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Sigma 100-300 EX F/4 replacement for Canon FF

Started Jun 6, 2015 | Discussions thread
Steve Balcombe Forum Pro • Posts: 15,582
Re: Sigma 100-300 EX F/4 replacement for Canon FF

Your Sigma is definitely performing poorly, though whether it's faulty or if that's just the way they are I don't know.

Like another poster I have the 70-300L and 100-400L II. They are both superb, practically faultless. I use the 100-400 much more than I ever used the 70-300 but that's because most of my subjects are wildlife so I make full use of the reach. A few days ago I had occasion to pick up the 70-300 and it was a joy to use a smaller, lighter lens again - if you only need 300 mm then the size and weight give it a definite advantage.

Having said that though, your Sigma weighs about 1.5 kg (I don't have the specs of your exact model) and the 100-400L II is only a fraction more at 1.57 kg.

Even without considering the reach, the 100-400L II is slightly the better lens - better close focusing and Mode 3 IS are both in its favour, and subjectively I think its AF performance has the edge too. If you can use the reach, it's the right choice; if you don't, and you want to move to a lighter lens, the 70-300L is close to perfect.

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