Showcase Zeiss Sonnar 135mm f/2.8

callie

Mu-43 Regular
Joined
Oct 28, 2016
Messages
123
Real Name
Eddie
You cannot change the FL. The problem arises from the final optics making an image circle to fit 35mm film. so you are effectively putting a 20" tyre on a 10" wheel! The optical part can be counteracted in part by a "focal reducing" adapter AKA metabones etc. It doesnt change the focal length as the name suggests but gives a similar effect by rearranging the image circle to fit the smaller sensor.
 

RnR

Mu-43 All-Pro
Joined
Sep 25, 2011
Messages
1,237
Location
Brisbane, Australia
Real Name
Hasse
Apparently yes there was a speedbooster made for C/Y to m43! Though it appears to be out of production and cost ~US$500 when it was available (possibly more, I only found an old ebay listing for one)
Note that you linked to the old design. They are still selling the new Ultra design for the CY mount - Metabones®
 

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