100-400 vs. 70-200/2.8L IS mk1 vs. 70-200/4 IS

[Daniel Browning]

My passion is nature photography

Which one you get first should depend on what part of nature photography you consider most important. If it's wildlife (the more reach, the better), definitely go for the 100-400. Otherwise get one of the 70-200 lenses, because they are much better than the 100-400 in the overlapping range. As for f/2.8 vs f/4, that's a difficult trade-off between cost and flexibility.

Also, if anyone would mind sharing some pictures taken with the 70-200/2.8 IS ver1 and the 2x extender, that would be appreciated, too.

70-200 f/2.8 L IS + 2X TC @ 400mm f/5.6 vs 100-400 @ 400mm f/5.6


70-200 f/4 L IS @ 100mm f/4.5 vs 100-400 @ 100mm f/4.5