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. 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. 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. 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. 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.

Manufacturer: Acouto. Date First Available: April 7, 2019. Best Sellers Rank: #53 in Lens Extension Tubes. Customer Reviews: 4.2 out of 5 stars 32 ratings 4.2 out of 5 stars. : B07QFKLNNC. Item Weight: 0.704 ounces. Product Dimensions: 2.36 x 2.36 x 2.36 inches.