A few reasons actually, one of the main ones being that I hated the push-pull zoom mechanism of the 100-400. However the 70-300 is much lighter (1050g v 1380g) and much shorter (143mm long v 189mm long) than the 100-400, which you would of course expect, however if you don't need that extra 100mm then it makes a significant difference.
I was expecting that response, the push pull is not everyones cup of tea, I just wanted to make sure it was not performance related and going by your post then its not ?
I was expecting that response, the push pull is not everyones cup of tea, I just wanted to make sure it was not performance related and going by your post then its not ?Thanks
I can't say it was performance related but anything I've read says the 70-300 L has better IQ and is sharper, although I haven't made any comparison myself. It also has improved IS, is weather sealed (100-400 only partially) and it's a new design so I would expect it to be an improvement on the 100-400 which is 12 yo. Not knocking the 100-400 in any way but for me the 70-300 is much more pleasurable to use (and carry) and gives as good as if not better results. However if you want / need the extra 100mm then the 100-400 is recommended.
I've shot quite a bit with the 100-400L on my 7D, and while you can get good results, the lens is incredibly heavy and I'm not a fan of the push-pull focus system.
Best combo by far if your doing wildlife on a budget, take a look in the bird section and it's a very popular pairing. Maybe i was lucky having a sharp copy of the 100-400L and knowing how to use it helps
I have the 100-400L and I'm considering the 7D as a backup body.
As a concert shooter, I'm sometimes forced to shoot from the soundboard and the 100-400 has been brilliant for that.
What is the 7d like at high ISO's? That is a primary consideration for me.
The 100-400 with IS on has really impressed me at f5.6. It just shouldn't work for the environment I work in, but the IS has given me some crackers right at the back of the room.
This sounds like a very workable combo for me, provided I can push the ISO to near it's limits!
Great combination and as for the push pull I love it and I find it much easier than turning a lens in and out (usualy go wrong way to what I want and miss a shot) So I much prefer it.
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