Lens Extension Tubes

Lens extension tubes are hollow spacers that fit between a camera body and lens to increase the lens-to-sensor distance, allowing the lens to focus closer and achieve greater magnification for macro photography without additional optics

Choose tubes by the total extension needed for the desired magnification; common sets include combinations like 12mm, 20mm, and 36mm so you can mix lengths. Shorter total extension keeps working distance and light loss lower, while longer extension increases magnification but reduces effective aperture and autofocus performance

Using extension tubes typically reduces or disables autofocus, especially with longer extension, and causes light loss requiring longer exposures or higher ISO; tubes with electronic contacts retain lens-to-camera communication for aperture control and metering, while purely mechanical tubes do not

Compatibility depends on mount type and whether the tube set matches your camera's mount (e.g., Canon EF, Nikon F, Sony E). Check that the tube maintains the correct electronic contacts for your lens if you need aperture control or autofocus; physical fit and flange focal distance are important for infinity focus—extension tubes eliminate infinity focus by design

Lower-cost tubes usually perform the same optical function but may have looser fit, weaker mount durability, or lack electronic contacts; higher-end tubes tend to have more precise mounts, reliable electronic connections, and solid construction but cost more

Attach and remove tubes in a clean, dry environment to avoid dust on the sensor or lens, store them with caps on, periodically clean contacts with a dry lint-free cloth if present, and avoid overtightening mounts to protect bayonet flanges and electronic pins