Hi, I am selling this lens, the first version of the elmoscope, very sharp. sample photo is taken on full frame with an 85mm nikon at f4 with no diopter at about 5 ft. Rear mount is 50mm, bluish flares. 400$ U.S. with free shipping via fedex worldwide. Will post this on ebay as soon as it allows me to upload. Have tried the past 2 days and photos do not seem to upload. btw, this is my first try to sell anything internationally