Sony SLT-A57M 2011 α Lens and Lens Accessory Brochure and Specificat - Page 17
DT 35mm F1.8 SAM, 50mm F1.4
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Contrast (%) Contrast (%) M mode, 1/320 sec., F5.6, ISO 200, Cloudy white balance (-1); Photo: Kentaro Fukuda Normal DT 35mm F1.8 SAM SAL35F18 Excellent sharpness and contrast throughout the image Circular aperture for attractive defocusing Responsive internal SAM (Smooth Autofocus Motor) autofocus drive Bright enough for handheld shooting in low light 35mm equivalent focal length: 52.5mm At 35 mm 100 80 60 40 20 0 3 6 9 12 Distance from optical center of lens (mm) Spatial frequency Max. aperture R T 10 line pairs/mm F8 aperture R T 30 line pairs/mm R: Radial values T: Tangential values There's a very good reason why 35mm is one of the most popular focal lengths for use on APS-C format cameras. The full-frame equivalent focal length is 52.5mm, providing "normal" perspective-similar to that experienced with the naked eye-and an angle of view that is suitable for an extremely wide range of subjects. You can shoot anything from landscapes to portraits with this lens, without ever feeling that the perspective is too forced or too flat, or that objects appear distorted.The large F1.8 maximum aperture is another advantage: bright enough to allow hand-held shooting in low light, and capable of producing smooth defocusing effects that can add depth and artistic elegance to your images. As a bonus, the SAL35F18 weighs a mere 170 grams, making it unobtrusive on the camera, in a bag, or even in a pocket! • Weight (approx): 170 g • Dimensions (Dia. x L): 70 x 52 mm • Max. magnification ratio: 0.25x 32 A mode, 1/320 sec., F2, +0.3 EV, ISO 200, Manual white balance Normal 50mm F1.4 SAL50F14 Flare effectively controlled for high contrast Outstanding corner-to-corner resolution Bright F1.4 max. aperture facilitates hand-held shooting in low light Circular aperture for attractive defocusing At 50 mm 100 80 60 40 20 0 3 6 9 12 20 Distance from optical center of lens (mm) Spatial frequency Max. aperture R T 10 line pairs/mm F8 aperture R T 30 line pairs/mm R: Radial values T: Tangential values 50mm focal length with a maximum aperture of F1.4: this quintessential fast "normal" lens formula has produced some of the greatest photographic masterpieces in history, and continues to serve as a photographic standard to this day. Of course not all 50mm F1.4 lenses are created equal, and the stunning clarity and contrast delivered by the SAL50F14 proves that it is one of the finest in its class. While the in-focus plane is sharp from corner to corner, the combination of F1.4 maximum aperture and circular aperture design makes it possible to elicit silky-smooth defocusing effects to enhance dimensionality and isolate important visual elements.This is a lens that should be part of every serious photo enthusiast's palette. • Weight (approx): 220 g • Dimensions (Dia. x L): 65.5 x 43 mm • Max. magnification ratio: 0.15x 33