Extremely fast f/1.4</br>10-bladed aperture diaphragm creates very pleasing out-of-focus highlights</br>All metal lens barrel</br></br>Product Description</br></br>This Voigtlander Nokton 40mm f/1.4 lens is an extremely fast lens, is multi-coated, compact, and only weighs 6.2 oz (175 g). The ideal every-day lens for shooting in low light situations, with excellent focusing results.</br><br/>http://www.amazon.com/gp/product/B000Q8AD7G