Sony SLT-A77VM 2011 α Lens and Lens Accessory Brochure and Specifica - Page 19
mm F2.8 [T4.5] STF, DT 30mm F2.8 Macro SAM
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Contrast (%) Contrast (%) A mode, 1/400 sec., F4.5, ISO 200, 5300K color temperature; Photo: Chukyo Ozawa Telephoto 135mm F2.8 [T4.5] STF SAL135F28 Unique Smooth Trans Focus design featuring apodization optics Sharp in-focus areas with extra-smooth background and foreground defocusing Smooth, natural highlight diffusion Manual focus and manual aperture ring At 135 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 This unique lens has been specifically designed to deliver smooth transitions between crisp in-focus areas and creamily defocused background and foreground areas. It uses special apodization* optics to produce images that seem to have an extra dimension, with high resolution at the plane of focus, gradually melting away to beautifully diffused out of focus rendition. With some lenses highlights in defocused areas can be distracting, but with this unique Smooth Trans Focus design they retain their natural shape in a way that doesn't detract from the defocused background or foreground, and there's no ugly double-line defocusing. The SAL135F28 promises a one-of-a-kind photographic experience. A manual aperture ring is provided for direct, hands-on defocusing control. • Weight (approx): 730 g • Dimensions (Dia. x L): 80 x 99 mm • Max. magnification ratio: 0.25x * "Apodization" is the technical term for changing the shape of a mathematical function; in this case the optical transmission characteristics of the lens. • For details of STF technology. See pg.17. 36 P mode, 1/200 sec., F4.5, ISO 100, Auto white balance; Photo: Kentaro Fukuda Macro DT 30mm F2.8 Macro SAM SAL30M28 2cm working distance lets you get really close Precision optics deliver excellent sharpness and contrast Compact, lightweight, portable design Responsive internal SAM (Smooth Autofocus Motor) autofocus drive 35mm equivalent focal length: 45mm At 30 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 If you shoot with an APS-C format camera and want a lightweight, compact lens that will handle snapshots and portraits plus macro photography as well, this is it. The 35mm equivalent focal length of this lens is a distinctly "normal" 45mm, making it a good choice for general photography. But when an exquisite little detail catches your eye, you can move in as close as 2 centimeters from your subject to capture macro images with up to 1:1 magnification. The details you focus on will be astonishingly sharp, while the out-of-focus background dissolves into a creamy blur that can really make the details stand out. The SAL30M28 is only 45 millimeters long and weighs a discreet 150 grams, so it can stay on your camera or in your bag at all times without getting in the way. • Weight (approx): 150 g • Dimensions (Dia. x L): 70 x 45 mm • Max. magnification ratio: 1.0x 37