As promised a view through a 6 year old poly-carbonate sheet. Hardest bit is taking photo due to reflection....but you can see what's going on.
Nigel: If you can get a piece of polaride and hold it between camera and polycarbonate crown board you can cut out most of the shine from the reflection. You can, of course, buy dedicated polaride filters that fit on the end of the lens of some cameras. Some sun glasses have built in polaroid filters and you can interpose them between camera and crownboard. Hope this helps .
I see I am classified as a newbee (afterall I have only been keeping bees for 59 yrs!) Next year marks 60 yrs since I passed the Preliminary ( basic certificate in old currency)