D H Wright
DSC_2098Edit
Photo shows Panasonic G1 prepared for my C mount experiments. A piece of insulating tape isolates the electrical contacts in the camera throat. The piece of card with a 1" diameter hole serves as a light shroud. I simply place the rear of the C mount lens through the hole in the card and hold it in place in the camera throat after adjusting the focus and iris setting. I find best results are achieved with something like f11 to get a good depth of field as it is very difficult to get perfect focus and registration. The two smaller lenses are a Computar 12.5mm f1.3 and a Cosmicar Pentax 12.5mm f1.4, both designed primarily for cctv use.
DSC_2098Edit
Photo shows Panasonic G1 prepared for my C mount experiments. A piece of insulating tape isolates the electrical contacts in the camera throat. The piece of card with a 1" diameter hole serves as a light shroud. I simply place the rear of the C mount lens through the hole in the card and hold it in place in the camera throat after adjusting the focus and iris setting. I find best results are achieved with something like f11 to get a good depth of field as it is very difficult to get perfect focus and registration. The two smaller lenses are a Computar 12.5mm f1.3 and a Cosmicar Pentax 12.5mm f1.4, both designed primarily for cctv use.