The Venus Optics Laowa 25mm f/2.8 2.5-5X Ultra Macro Lens for Sony E is a macro prime lens in E mount with a maximum aperture of f/2.8. It has a maximum magnification of 5:1 and a minimum focus distance of 17.3 cm. This means the lens is suitable for larger-than-life macro photography. The Laowa 25mm f/2.8 2.5-5X Ultra Macro weighs 400 grams and has no filter thread. The dimensions are 65 x 82 mm and it weighs 400g.