My old Metabones MK1 adapter is not suitable for full frame lenses on the new Sony A7s. So in anticipation of the arrival of my A7s I ordered a cheap CommLite full frame autofocus ready adapter on ebay. This adapter (CN-EF-NEX) was only $90 USD so I thought I would give it a try, much cheaper than the metabones.
To be honest I wasn’t expecting much, but now I have the adapter in my hands I am pleasantly surprised. It appears well made and very solid. It even carries a CE mark. It works just fine on my NEX5N and FS700. On the NEX5N I have working autofocus. If the lens has image stabilisation this works too. I have tried a wide variety of Sigma and Tamron Canon EF lenses with it and they all work. Even my new Tamron 16-300mm works with this adapter, this lens doesn’t work with a number of other adapter.
Autofocus is a little slow, especially if the light is bad. Having not used the MK3 Metabones I don’t know how this compares but certainly this adapter works and is quite useable. It’s said to be compatible with full frame lenses on the A7, but as yet I have not been able to test this. The little mounting post is easily and quickly removable, but a real boon on the NEX5N with bigger lenses. For the price, you can’t go far wrong, really quite impressed considering how little it cost.