I recently bought a used IR-converted (720nm) Panasonic G2 and have been experimenting with it. It was converted by Spencers and the conversion was optimized for the 14-45mm lens it came with. It focuses that lens perfectly just as it perfectly focuses all my telephoto lenses (45mm, 75mm, etc). However, I noticed that my lenses which are wider than the 14mm end of the 14-45 won't focus to infinity. The Rokinon fisheye won't get anywhere close to infinity, and even the Panasonic 14/2.5 prime, which is a bit wider than the 14mm end of the kit zoom, won't quite focus to infinity although it seems to get to about the hyperfocal distance. The really interesting thing is that the 14-45mm zoom, which has great edge sharpness on my other MFT cameras, has poor edge sharpness on the IR-converted G2, while the 14mm prime that doesn't quite focus to infinity has good edge sharpness on both the IR-converted G2 as well as my other cameras. The net result is that for the G2-IR camera, the overall performance with the 14mm prime is a hair less good for the center at infinity (since it doesn't focus to infinity) but better everywhere else when compared to the 14-45mm zoom for which the camera was optimized at the time of conversion. Here's an example showing the soft edges and corners with the 14-45mm zoom at 14mm and f/5.6: https://farm9.staticflickr.com/8170/8069211355_52710eb2a8_k.jpg Here's a test shot of the zoom vs the prime, both at 14mm and f/8 (warning, full-res files). I'm not disappointed - I got a great price, and the performance with both lenses is more than acceptable. In fact, the performance with the 14mm prime was surprisingly good to me. However, this is my first IR converted camera, and I was wondering whether these types of issues are normal for converted cameras.