Metabones Speed Booster ULTRA FUJI X to Minolta MD

The Minolta MD Lens for Fujifilm X-Mount Camera Speed Booster ULTRA from Metabones improves on the original Metabones Speed Booster with a 5/4 optical design group element incorporating ultra-high refractive index tantalum-based glass to improve sharpness and distortion and reduced vignetting. The Ultra Booster speed allows a full-frame Minolta MD lens to be mounted on an APS-C X-Mount format camera and in doing so, increases the viewing angle and increases the maximum aperture by about one f/stop.

When a lens intended for full 35mm frame or film sensors is mounted on a camera with an APS-C size sensor, it transmits a larger area of light than the smaller sensor was built to accept and therefore the effective angle of view of the lens increases. The Speed Booster condenses the light from the lens and projects it onto the APS-C sensor which allows the sensor to use the entire lens' light and effectively reduces the crop factor of APS-C and E-Mount camera from 1.5x to 1.07x, producing a full frame angle of view with an APS-C sensor. A corresponding increase in the maximum aperture of one f/stop makes the lens more effective in low-light situations and capable of creating a depth of field.

Although the lens fits physically, the automatic diaphragm (AE Measurement), or other auto functions are not preserved the use of this speed booster. Speed Metabones Boosters are quality made, using precision machined brass with chrome plating on both the camera body and lens side of the booster dose in order to ensure smooth mounting, aesthetic quality, and durability. A matte black interior reduces internal reflections and a satin black split external surface with most camera bodies and lenses. This adapter has a detachable tripod foot that is compatible with the Swiss Ark, Markins and Photo Clam ball joints.