Spiffy Gear Spekular Light Blaster Nikon to Canon EOS Adapter

It works, but has no instructions. You need to look at it carefully before you assemble it to a lens/blaster, or you will have trouble getting it off.

As another review states, the locking tab is not well made. It does require a certain amount of proper pressure to release, and I fear it could eventually break. But the unit does the job it is supposed to... if the locking tab were more robust I'd rate the whole thing a 4 or 5 as to my slight experience with the adapter so far. As an aside, it can also allow use of many Nikon lenses on Canon bodies (with no AF, aperture controls, etc).

Unfortunately it does not lock into, or fit snugly, into the Light Blaster's mount. This means that when you want to focus or zoom, you must use two hands. One to turn the focus or zoom ring and the other to hold the lens and adapter from twisting within the Light Blaster's mount.I also have a K&F Concept lens adapter. It fits MUCH more snugly allows for one handed ajustments on the lens

the locking tab is poorly made and once on your nikon lens is almost impossible to get off, your better off going to a pawn shop and getting a cheap cannon lens.