OK. The I-96U is a 4-element enlarger lens. I've got one, and it's pretty similar to a 4-element Durst Neotaron in quality, and superior to my Nikon EL-Nikkor 4-element (but not as good as my Nikon EL-Nikkor 6-element). Most of the I-96Us I've seen on eBay have a removable extension tube barrel. Depending on your enlarger, you might need to use the lens with or without the extension tube. If you happen to have any M39 SLRs, such as an early Zenit, you can use the extension tube with the camera to take macro photos.
Originally Posted by cleber figueiredo