Includes 10mm and 16mm Extension Tubes Supports full-frame sensors Tubes can be used singularly or together Each extension tube is equipped with electrical contacts for communication between camera and lens Fully-automatic aperture diaphragm coupling Maintains TTL metering AF operation is possible, but as depth of focus is very small, switching to manual focus is advised The length of extension tubes used should be less than the focal length of the lens Not designed to be used with mount adapters or tele converters. Doing so could damage lens or camera
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