Has anyone here ever tried one of these: http://www.bhphotovideo.com/c/produ...18_7x18_HawkEye_Monocular_with.html#features? The price is certainly right, and it would help with scale focusing cameras. I could probably rig it to a cold shoe pretty easily. What do you think? The only potentially deal killer that I see is that it only focuses as close as 8-1/2 feet....but perhaps there is something like it that focus closer. Another idea I had is to mount my non-working Pentax Auto 110 to the shoe on my Nikonos, and focus its little lens to get the distance.