Black 7Artisans Micro M4/3 Mount 25Mm F1.8 Manual Focus Lens For Panasonic And 7artisans 25mm / f1.8 features a seven-element, five-group design. It has a maximum relative aperture of F/1.8 to F/16 through its range. The minimum focal length is 0.18m with the length of 32mm and the diameter of 51mm. You are able to buy different versions . camera without an extra adapter, such as , Panasonic, Olympus. It is wide compatible. Twelve diaphragm blades are crucial . to favorable rendition of highlights in the fore and background. It provides high quality of the transition as well as nice bokeh for the lens,. keeping the background intentionally blurred to keep the attention of the observer on the main subject. With aluminum-made body and copper bayonet, 7artisans 25mm / f1.8 weights as light as 143g, which is portable for your photography.