Archived posting to the Leica Users Group, 2005/11/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi Mark: The red filter which I've been using is a number 25. I can't use that very dark number 92 unless I put it on a rangefinder camera. You don't have to worry about the filter factor with the Konica film, just shoot it a f5.6 at a 60th. Jim Mark Rabiner wrote: > On 11/8/05 5:38 AM, "Jim Hemenway" <Jim@hemenway.com> typed: > > >>Hi Mark: >> >>It's great stuff! Works with red AND orange filters. >> >>No metering... just shoot at 5.6 at 1/60th or equivalent... it leaves >>you free to compose. ;-) >> >>Jim >> >> >>Mark Rabiner wrote: >> >> >>>>http://www.hemenway.com/Infrared-Oct21st/ >>>> >>> > Great! Well I've got three shades of filters in 39mm for three of my Leica > lenses kind of my default filter size. > I've got a B+W 090 light red Wratten 25 > And a B+W 091 red Wratten 29 > But my trump card which I've never put to use is a > B+W 092 which looks almost black. I think it took me a month to get it. > "This dark red filer is for black and white infrared films and filters at > light below approximately 650nm. It allows pictures of a pure red image > while making good use of the relatively low sensitivity of infrared films. > Filter factor is approx. 20-40." > > There's one even redder than this. > But I'd have to kill you to tell you about it. > > Mark Rabiner > Photography > Portland Oregon > http://rabinergroup.com/ >