n5jrn
Well-known
Many of the "Super Nooky" devices that you see for various cameras include a wide rectangular lens for the rangefinder and a screw-in close-up lens.
Those were brought out by third parties after Leica came out with the NOOKY. My favorite name of the bunch is the (I kid you not) "Pleasant Auto-Up Super Nooky". I almost bought one of those just because of the name.
Aside from the double-entendre (or would that be a triple or quadruple entendre?) amusement factor, however, the third-party alternatives I ran across had little to offer. I paid only about $15 more than the going rate for those third party devices for my genuine (and optically superior) Leitz NOOKY-HESUM.
When it comes to NOOKY, accept no substitutes. 😛