I'm not Michael (obviously), but I'd be really surprised if one could modify the DP2M for infrared use in the easy manner that is available for the SD1. The DP2M is an enclosed body with eensy screws that I think you'd have to be a watchmaker or camera repairman to want to fiddle with. The internal infrared-blocking filter in the SD1 is mounted in a frame (right in front of you when the lens is removed) and is easily popped out. I understand it is designed this way to facilitate cleaning the sensor, meaning Sigma actually expects owners to do this! The filter itself is very very thin and thus quite fragile, so I recommend care and caution in doing this. As the body of the DP2M is not intended to be opened, I would expect the filter to be more permanently installed. Also, I think you'd be frustrated trying to make out an image on the back screen. You need to use an external filter that blocks visible light. If it blocks everything, there is nothing to be seen, and you have to point the camera "blindly" and just hit the shutter. (This has actually worked fairly well for me, as you have a sense of the spread you are going to get in your image by knowing the focal length of the lens. Or you can mount another camera on your tripod with the same effective focal length -- and use that to level and frame your image -- then substitute the camera set up for infrared.) If that external filter admits a small amount of visible light (as one of my filters does) then, with the SD1, I put a black cloth over my head and the rear of the camera (a la a large format view camera), and you can then see barely enough in the optical viewfinder to frame the image. I think the DP2M's back screen would be too hard to read, under these conditions, to do this. Maybe Michael knows something else about the DP2M from his own explorations or any conversations he has had with Sigma. These experiments can be quite a bit of fun! And what innocent fun to boot! (Playing with infrared on a camera is a bit like being a kid again! The green summer scenes end up looking like they were taken in the middle of a winter snowstorm.) --Barbara