Archived posting to the Leica Users Group, 1999/09/29
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Some newbie type questions, so advance excuses. My mail order polarising filter arrived this morning, a Heliopan E39 CIR Polarizer as recommended by the dealer. I was somewhat surprised to see that it was tinted (2.5 factor). Although my photo books group this type of filter with NDs, in my innocence I had expected it to be clear, but never mind. The filter revolves around a fixed ring and there are numbers (1 - 10) to record the correct setting. There is no zero mark on the inner ring but I've screwed it onto my 50mm Summicron and made a mark on the top of the inner ring. Presumably when I want to use it all I need do is to hold the filter up to my eye note the setting and screw it onto the lens. (I know Leica have their own solution to this involving some sort of swing-arm contraption, but it sounded cumbersome as well as horrendously expensive at around 250 GBP). I'd appreciate any comments on whether I've got this right and on how useful this type of filter is in practise. Amongst other things I'd hoped to use it to reduce reflections in head-on window shots but according to the instructions the polarising effect works best at an angle. Regards Roger Underwood - -------------------- roger.aru@cwcom.net