Problems with EF 50mm f/1.2 L and Viltrox EF-EOS M2 0.71x adapter?

Started 5 months ago | Discussions thread
OP davecheng Junior Member • Posts: 32
Re: Problems with EF 50mm f/1.2 L and Viltrox EF-EOS M2 0.71x adapter?

lumenite wrote:

It is reported that Viltrox answered that 50 1.2 and 85 1.2 do not work with their speedbooster.

https://photography-on-the.net/forum/showthread.php?t=1508348

It is interesting that the M43 version works with both lenses.

Oh, that's unfortunate. It looks like Viltrox has known about this incompatibility for over a year and has not resolved it.

The similar, albeit much more expensive, Metabones adapter has an interesting manner of dealing with fast lenses (i.e. faster than f/1.4). For these lenses, the Metabones displays the "pre-boost" aperture, but shoots with the "boosted" physical aperture. The 50/1.2 will show f/1.2 while physically shooting at f/0.9.

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