Acouto M42 Macro Extension Tubes 9mm 16mm 30mm Macro Extension Lens Adapter Tube Rings Set for M42 42mm Screw Mount Set for Film/Digital SLR

9mm 16mm 30mm---- This brand new Macro Extension Tube Set for your film & Digital SLR includes 3 extension tubes - 9mm, 16mm, 30mm adapters. brand new, please be assured of your purchase
Ensure Optical Quality---- Use this macro extension tube set will not downgrade the optical quality of your lens. Sharpness and Saturation can be still maintained. But they are not meter-coupled. They do not preserve the automatic diaphragm
High Quality Photography Accessory---- The extension tubes should be used with manual lenses with their own aperture dial. When using the extension ring with a DSLR / SLR, the camera should be set in the 'M' mode
No Electronic Connection---- There is no electronic connection between the body and the lens. Automatic lenses can be used with their widest open aperture only
Additional Extensions---- To provide additional extension, one or more extension tubes can be added between the camera and the lens, to make the lens focus at closer distances and therefore produce higher magnification

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