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My days shooting sports are over, I'm now officially an old hobbyist (for several years in fact) and am just coming back to photography after a 4 year absence. One of the first things I saw was this new 70-300L. In my bag, I have the old 75-300IS and a 100-400L and thinking maybe just dump those and lighten the bag. Has anyone else been thru that train of thought that could offer some advice.
The 70-300L is pretty awesome (and look at TDP's flare test where it does the best out of 70-200 f/4 IS or not, 70-300 IS non-L and Tamron 70-300VC). That said, if you need 400mm the 100-400mm will for sure deliver more detail to you, 100mm is way to much to make up for and it's not exactly like the 100-400L is terrible. Even the 300 2.8 IS can't be upscaled to match the 100-400L (although the 300 2.8 will do better if you add at 1.4x TC ).
It is sharp even at 300mm wide open edge to edge on FF. It performs, at all focal lengths, noticeably better than any 24-105 I've ever tried (not that that is a fair test, necessarily).
Edited on Jul 25, 2012 at 01:01 AM · View previous versions