Just got the adapter today and have been playing around with Nikkor 35mm f/1.8G DX lens. The adapter fits snugly both to the body and lens, and handling is a pleasure. The "LOCK <--> OPEN" barrel controls the aperture opening. It's a smooth ring, no "clicks" as you might expect from the lenses with manual aperture control. One question: Other than the lens wide open at f/1.8, and minimum aperture of f/22, there is really no easy way for me to tell what aperture I'm setting, right? I mean, I can kinda guestimate looking at the size of the opening, but that's about it? Well I'm sold on this combo. I took the E-PM1 with the Nikkor 35mm f/1.8G lens to the park this afternoon with my kids and some friends, and took a bunch of photos. It handles very well--the lens barrel sits comfortably in my left hand, and manipulating the focus ring feels natural. The effective focal length makes it for a great playground lens. I was seriously considering getting the Olympus 45mm f/1.8 lens next, but with this combo, I think I can put that on the backburner and get the Panasonic 20mm f/1.7 first instead.