BIF- Cropping EF 100-400 L IS vs Tamron 70-300 SP VC Photos ?

Started Nov 21, 2012 | Discussions thread
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Glenn_Sydney
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BIF- Cropping EF 100-400 L IS vs Tamron 70-300 SP VC Photos ?
Nov 21, 2012

Hi folks

I do a bit of bird in flight photography for fun using a Canon 7D. Some time ago i purchased the above Tamron lens. The lens is great for the price (about 1/3 the price of the 400mm canon lens). I tend to shoot larger birds rather than small birds so figured that the 300mm would suffice. i do now find myself often have to aggressively crop my photos, as its not always easy to get close to my subjects. This shows up weaknesses in the lens (and obviously technique). I am now considering buying the Canon EF 100-400 L after all, but only if the quality of the photos is that much better that it will allow the photos to stand up much better to heavy cropping, when I have to do so and result in much better quality images. This is where I would very much appreciate some information and advice from forum members. Obviously, the Canon lens would require a bit less cropping for starters.

Look forward to opinions, particularly based on experience.

Glenn

PS. The focus speed of the Tammy is quiet good. Anyone know if that of the Canon is better ?

Canon EOS 7D
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