OK just a bit of fun.
How slow have you shot handheld and got an acceptably sharp image.? and if you have the image postable i'm sure many would like to see it
My guess would be that the champions in this would be either the 17-55 or maybe the 24-105.
OK more points awarded for the longer focal lengths and lower ISO/smaller Fstops
I think 1/4 or maybe 1/3 with the 24-105L on a 5D. I will try to dig up a photo when I get home later.
Of note, I seem to remember getting the 70-200 f4 IS + 1.4x on a 40D (so 448mm f5.6 equiv) down to 1/10 or so with monopod. The IS on that lens is excellent.
At 24mm, I can do 1/3sec, with my 70-200 f/2.8 at 200mm, ~1/60sec.
It really depends on the weight of the lens. And I'm not that strong with a bad back.
At 24mm (full frame) I can get sharp shots at 1/2 a second. Bracing myself steadily against a wall or something, I've gone as long as a full second with excellent results. Obviously, the subject needs to be stationary....
300mm at f4, 1/20 sec, ISO 800. Flash fill at -1 2/3 stops. Bamboo lemur, Madagascar. It was so dark, that all I could see was brownish fur. The light level was so low that color vision was beginning to fade. Light level was too low for autofocus, so I had to resort to manual focus, but could barely see the focus screen. I was astounded to see this picture, showing gray face and reddish brown cap. I could not see this coloration difference with my eyes at this low light level.
