I have used the 'normal' focal length Diana lens for about about a year and really admire its qualities so this seemed like a good addition to the camera case. It uses the same form of adapter as the shorter lens but when I mounted it on my Canon 5DII, it will only focus from quite close to about twelve feet... nowhere near infinity, thus limiting its usefulness to close ups and portraits. That said, within its limited range of focus, the effect is pretty wonderful. Using it on a DSLR allows you to see the exact rendition through the lens rather than guessing what is happening with it on the Diana/Holga camera.
Lens flare is something you may or may not want. I made a short lens hood from a black plastic notebook cover which all but eliminates it and increases the color contrast.
It turns your expensive DSLR photos into a cheap looking photos... BUT, in a good way. You may lose quality in your pictures but the end results are priceless. But a word of warning, however, the photos seen on the box or even in the accompanying manual, are not the actual results of using the lens itself. Remember, it is an attachment for canon DSLRs. My guess is, the photos you see on the box are photos taken with an Diana 120N film lomo cameras itself. With that said, I minus one star for the misconception.