Originally posted by Billk
Has anyone used a dot sight (like the Olympus EE1 Dot Sight) for bird photography?
How useful do you think they are?
I mostly photograph birds with a DA300mm or DA 300mm plus 1.4TC. Especially at 420mm, it can be a bit hit and miss getting the bird in the viewfinder and an effective aid would be great.
Dot sights are most useful, in my opinion, when dealing with these factors:
-- you are shooting with a long lens that narrows your field of view such that keeping magnified birds-in-flight within that FOV is difficult. Think of it this way: if your magnified bird is taking up most of your frame, it can escape that frame pretty easily. Chasing it sometimes leads to losing it and trying to find it again wastes time and shot opportunities. A dot site's FOV is wider, so your view of the subject includes a larger area around it. Harder for the bird to escape you. Having said that, however, using a sight definitely takes practice and you may want to switch to focus release priority and/or use more focus points.
-- along the lines above, when using an open sight like the Olympus, you can hold the camera away from your eye, thus giving you an expanded view of the sky/surrounding area, using both eyes. This not only helps in keeping your target in view but also allows you to see other potential targets. I'm reminded of a recent shoot where I was doggedly chasing sandhill cranes with the 560 and totally missed the red-tailed hawk putting on a show 50 feet from me. That's what happens when you glue your eye to the viewfinder! (The Pentax sight doesn't help quite as much here because your eye is typically closer to the sight).
-- a more obvious use for red dots is in mirrorless cameras, especially when you're dependent on an lcd or evf for your view. Frame refresh on these can be slow and cause you to lose your target. Additionally, lcds can get washed out in the sun, so it's nice to have an alternate view.
-- perhaps nowhere is a dot sight more useful than when shooting with ultra-magnification like a long lens on a Q. Pop 300-600mm on there and you'll think there are no birds at all! Dot sights, again, provide a more useful FOV. You'll find lots of discussion on sights over in the Q forum.
Hope this helps!