Hi Carl,Thanks so much for running through that set up for me, a "close up" diopter, do you mean a Nikon 5T or Canon 500D.The picture I posted shows enough detail it's just the extra light at the top of the eye that spoils it.What you have explained to me is the info I needed to give me a good idea on how to go about this.Looks like I need a few more bits and pieces, but it's stuff I can use again.All the best matestevie
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