What are the most versatile lens adapters for using a variety of lenses on different camera systems?

Electronic autofocus adapter that allows Canon EF and EF-S lenses to communicate with Sony E-mount cameras, supporting autofocus, auto exposure, EXIF transfer, and a detachable tripod foot. Metal construction, lightweight, and designed to retain lens stabilization and electronic aperture control. Suited to photographers who want to use Canon glass on Sony bodies while keeping electronic functions.

Electronic Fusion adapter that mounts Canon EF/EF-S lenses to Micro Four Thirds bodies, restores autofocus, aperture control, image stabilization for compatible lenses, and supports firmware updates via micro-USB. Available in a standard Fusion version and a Fusion Redux version with a 0.71x focal reducer and tripod mount. Suited for photographers wanting to use Canon glass on MFT bodies with retained electronic functions.

A Viltrox electronic AF adapter that lets Canon EF and EF-S lenses communicate with Fujifilm X-mount cameras, providing autofocus, aperture control and firmware updates via a USB port. It includes a detachable tripod foot and supports EXIF transmission; suited for photographers who want to use Canon glass on Fuji bodies while retaining electronic control.

The Metabones MB_SPEF-E-BT2 Speed Booster ULTRA 0.71x optically condenses a full-frame Canon EF image to Sony E APS-C sensors, widening field of view and increasing effective aperture by one stop. It uses a patented 5-element/4-group design with high-index tantalum glass, supports electronic aperture control and many autofocus/IBIS functions, and includes a detachable tripod foot. Suited for photographers and videographers wanting to make EF lenses faster and wider on Sony E bodies.

The Viltrox EF-E5 Mark V is an electronic EF-to-Sony-E mount adapter with an integrated OLED display, PDAF/CDAF switching, EXIF transmission, and firmware-upgradeable micro-USB. It supports autofocus, aperture control, and Canon lens IS on compatible Sony E-mount cameras, and includes a removable tripod foot.

The Canon Control Ring Mount Adapter EF-EOS R lets you mount Canon EF and EF-S lenses on Canon RF-mount cameras while retaining autofocus and image stabilization. It adds a customizable control ring for adjusting ISO, aperture, shutter speed, or exposure compensation and features dust- and water-resistant construction, with no optical elements so lens image quality is unchanged.

The MC-21 is a fully electronic mount converter that lets Canon EF lenses be used on L-Mount mirrorless bodies while preserving electronic aperture control, EXIF data, and in-camera correction functions. It includes a compatibility LED, internal flocking to reduce reflections, and a removable tripod socket; autofocus works in AF-S mode but not AF-C. It suits photographers who want to reuse EF lenses on L-Mount bodies with retained electronic functionality.

The PRONTO Mark II adds autofocus to Leica M-mount manual lenses when used on compatible Sony E-mount cameras by extending up to 5mm with an internal helicoid. It supports AF-S and AF-C, face detection, PDAF-compatible cameras, and improves close-focus ability while remaining compact and firmware-updatable. It is best with 50mm and wider lenses and supports additional adapter rings to use other mounts via Leica M.

The Metabones MB_EF-E-BT5 (Mark V) is a fully electronic EF/EF-S to Sony E-mount smart adapter with autofocus, EXIF transmission, IBIS support, assignable focus-hold button, LED status indicator, rubber gasket, and detachable tripod foot. It preserves lens stabilization and offers smooth iris control and teleconverter compatibility, aimed at professionals and enthusiasts who want reliable electronic functionality when using Canon glass on Sony bodies.

Electronic adapter for mounting Canon EF/EF-S lenses on Fujifilm X-mount cameras with electronic contacts for aperture control, EXIF transmission, and autofocus/IS support; some variants include a 0.71x focal reducer (Booster) and USB firmware update port. Suited for photographers who want to use Canon glass on Fuji bodies while retaining electronic functions. Compatibility and performance vary by lens and firmware.

A mechanical Novoflex adapter that lets Canon EF lenses mount to Nikon F bodies while providing a precise metal mount and maintaining correct flange distance for infinity focus. It is a passive adapter with no electronic contacts, suited for manual exposure and focus workflows. Best for photographers who need to use Canon EF glass on Nikon F cameras and accept manual operation.