Thanks Bill, and your work also is great. No, the meter was laid flat on the copy stand facing the camera, so only the lighting entering the camera should have been registered. The camera itself is silver, almost the same as the coin (a little brighter), so I should have gotten something out of it. I did both a 1.5 sec. and 2 sec. exposure, which bared nothing. Negatives for all 6 photos taken with the ext. tube on are OK, the next six, without, are all the same. You're right, I could have tried using the reflective side of the meter, as opposed to the incident (may have been better in this situation). (empty). Will shoot another roll tomorrow using the reflective meter and see what I get. Nothing like a little experimentation. Thanks again my friend.