• 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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Conclusions in the video. It is a long video but I compared these lenses over a period of several months. Cliff notes image quality is very similar. Giving away the 400 F5.6 at 1000 subs