77 of 81 people found the following review helpful
Good Product That Works,
If you are looking for a functional macro, for example to take pictures of individual flowers, keep in mind that these extension tubes work better on telephoto lenses for this purpose.
Use of any of these tubes on a lens with a focal length of less than 55mm (on a digital camera with an APS-C sensor, 1.5x crop) will result in a focusing distance so close you would only be able to photograph the individual stamen. For example, with the 36mm tube on a 50mm lens, I could capture a human hair from a few inches away. Even the 12mm on a 50mm lens results in an exceptionally close focusing distance (eg, photographing a small nail). However, with the 12mm tube on an 85mm lens, I can capture a flower at about 18 inches away.
The tubes are decently made. I have the light-weight plastic Nikon lenses, so not a problem for these and no flexing.