Mon 07-Jan-13 12:08 AM | edited Mon 07-Jan-13 12:59 AM by Betty L
Good advice, Lee. I went out today and shot with the Sigma 1/50-500 lens of my husband's before I saw your post.
First off, I will post two images I shot today. The house finch was taken in my back yard around 11 a.m., bright sun. But I only got a chance at 2 shots before the birds spotted the howitzer sticking through the door and flew for the hills. That shot is 400 ISO, 1/320, 6.3, Matrix metering. The ISO and Matrix was what the camera was set on from a previous shoot and I forgot to change it.
The heron shot is from a nearby lake. I was disappointed in the Sigma lens because it kept chattering to the point I couldn't get focus. I read the manual sheet before setting out and did all the proper things. Turned off the camera before changing the lens OS to on or off. I tried it both ways. I was shooting on a bean bag through my car window, but rested my hand on the bean bag and cradled the lens in my hand. I figured that qualified for OS. The first 20-30 shots it worked like it should. I waited for the OS to settle after depressing the shutter, then took the shot. Later on, it began the chattering thing and wouldn't stop, even when I turned the camera off, then turned the OS off, then turned the camera back on. Drove me crazy. I tried manual focus, but my eyes aren't good, too much astigmatism. Every so often, the lens behaved and I got a dozen or so useful images out of 90. The heron was 1/400, ISO 125, at 450mm, 6.3.