posted June 27, 2017 12:30 PM
Those other ones i got on here are OK, but a nice glass one lets the optimum amount of light through for good projection, hence the need to get one.
-------------------- "All these moments will be lost in time, just like ... tears, in the rain. "
Posts: 1006
From: West Midlands United Kingdom
Registered: Aug 2011
posted June 27, 2017 12:50 PM
Try 35mm camera filters Osi. You can find these cheaply and made from glass. The alternative diachroic glass coloured filers, which are high quality glass, I believe float glass, with a pure colour coating on its surface, but these are expensive.