with higher shutter speeds you then end up with shots that look strange because the propellers appear to be almost stationary (e.g. http://www.panix.com/~johnf/temp/FatAlbert.jpg) -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
