LEE FILTERSgreenspun.com : LUSENET : Large format photography : One Thread
There are two types of b&w lee filters advirtised in the b&h source book one type sells for 70 bucks a filter the other sells for 14 bucks.Both types are the colors (ie yellow #8 etc) and same size 4x4. Does anyone know the difference? thanx Josh
-- Josh Simpson (firstname.lastname@example.org), February 28, 1999
The two types are Resin and Polyester. Resin filters cost more, and are relatively "heavy duty". I believe they are about 2mm thick and rigid. They can be cleaned. A number of filter types only come in resin (like grad filters).
Polyester filters are much less expensive, and more fragile. I believe the raw filters are about 1mm thick, but you can put them in frames so they will fit a 2mm slot.
Both are suppose to offer similar optical quality.
-- Larry Huppert (Larry.Huppert@mail.com), March 01, 1999.
The less expensive filters are as thin as film (<< 1 mm). Normally, you would mount them in cardboard holders. Unlike resin filters, they cannot be used in front of a polarizing filter (i.e., subject, polyester filter, polarizing filter, lens).
I purchase these filters when I'm uncertain about how frequently I'll use a filter or whether I'll even like it. Once I see that I'm a regular user of the filter, I purchase a resin version. My personal experience is that they are more scratch resistant than the resin filters.
If you don't use a polarizing filter much, these would work well for you.
-- Bruce M. Herman (email@example.com), March 01, 1999.
Just to expand on the previous note. Polyester filter cannot be used in front of a polarizer, but they can be used behind a polarizer.
The ordering would go: Subject -> Polarizer -> Polyester filter -> Lens -> Film
-- Larry Huppert (firstname.lastname@example.org), March 04, 1999.