Archived posting to the Leica Users Group, 2007/07/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]A filter factor of 3X is 1.5 stops loss. Len On Jul 23, 2007, at 3:34 PM, Charlie Chan wrote: > Bob, > > Just shoot TTL. The 3x refers to 3 stops less light - important to > know if you are hand metering. > > Charlie > > On 23 Jul 2007, at 19:25, Bob Shaw wrote: > >> My local Leica dealer (Glazer's in Seattle) is dumping their B+W >> Filter inventory (digital marches on...) so I pawed through three >> large boxes and came up with a B+W ProLine 67mm Dark Yellow for my >> R-Vario Elmarit 28-90 Asph. I couldn't find a 77 for my 70-180 >> but in retrospect, I decided I'd be less likely to use it on that >> lens; the 28-90 is my "on camera" lens most of the time. I have a >> Heliopan Circular Polarizer for both lenses which I use a lot. >> >> Back to Dark Yellow: >> >> According to ilford's website, "A typical yellow filter will have >> a filter factor of 2; the manufacturer will supply the exact >> factor with the filter. Most cameras with TTL metering will >> correct automatically for the filter factor but check the camera >> instruction book". >> >> OK. i get it. >> >> But on the box, the label states "Dark Yellow 3X Coated". >> >> My question is: even though the R8 and R9 read through the lens, >> do I want to open up a stop or two, or go with the internal meter >> reading and just shoot away? >> >> Thanks for any unfiltered light you can shed on this. >> >> Regards, >> >> >> Bob >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information