Very impressed for a £30 piece if kit. Nicely machined metal, fits my Olympus OMD and Nikon lenses.
I only have one 14-42 MFT lens that came with my OM-D Em10-3. I have lots of fast Nikon AF lenses so wanted to try some of them out before buying any MFT kit.

Everything is manual with this adaptor.

Manual focus is aided by focus peaking on the Olympus.

Exposure is a little harder. This is one thing I had to find out for myself once I got it, because nobody explained this. You have to work out what exposure is needed, by turning the aperture ring or leaving it wide open and changing the shutter speed. On a “normal" setup, if you change the aperture, you don‘t see it until the photo is taken. With this it is different... as you change the very nice aperture ring THE APERTURE CLOSES, so the viewfinder gets progressively darker as the F-stop goes higher. So you can leave it wide open, compose and focus, then stop it down to the aperture you need, or leave it wide open for nice shallow depth of field and just change the shutter speed.

In all, it is very well-made for what it is, and I look forward to trying some of my other lenses with it.

Example image is with the Nikon 50 AF-S G 1.8