Originally Posted by neuroanatomist
Say that again, it seems that in Great Brittain it's even worse [:P]
Originally Posted by jonesejm
I have shot some hockey games myself with the 70-200 f4L and my friend used the Tamron 70-300 super cheap lens at the same game. While the range of 70-300mm was better. It also had quite some negatives. But that's another lens than you're looking at.
I really liked my 70-200 f4L while it was sharp wide open. I used it at f4 without a doubt. I assume you live somewhere in Great Brittain so the weather is probably much the same or even worse than here in the Netherlands. Meaning a lot of grey weather [:S] Therefor f5.6 is not advisable at all! At least for sports that is. The IS system is practically useless for the hockeygames, but it might be better for the landscapes and the waterfalls though.
However when you also bring a tripod you could probably live without the IS system.
Right, now if we take a look at the ISO charts of both lenses we can make a few conclusions:
Originally Posted by jonesejm
Yes definetely. When you view the sharpness of both lenses zoomed out to their maximum and aperture is wide-open. The 70-200 is by far more sharp than the 70-300. Of course stopping down helps, but the biggest improvement is in the centre.
The 70-300 seems to be quite soft and with very unsharp midframes and edges, while the 70-200L is definitely better in this regard.
When you compare both lenses at f8 and f11 (typical landscape apertures I think) you can clearly see a difference in sharpness. And for landscapes it's nice to have an overall good sharpness.
My vote is with the 70-200 f4L, since it's great with sports and it has a better aperture and more useable sharpness overall. However it does lack IS, so I hope that's not a big dealbreaker for you.
Jan