Outstanding images with this in conjunction with my 300mmF2.8L. Frustrating that it does not work with the 100-400 F4.5L ll USM, while it did work with the original version of this lens, (although this was not consistent). I also own the 1.4x extender. Curious that it works with all of the above mentioned lenses.
I use this lens on my Sony A7R II and it's incredible, not a very detailed review I just wanted to take care of this notification - Trust me though, can't go wrong with this lens if you're looking for something in this focal range and it's tested as one of the sharpest lenses known to man.
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