Need to pick people's brains, does snow Reflect IR light? EIR film
Hi guys! Britain is braced for loads and loads of snow, starting tomorrow. Now i fancy taking a roll of EIR out of the freezer and using a few exposures, cutting the used strip away in the dark to develop, and placing the film back in the freezer. However I am having trouble finding out if snow reflects IR light as it does all visible light, or if it absorbs some or all IR light. The films sensitivity seems, according to kodak peak around 750nm and roll off towards 900nm giving me 680??? - 900nm leeway. I can find very little on the internet that gives me a conclusive answer, and do not want to defrost a roll of EIR if i am wasting my time. Got a roll of velvia, delta 100 and ektachrome 100D (and a Hi8 camera, one with the biggest and sharpest lens on any videocamera i have had, was given to me and cannot afford a high end camcorder but that gives a great picture with professional grade ME tapes and does not pixelate on a large TV like most digitals below a high price range and has all the manual exposure, mic sound source, and focus controls), all ready as me and a couple of friends are going to be taking many pictures of Bath in the snow, as i have never seen bath covered in snow, we are going to make a shoot of all the mayhem that will ensue and a snow covered bath. i plan to go to high points, i know a few great ones, one of which nearly got me into a spot of bother yesterday as i found the spot. And i want to get photos of key areas around Bath using the EIR and Velvia and B/W. I will be using an orange filter for the EIR and will bracket, and will process it as soon as I return home in E6. Have never used EIR, i had planned to shoot some of one of the rolls during my last family visit, but they didn't arrive in time! I know it has to be loaded/unloaded in darkness though! And will be switching off all heating before loading it into a tank.
But the £1+ a shot question, does snow reflect or absorb any, some, most or all IR light? As if it does like it does visible light, then its worth it, if it absorbs IR light, it will be a waste of money and film.
Any help will be great!
Last edited by jm94; 01-17-2013 at 03:05 PM. Click to view previous post history.