Metabones Speed Booster for FX Lens and DX Body?

[BobbyMurcerFan]

The Metabones Speed Booster looks really impressive. I have quite a few full frame Nikon lenses that I use on APS-C Nikon bodies, e.g. the D5200. It seems like Metabones does not make a Nikon full frame lens to DX body Speed Booster. Is this because there wouldn't be much of a speed increase, or some technical reason? Or perhaps I'm mistaken and there is an FX to DX Speed Booster. Thanks so much!!

 

[sbrenner]

If the flange distance is the same for FX and DX, would there be any room for an adapter?
Or would the optics take care of that....?

 

[treynolds]

Yeah due to the fact that the flange distance for both fx and dx are the same a device like the speed booster would not work. In theory it could work to mount a fx lens on anything with a smaller than the fx size sensor and with a smaller flange distance than the standard fix flange distance.

 

[Samuel H]

And it's not just that there has to be a difference in flange distance: the camera definitely has to be mirrorless. The back element of my NEX-to-LeicaR speedbooster sits at maybe 6mm from the surface of the sensor.

 

[brianc1959]

And it's not just that there has to be a difference in flange distance: the camera definitely has to be mirrorless. The back element of my NEX-to-LeicaR speedbooster sits at maybe 6mm from the surface of the sensor.

Not counting the sensor coverglass, the BFL of the Speed Booster is actually a bit over 12mm. I wish we could get as close as 6mm!

 

[Samuel H]

(it looks like less, but I obviously didn't get any tools in there to measure it!)
(and just so you know it: I'm very very very happy with my speedbooster)