• UPDATE



    The forum will be moving to a new domain in the near future (canonrumorsforum.com). I have turned off "read-only", but I will only leave the two forum nodes you see active for the time being.

    I don't know at this time how quickly the change will happen, but that will move at a good pace I am sure.

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I bought a 7D three years ago, added a 5D mk III later. Since then I have not touched the 7D but kept it as backup camera. I shoot various subjects, also a lot of sports using the 70-200 2.8 II, Sigma 120-300 2.8 sports and 1.4III converter.
The 5D mk III is really awesome but every now and then I do miss the extra reach. Extra mm for full frame are really expensive and above budget.... Would it make sense to replace the 7D for the Mk II and start using the 7D mk II for sports only? Or would I be disappointed since detail and low light performance of the 5D mk III are better than then 7D mk II anyway?

300mm f2.8 would yield 480mm f2.8 on the 7D mk II
300mm f2.8 + 1.4 converter would yield 672mm f4 on the 7D mk II

Reasons to consider upgrading the 7D: better reach and maybe AF speed (how does it compare to the 5D III anyway??). fps, although dramatically improved in the Mk II is not my main concern. Any thoughts appreciated.