The Leica Summarit-S 70mm f/2.5 ASPH. ($4,995) is the standard-angle lens for the company's S medium format camera line. Thanks to the large sensor size used by the S system, the lens captures images with an angle of view that's roughly equivalent to a 56mm lens on a 35mm format camera. It's a sharp lens with an aperture that's wider than most medium format lenses, although it does show some edge softness at f/2.5 and a bit of barrel distortion. The shallow depth of field at f/2.5 easily hides any weakness at the periphery of the frame, and Lightroom make short work of any barrel distortion shown in photos. If you're a Leica S shooter, this is likely the first lens you'll consider, and it doesn't disappoint. The Summarit-S 70mm ($4,999.00 at Amazon) is on the large size, but it matches well with the hefty body of the S-E (Typ 006) ( at Amazon) and other S cameras. It measures 3.7 by 3.5 inches (HD), weighs 1.6 pounds, and supports 82mm front filters. There's an integrated prote...
The Leica Summarit-S 70mm f/2.5 ASPH. has a wide f/2.5 aperture that's not common in medium format lenses, and is quite sharp regardless of the aperture at which you're shooting.
Wide aperture; Quite sharp; Focuses to 20 inches; All-weather design
Some barrel distortion; Edge sharpness suffers at f/2.5; Lacks depth-of-field scale markings