Making light work for you is the photograher’s struggle and there is a tool that more people should try out. A number of manufacturers make a folding light reflector that might be of considerable help in getting more light on to your photographic subject, both sunlight and bouncing electronic flash light. Certainly for field work enough gear is already on archaeologists’s backs but this folding reflector is small when folded and light in weight. The model shown in the following photos is very useful and quite large when unfolded. The biggest hurdle is learning the slight trick to refold it and get it back into its case. The circular reflector has a wire in the perimeter. I bought mine a few years ago for about $40. One side is silver and the reverse is white.
two shots of me – you can see which one had the reflector balancing out the light