Quote: I got the idea, that 200mm is just not enough...
Nope, 200mm is not enough. I've been shooting 300mm and want more...400?? 500???
That hawk shot is still nice, and I got some good shots with my 200mm, but now the 300 is almost always on the camera, mainly for birds...
I was discussing this with a friend a few days ago, we were pretty much in agreement that if we got 600mm lenses we'd both want 700...
This is a rokinon 75-300 at full zoom, 300mm. Barely pulled these pelicans in enough for a decent shot (but not exceptional by any means). They were maybe 150 feet up.
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These geese were much higher, 200-300 feet, the 300mm got a barely acceptable shot, cropped at 1600x1200 and resized to 1024x768 for web viewing. (both pictures cropped the same) This is just barely acceptable - noisy, very little detail, but it did stop motion...I also had to sharpen both at 20% to clean things up a bit.
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This Cormorant did a lot better, but it was also a lot closer, 75 feet or so, and I managed to get better focus than either of the previous shots too. Same 75-300 Rokinon, f8 I think, same 1600x1200 crop resized. No sharpening used.
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If I can ever afford it, I'll definitely be looking at longer glass, I have several good locations here and a couple of them see lots of water bird action, but they don't often get close. Ducks by the thousands in winter, if the place ever fills up (we need at least 6" more rain) geese all over the local fields, egrets, herons, hawks, eagles and lots of small birds like Kinglets and Goldfinches. It's a blast sometimes. But the 300mm barely does the trick when they are 100 feet away or more...I found out using my 200 it wasn't even close to enough...