The Zeiss 25mm f/2.0 lens for Canon is a unique focal length in the Zeiss range. Works great on full frame and crop sensor Canon cameras. Not as large and heavy as the 35mm or the 21mm but still a fast f/2.0 aperture lets in a lot of light and reasonably close focusing as well. Has an all-metal construction for durability. Buttery smooth manual focusing operation. Supports focus confirmation in the camera and electronic control of the aperture.
Has a 67mm filter thread.