C'mon guys...just stop, okay? I'm trying to save up for an R3 or maybe a possible R5s and you're just pushing me to buy that 2x TC! Seriously folks, great examples of what is possible with the 100-500 + 2x TC combo. I've got a rental coming in time for this weekend so I can test drive it. Also renting the RF 800mm which I'm going to take for a quick spin, but mostly my son is interested in that one. Of course I'll play for a little too.A Longtailed Tit appeared in our garden in the evening sun after a very rainy day. I had the 100-500mm + 2x extender with the light behind me, and got a level of detail at 9m from the bird I had never achieved before. The AF is a bit sluggish for BIF but for static birds the eyeAF just latches on at 1000mm f/14. DxO oversharpens this combination at its standard settings with the the lens at 600-1000mm, and I dial down the sharpening otherwise it looks unnatural for my taste.
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