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| Electronics > Camera & Photo > Accessories > Lens Accessories > Extension Tubes |
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| Product Description They are mounted between the camera body and the lens, As a rule, the effect becomes stronger the shorter the focal length of the lens in use, and the longer the focal length of the extension ring. Through the-lens exposure control automatically compensates for lens extension.Nikon extension rings can be used singly or in combination to vary the reproduction ratio of lenses from 20 to 300mm. Nikon PK-13 Ai Auto Extension Tube 27.5mm Shipping Weight: 2 pounds | ||||||||
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