Samyangs 35mm t13 ed as umc cs is a standard angle manual focus cine lens for mirrorless cameras with aps c or micro 43 sensor size the flow of light is devised based on the uniqueness of the distance from glass to sensor in mirrorless cameras to create optimal performance the bright t13 aperture secures a fast shutter speed even under restricted lighting conditions to offer best quality images it will brighten up your everyday snapshots but also creates an outstanding out of focus lo