wrote in message
...
In message , I,
wrote:

Is glare an issue?

I guess not, as long as they are illuminated from behind; they are
transmission wedges.

Actually to get the best results, one should *only* have back-lighting
for such dense areas as the target offers. Any light striking it from
the front will reduce contrast a little. Of course, if the amount of
backlighting is much larger than any ambient light to the front, there
is no issue. That means that it's best to shoot the target with the
front shielded from ambient light, and the back only lighted by a
lightsource that's shielded from lighting anything else than the
target.

Bart