Extremely well made. Great optics. Very smooth focusing floating front element.

None.

A phenomenal 2x macro-focusing teleconverter! Made by Kiron. Converts any lens to a macro lens. It is a 7 element converter of very high quality. Superb glass and construction. Delivers very high quality results.

Customer Service

Haven't needed it.

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Kiron 7 element 2x converter. Just does not allow you to go into macro-mode, like the Vivitar model does.