For your amusement, here's another c-mount lens on a GF1. This is a Meyer 3" (75mm) f/2.9 "telephoto." With the 2X crop factor of the GF1, the field of view is equivalent to a 150mm on a 35mm camera. Unlike the 25/0.95 Angenieux, this lens does not vignette on the GF1. In one of the shots to follow, you'll see an EF 70-200 IS in the background, which gives a good sense of the diminutive scale of this lens. This thing is so small and light I really don't notice having it in my backpack. It also fits with the body into a very small carrying case, unlike my 5D2 + whatever. The pictures to follow include some of the lens and a few samples: one showing the lens to be "dreamy" (aka "soft") at f/2.9 but sharpening up nicely by f/5.6. The sample pics are straight off the camera, into Adobe Camera Raw, and processed into JPG's with no other adjustments at all other than resizing.

Full frame samples. You will easily see which is f/2.9 and which is f/5.6. (By the way, the aperture varies continuously, and is incredibly round due to the large number of blades.

And here are some crops from the centers of the preceding photos.

Finally, here are two 100% crops, from center and edge, of the shot above at f/5.6, separately sharpened up and contrast enhanced in PS CS4.

Almost forgot: Scale comparison.

Nice, I got a kick out of the size comparison.

Yeah, too bad the little guy doesn't perform like the big one. (How could it?)