I recently did some fairly basic tests comparing a SMC Takumar 55mm, A Nikon E Series 50mm, A Pentacon 50mm, and a Jupiter 80mm with the E400 kit 40-150mm zoom.

There is also a description of last weekend's project: Converting a Hexanon 28mm f3.5 to Four Thirds bayonet.

Here is the link:

http://www.snaar.co.uk/lenses/index.html

There's also a page on my experiences fitting a Katzeye screen

http://www.snaar.co.uk/fourthirds/index.html

and the inevitable photos pages

http://www.snaar.co.uk/snaarp6.html

Hope these are of interest!

Pete