So, I have been doing a fair deal of research and reading on glass types and, setting aside acrylic, in the world of glass proper, three general categories emerged:
- Regular/plain : clear, cheap, ~8% reflection, can cause significant reflection of specific images
- Non-glare or "reflection-control": mid-range price, still ~8% light reflection but scatters/diffuses the reflection so you don't see reflections of specific images, but this can cause a loss of contrast and clarity.
- Reflection-free: very expensive (40-50$ per 11x14 pane), excellent clarity, 1-2% light reflection, maintains excellent contrast and clarity
TrueVue makes a very nice reflection-free glass, but it is very expensive, unless bought in bulk (in which case it is just a little bit expensive). However, I was reading that they recently began distributing "UltraVue" water-white reflection-free glass. It's clearer and truer color than most glass, 1% light reflection, excellent light transmission, and looks likely a little bit cheaper than museum or regular reflection-free glass. The only glitch is it only comes in 2mm, which seems awfully thin for our applications.
What do you all think? Is 3mm the lower limit for the 11x14 kit platen? If I do the Ultravue, I probably have to buy a bulk of it and have it cut into platen sheets, but I might do that anyway given the bulk to single-sheet cost difference (depending on cost of getting it cut).