Otherwise, an aperture value on a Canon EF lens may be set by first placing the lens on a Canon EOS camera and then pressing the camera's depth of field preview button while removing the lens prior to placing it on the adapter. A Canon EF lens may be effectively used with its aperture diaphragm fully open along with this adapter and a Fujifilm X mount APS-C camera. When removed from a compatible Canon camera, the aperture diaphragm on a Canon EF lens is designed to open to its widest setting. This adapter does not support electronic communication between an attached camera and lens. When using the Lens Turbo Adapter V2 for full-frame Canon EF Mount Lens to Fujifilm X Mount APS-C Camera, a lens placed on it is kept securely attached via a push-button, side-locking knob. Inside are four lens elements, one of which is an extra-low dispersion element that helps to reduce chromatic aberrations. This adapter is constructed from aluminum and plastic for durability while minimizing weight and its mounting rings are made of stainless steel to further prevent wear-and-tear. This allows the APS-C sensor to utilize more of the light gathered by the lens, which effectively eliminates the crop factor while making available to the sensor an additional 1 stop of light for each of the lens's f/stop settings. The Lens Turbo Adapter V2 for full-frame Canon EF Mount Lens to Fujifilm X Mount APS-C Camera condenses the light from a lens designed for 35mm film or 'full-frame' camera sensors and projects it onto the APS-C sensor. Able to capture only the center portion of the projected image, the effective angle of view of the lens would be narrowed, creating an in-camera 'crop factor'. If a lens intended for 35mm film or similarly-sized 'full-frame' camera sensors is connected to a camera with an APS-C sized sensor, it would project an image larger than the smaller sensor was built to accept.

While doing so, the adapter approximates the lens's angle of view as if it were placed directly on a camera with a full-frame sensor while providing a 1-stop increase over the lens's aperture range. The Lens Turbo Adapter V2 for Full-Frame Canon EF Mount Lens to Fujifilm X Mount APS-C Camerafrom Mitakon Zhongyi allows a full-frame Canon EF mount lens to be mounted onto a Fujifilm X mount camera.

Objektiv pro canon