Quote:
Originally Posted by Weebl
I find myself cropping the 300/1.4 combo more than I want and a 400+1.4 might do it for me vs the 500.
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I played the game of trying various 1.4x extenders with the 400/5.6. Though I used a Tamron AF non-reporting extender to maintain autofocus it was always kinda slow and unreliable. Eventually I gave up on AF and just used a Canon EF 1.4xII that was a little bit sharper.
Short summary is that 400 + 1.4x gives you a decently sharp manual focus 560/8 with no IS. That proved to be an unworkable combination for me unless I was on a firm tripod support - and even then I had to be very careful to get decent results. Ultimately I was never satisfies with my results longer than 400mm until I got an image stabilized 500. I realize that's an expensive solution, but that's really the only thing that worked for me when the 300+1.4x wasn't long enough.