pixelmaven wrote:
Honestly, a screw on filter doesn't do the work! I've tried that and the best way to get 590nm results is with a converted camera. That way both the white balance and focus is preset once the conversion is made. You will work twice as hard to get any results with an R72 (Hoya) filter and not be half as happy! I bought several converted cameras on eBay, both with the 590 IR filter and am much happier for it.