> > > Yes - Canon has. One of the personal functions on the EOS 1v > > enables a > > > "trap focus" setting. Focus on a spot (remove the target focused > > on. > > > Use the big brother to your remote to hold the shutter open open. > > It > > > won't go off until something again comes into focus. Battery > > companies > > > like this PF. And, there's another PF to reduce shutter lag time. > > > > If the 1v has this then I just might have to think about the upgrade. > > For birds in flight (flypast) that is exactly what I want ... ideally > > on an RT / RS ;o) > >Far as I know it's exclusive to the 1v as a Personal Function. For >birds it sure sounds like it would beat throwing electronic devices up >into the air. :-) > > > > Has anyone here used it? Neither have I used it but my friend has and as I recall it did not work very well for birds in flight (birds coming to nest). Don't remember the reason exactly but I quess the following reasons (some have been already mentioned by others) might be true: - Only triggers the shutter release (fires the whole film if in continuous and if number of frames not limited). In my opinion it should fire only as long as in focus. - Eats batteries (shutter release needs to be kept down). - The shutter lag time may be still too long (bird gets out of focus). But as I said, no first hand experience. With external "light beam" triggers you could have some advance (is this a right English word?) to compensate the shutter release lag. Vesa _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
