Do messages get lost? I looked for this one and couldn't find it. Sent this morning. I apologise if this is a duplicate.
Right. They move up 3 inches and down 3 inches 100 times per second. This means they average about 50 feet per second. But, of course, the wings stop at the end of each up and down beat and accelerate/decelerate to the end of the next, so they'd be travelling somewhat faster than 50 fps maybe even 100 feet per second at some stage. I don't think your shutter speed of 1/125 is going to cut it do you? The answer is to make sure ambient light contributes as little as possible to the exposure. In the dark it would be easier, but that only works with bats. You'd also need to make sure the flash duration is short. Circuit changes can be made to some of the older Vivitars (283 for example) to achieve pretty short flashes. But I've seen some very good Hummer pictures with blurred wings. Don William Robb wrote: > ----- Original Message ----- > From: "Tom C" > Subject: RE: Hummingbird help > > > >> I don't quite understand why a flash is viewed as needed when their >> wings typically beat < 100 times per second. It would seem that >> shutter >> speed alone would capture it (though I've shot at 1/250 before and >> have >> still seen motion blur in the wings). >> > > > Flash fires at 1/30,000 of a second. The fastest shutter speed on a > Pentax is more like 1/125 second, or whatever the flash sync speed is. > > William Robb > > > > -- Dr E D F Williams www.kolumbus.fi/mimosa/ http://personal.inet.fi/cool/don.williams/ 41660 TOIVAKKA – Finland - +358400706616 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
