I don't really know what to say other than I am completely-freaking-ecstatic. I recently purchased an OM System 50mm f1.8 for $12.50 AUD off ebay, and an adapter for $16.95 AUD for my Olympus E-420. Now, because of the 4/3 sensor being a 2x crop factor, that means that the 50mm f1.8 becomes a 100mm f1.8 lens. That's a damn fine focal length and aperture for less than $30 Aussie bucks. I just put it together and tried it out...can anyone say Depth of Field? I'm talking easily distingushable Depth of Field of a few millimetres. My wife has some fake roses (made of material). I can literally focus in on the strands with the remainder of the rose out of focus. It's so versatile, you can stop it down and get more depth of field, or position yourself at different distances from your subject to make it more versatile. Anyways, I'm mainly writing because i'm so overwhelmed by the performance of a 70s lens on a 2008 model camera for under $30. Now i'm pondering purchasing the 50mm f1.2 which usually goes for $150 AUD, or some shorter focal length f2.8 primes. I just can't believe the amount of value a $16.95 adapter has added to my camera. Sorry for the hip hip hooraying, I just had to share it with someone. hehe.