Have 7D - never used the 70-300 but between 2 of us have
Canon 100 IS, 70-200 f/2.8 IS & non-IS, 300 f/4 IS, 100-400
Sigma 150-500, 500 f/4.5
We had Canon 1.4x Extenders and got rid in favour of Kenko 1.4x. QI is as good and it fits *all* my lenses except WA. And use AF with a simple workaround
Personally, had much better shots from the 150-500 over the 100-400 (and best from the 500)
Quote:
Originally Posted by Ron McGill
(shallow depth of field)
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This suggests 70-200 f/2.8 for max flexibility (adding a 1.4x TC if required) - or something like the Sigma 500 f/4.5
Quote:
Originally Posted by Ron McGill
Is build quality of Canon L series preferable to Sigma 400/500mm super telephoto lenses?
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The 100-400 is undoubtedly a better build quality than the Sigma 150-500 - in fact it's built like a tank! Which is presumably what tipped it to 'L' status - the Sigma has better, if noisy, OS and IMHO although best used no wider than f/8 gives better results than the Canon (although latter gives an extra stop). I actually prefer the push-pull action for fast zoom change!