Caruba Extension Tube Set Canon Chrome Type II RF Series

Compatibility and Design

• Set of two extension tubes designed for Canon RF cameras and lenses
• Chrome mount base ensuring durability and secure attachment
• Compatible with Canon RF lenses, maintaining full electronic communication

Functionality

• Extension tubes contain no optical elements, preserving image quality
• Allow closer focusing distances for macro photography and close-up shots
• Autofocus and TTL light metering functions remain operational
• Manual focusing is recommended due to very tight focus range

Macro Photography Benefits

Every lens has a minimum focusing distance. By inserting an extension tube (spacer ring) between the camera body and lens, this minimum focusing distance is reduced, enabling closer subject capture and larger image magnification.

How Extension Tubes Work

A spacer ring increases the distance between the camera's image sensor and the rear element of the lens, shortening the focusing distance and increasing magnification. The maximum magnification with a spacer ring can be calculated as:

Maximum magnification = lens magnification factor + (spacer ring length in mm / lens focal length in mm)

Examples

• For an 85mm lens with a magnification factor of 0.13:
• With an 11mm extension tube: 0.13 + (11 / 85) = 0.26
• With a 16mm extension tube: 0.13 + (16 / 85) = 0.32
• Combined 27mm extension tubes: 0.13 + (27 / 85) = 0.45

Note: Using combined extension tubes results in approximately 2 stops loss of light.

Included in the Package

• 1 x 11mm extension tube
• 1 x 16mm extension tube
• 1 x Lens cap

Additional Features

• Ideal for macro photography and special close-up effects
• Reduces minimum focus distance without compromising image quality
• 3-year warranty included