DanC.Licks
AKA Daniel Bradley
Did some focus speed comparisons today. I set up the camera so I could go back and forth from two targets, one 10 and the other about 40 meters away. The positions were blocked so I did not have to look through the view finder, just rock the camera up and down after each shot. I also wanted to see how much juice the Sigma consumes in focusing, so IS was off and no pictures were displayed, only the info panel on the screen. Silent shutter. Focus priority was off, so it would only fire if the shot was in focus.
I shot first with the Sigma and shot until the first green bar on the battery indicator went out, still two showing. Original Oly battery, about three years old.
I got 1018 shots (!) , with the average time between shots 3 seconds. I didn't run the Canon as long, only about 380 shots, but the battery was still showing full. Average time between shots was 3.9 seconds. Neither lens had the focus limiter on. The Canon is faster with it on as it can't get lost looking in the foreground. The Sigma is the same with it on or off. Very seldom gets lost.
Moon tests tonight, though the air does not look all that good. Did some last night, also not really clear, the scope against the Sigma, both with 1.4x TCs, and the Sigma was just slightly less sharp stopped down a stop, but produced more pleasing images, better contrast.
I shot first with the Sigma and shot until the first green bar on the battery indicator went out, still two showing. Original Oly battery, about three years old.
I got 1018 shots (!) , with the average time between shots 3 seconds. I didn't run the Canon as long, only about 380 shots, but the battery was still showing full. Average time between shots was 3.9 seconds. Neither lens had the focus limiter on. The Canon is faster with it on as it can't get lost looking in the foreground. The Sigma is the same with it on or off. Very seldom gets lost.
Moon tests tonight, though the air does not look all that good. Did some last night, also not really clear, the scope against the Sigma, both with 1.4x TCs, and the Sigma was just slightly less sharp stopped down a stop, but produced more pleasing images, better contrast.