above from my blog post 14th may- knot in the wood in my parents' shed inspiring and linking camera obscura magic and magic and secrecy of sheds and feeding directly into the story- found the link!!
image much sharper smaller hole (0.8cm) but barely visible on overcast day. 1cm much better with a sharp focus within the 10 x 6 ft box area.
research into focal length and holes versus lenses- tried a +1 close up filter which give a diaopter focal length of 2 metres, and a much brighter image.
different use of masks size, depending on where to reflect or screen image. blackout to change between parts of story where image is projecting