Cameras cannot lock on to anything. Like an electronic weapon system in an F18-Hornet. I wish it could. It can only focus on a subject/distance. Then perhaps refocus on annother subject/distance.
Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: Bruce Dayton [mailto:[EMAIL PROTECTED] Sendt: 12. januar 2005 01:20 Til: Herb Chong Emne: Re: *istD AF performance (was Re: Sigma 2.8 Zoom lens comments) There are an awful lot of possible points of focus on a person - ear, eye, nose, mouth, chin, forehead, etc. Locking on to what is exactly the problem. On top of that, they are usually not the only person advancing and arms and heads of people in the aisle can suddenly swing out in between the camera and the subject. And you may have to change focus points rapidly if the subject is tall or short or left side or right side. I don't think it is a question of just good AF. -- Best regards, Bruce Tuesday, January 11, 2005, 4:05:26 PM, you wrote: HC> as far as i am concerned, a camera with good AF should lock on the person as HC> they are at the end of the aisle and easily track as they approach, if they HC> are the only person advancing. they are not moving that fast and the HC> lighting isn't that bad either. i also understand how the AF system can be HC> fooled into locking on the wrong thing first and after that, all bets are HC> off. HC> Herb.... HC> ----- Original Message ----- HC> From: "Bruce Dayton" <[EMAIL PROTECTED]> HC> To: "Sylwester Pietrzyk" <pentax-discuss@pdml.net> HC> Sent: Tuesday, January 11, 2005 10:29 AM HC> Subject: Re: *istD AF performance (was Re: Sigma 2.8 Zoom lens comments) >> Boy, you have me confused. I have shot a lot of weddings, and I don't >> recall action shots being a part of it. If you can't focus follow someone >> walking down the aisle, then perhaps you might consider that action. >> I never use AF for weddings.
