There are many "shades" of infrared filters. Different manufacturers have filters that may give similar or different results to the Hoya R72. For example:
http://tinyurl.com/bq7zq http://www.schneideroptics.com/filters/filters_for_still_photography/infrare d/ If you want ~the same~ results, use the same filter. FWIW, over the years I have used a variety of filters for infrared photography. Shel > [Original Message] > From: herb greenslade > I have one question about the filters used. It would seem that the Hoya R72 has been the filter most used and recommended. Is this > because it is the most effective of the available filters? Or can other filters, such as the Cokin 89B or the Ilford SFX filter have the > same results? > > Has anyone used a filter other than the Hoya R72?
