High quality large filter

**Bob Salomon** · 25-Jul-2005, 12:13

"ach end of the lens alone is five inches dia"

If all you need is a 5" diameter filter Heliopan makes filters in 127 x 0.75 mm screw-in sizes for many types including ND filters. As 5" is probably the outside diameter Heliopan also makes 122 x 1.0 mm filters as well as 112 x 1.5mm.

**Tom Keenan** · 25-Jul-2005, 19:43

Call the guy at Singh Ray. He'll make whatever you want. Good guy.

**Will Strain** · 25-Jul-2005, 20:00

Lee makes several lines of 2mm filter material intended for architectural lighting applications. Many stock pieces from this line would exceed your stated requirements. I'd check that route.

**Richard Ide** · 25-Jul-2005, 22:40

Thank you all.

You have given me several approaches to the problem. I like the idea of using a heliopan filter but unfortunately the front and rear elements protrude .75" from the housing. I will let you know what works.

regards

Richard