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Kenko - Kenko Pro300 DG Firmware Upgrade - 2 Thumbs Up!

Canon SLR Lens Talk Forum: Digital Photography Review -
Just got my TC back with the firmware upgrade. No problems whatsoever with the newer Canon lenses.  The upgrade makes the 300DG functionally equivalent to the 300DGX. 100L and 70-300L snap right into focus, although a little slower in low light, but not appreciably so.

I'm going to try and stack the DG and DGX and see what happens tomorrow!

Here are some samples straight out-of-camera (70-300L + upgraded DG):
Date: Apr 14, 2016    Labels: Kenko


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