Bests & Worsts Reviews from Amazon

I see that in the negative ratings here the people simply misunderstood what these are for. They are to move your camera in CLOSER to the subject and simulate a macro lens. What they do is essentially act as a magnifying glass. And like one, you need to move it in and out till you find the appropriate distance for it to work properly. This is not a tele-converter. I find they work quite well. I have had macro lenses in which the subject takes up the sensor, a 1:1 ratio. These however allow for the subject to assault the sensor. Instead of life size these make for race of super giant monster sized. Ultra macro can be achieved with the small expenditure of fifteen bucks. I find there is no outstanding vignetting or aberrations. At the highest magnifications there is an extremely shallow depth of field, so be sure you are prepared to work with that if you plan on working in those types of magnification. Overall a great product, and with macro lenses starting at $500, I encourage you to sacrifice just a little of that macro lens fund to just give these a try and see if you can't go spend that extra money saved up on a hot date, camera geek.