the f/stops here wrote:
Richard, another easy solution is a sheet of black chip board, black foam core, simply black paper or any black material. a 16X20 inch ($2.00 cost) of black foam core with a hole cut in the center the size of your lens works really well. Glass is always going to reflect, so let it reflect black (or the absence of anything reflective). Be sure to clean both surfaces of the glass. Have fun, J. Goffe
Excellent idea! Thank you! I will try this. Thanks!