Friday, July 24, 2015

Metabones Speed Booster Auto Focus - Finally!!

Prelim report on Metabones Speed Booster update with autofocus for Canon lenses (on GH4):

EF-L 24-105 - works beautifully. I think this is my new happy place!
EF-L 20-35 - check.
EF 50 f/1.4 USM - check.
EF 40 f/2.8 pancake - check (and a great, compact combination!)
EF 85 f/1.8USM - check.
Unfortunately, my 35mm f/2 (not USM) doesn't respond, and the 75-300 IS USM makes the camera freeze.


Bottom line: Hooray!!!! The AF is quick and accurate.

In all functional cases, autofocus engages when I first bring the viewfinder up to my eye. This is probably a setting I need to disable somewhere in the prodigious menu system of the GH4.

Note: This is all with the (now discontinued) standard 0.71x Speed Booster. There are two other versions now available: the ULTRA (still 0.71 - not sure what the extra is there) and the XL at 0.64. I'm thinking seriously about picking up the XL. If you're really bored, ask me about the math of lens equivalents...