I dont get it. - DPChallenge Forums

Pentax DA 18-55mm f/3.5-5.6 AF

02/15/2004 11:54:38 PM · #1

I dont get it. My camera, f717 has a portrait mode. It says the aperature is 2.4 and the shutter is 1/80 of a second. I was shaking my camera ALOT and the picutre came out razor sharp. I conducted a few more tests, taking pictures as I am moving, 1/80 sec, and the pictures are still razor sharp. I am using a external flash, hvlf1000. (the one sony recommends). Could this have something to do with it? Maybe someone can help explain this to me.

faidoi

Pentax K10D

02/15/2004 11:57:17 PM · #2

Razor sharp on the cameras lcd or on your computer moniter?

Canon EF 400mm f/5.6L USM

02/16/2004 12:00:27 AM · #3

both. I checked the exif on the comptuer and it showed a 1/80 shutter, even though I was shaking the camera violently.

Refracted

Canon EOS-50D

02/16/2004 12:07:06 AM · #4

the flash takes place in a very small part of your total open shutter. the flash will effectivly "freeze" the action there. for the rest of the shutter, light will still come in, but it'll be so much lower than the flash's light, that you wont be able to notice it (sometimes, if the ambient light is strong enough, you'll get a ghosting effect around the subjects, from the camera moving).

Canon EF 400mm f/5.6L USM

02/16/2004 12:09:07 AM · #5

so should i enlarge the image, to see if theres any "ghosting?"

Refracted

Canon EOS-50D

02/16/2004 12:10:25 AM · #6

well, just look at it at 100%, and if you dont see any there, it would mean that the ambient light wasn't strong enough to affect the final image..