Lens Extension Ring

They are actually hollow and lightweight tubes that fit between the camera mount and the lens.

Lens extension ring.

Unlike the tube extension that works for all lenses with f mount the reverse adapter needs to be compatible with your front thread of your lens. The introduction of an extension tube or spacer ring between a camera and a lens decreases the object distance and increases the image distance. If you use a filter it s the same size as for the filter. It s not an optical element so there is no glass involved.

This article deals mainly with converters that fit between camera body and lens which means that you can use one of them with several different lenses irrespective of the filter size. It also moves the front element of your camera closer to the subject or the image that you have to capture. I recommend attaching the tube onto the lens first then mount the whole thing to the camera body. Extension rings or spacer rings are used to extend the image distance between the main image plane of the lens and the sensor.

You attach extension tubes between your camera body and the lens. Spacers and focal length extenders modify the field of views or working distances in fixed focal length lenses whereas shims can be used to precisely control the working distance of telecentric lenses. You can use one or stack them for maximum effect. Kowa offers c mount extension rings of 1mm 5mm 10mm and 20mm lengths.

Make sure you get the right type for your camera body connector. An extension tube is an attachment that goes between your camera body and your lens. An extension tube basically provides greater extension for your in built lenses. Thus the working distance can be reduced and the magnification can be increased.

Now the practical upshot of this is that your minimum focusing distance gets smaller. I can put extension tubes between this lens and my camera to get effective magnifications up to around 1 5 1 with moderate to small working distances but i can also turn this lens around with the same extension tubes to get. The 50mm lens for example needs a 52mm adapter ring. They work by moving your lens farther away from your camera.

Lens spacers shims and focal length extenders are simple tools a user can easily utilize to achieve these requirements. All it does is get the lens further away from the focal plane. Nikon pk 13 27 5 macro extension tube nikon pk 13 macro extension tube designed for use with the micro nikkor 55mm f2 8 and 3 5 lenses.