The Meike EFTE-0.71X Speedbooster lens mount adapter enables Canon EF lens compatibility with Sony E-mount camera systems. This optical adapter reduces the focal length by approximately 30 percent while increasing the aperture by one full stop, effectively transforming EF lenses into more versatile photographic tools. Constructed with multi-coated optical glass elements, the adapter maintains image quality while providing wider angles of view and improved low-light performance. The 0.71x focal reduction factor makes standard lenses behave like wider alternatives, ideal for portrait photography where closer working distances and enhanced background separation are desired. For wildlife and action photography, the adapter allows greater subject proximity without sacrificing optical performance. Videographers benefit from the reduced depth of field characteristics that contribute to cinematic visual aesthetics.

The adapter features precise mechanical construction with secure mounting mechanisms to ensure stable lens-camera connections. All electronic contacts and communication protocols are maintained, preserving autofocus functionality and aperture control between compatible Canon EF lenses and Sony E-mount cameras. The compact design measures approximately 65 mm in diameter and 25 mm in depth, with a weight of approximately 180 grams. This adapter supports full-frame and APS-C sensor formats, providing flexibility across various Sony camera systems. The black anodized aluminum construction offers durability while maintaining lightweight portability. Compatibility extends to most Canon EF mount lenses, though performance may vary with specific lens models and camera combinations. The optical design minimizes distortion and chromatic aberration while maximizing light transmission efficiency. This adapter serves as a practical solution for photographers transitioning between camera systems or seeking to expand their creative possibilities with existing lens collections.