Adapting Metabones Speed Booster for use with non-Canon EF lenses

[Rungunshoot]

Hi, just wanted to start a topic about using 3rd party lenses with the Metabones Speed Booster.  Their website warns about the possibility of some lenses having protruding rear elements that could scratch the adapter or short out the electrical connections.

 

I don't yet own any EF lenses, so I'm currently using a Rainbow Imaging Nikon to EF adapter.  The lenses I've tried with this are:

 

- 50mm f/1.8 pancake (all manual)

 

- 24mm f/2 AIS (all manual)

 

Camera is a Sony NEX-5n.

 

After my first day of trials, this combo works fine.  My caveats so far:

 

- The Nikon adapter tends to stick to the lens, requiring a manual depress of the delicate release lever in order to unscrew it from the lens.  So I'm just buying another Rainbow Imaging adapter and plan on leaving it on the lens all the time.

 

- The lens focuses a bit past infinity.

 

Other than that, I'm really enjoying the Speed Booster and see no image degradation.  Will be posting sample videos soon.

 

Anyone else tried other lenses?