Voigtlander's Heliar 50mm f/2.0 Lens w/M39 Mount (Nickel-Plated) is a fast f/2 classic-style Leica screw-mount lens with a handsome nickel-plated finish--unlike most Voigtlander lenses, which are black or silver chrome. This "normal" (for full-frame 35mm format) infinity-lock design lens has a sharp 5-element, 3-group optical design. Ten aperture blades provide very attractive bokeh (the portion of an image that is out of focus). This lens focuses down to 3.28' (1 m).
| Maximum Aperture | f/2.0 |
| Minimum Aperture | f/16 |
| Groups/Elements | 3/5 |
| Picture Angle | 46° |
| Number of Aperture Blades | 10 |
| Minimum Focus Distance | 3.28' (1.0 m) |
| Front Filter Thread Size | 39 mm |
| Camera Mount | M39 |
| Dimensions | 1.85" diameter x 1.47" length (47 mm diameter x 37.5 mm length) |
| Weight | 6.73 oz (191 g) |