Thanks for the info Eric, I've got a 850 nm filter on order and was wondering if the images come out the camera with no red colour (as with the 720nm filter) like shown in the galleries. I'm looking at getting the D70 converted and not sure to go with 720nm or higher. I would like to get the images like in the IR galleries but with no colour swapping. My thoughts are, if the images come out of the camera with no colour then I would go with the stronger filter and still be able to use the D7000 for the images you saw. Any advice would be much appreciated. Thanks Martin .