Sony SAL-135F28 Telephoto 135mm f/2.8 [T 4.5] STF (Smooth Transition Focus) Manual Focus Lens for Alpha & Minolta Maxxum Series (Sony Malaysia)

The Sony STF 135mm f/2.8 [T4.5] Lens is innovative not only because it offers superb picture sharpness with high-quality descriptive performance, but it can also produce perfectly defocused image areas. Imperfections in defocusing effects, such as a defocused image dissolving into cluttered unsharpness, or a defocused image of a stem looking like overlapped images, have always been a source of headaches for photographers.

The STF 135mm f/2.8[T4.5] eliminates the factors impairing the quality of defocused areas, and realizes a smooth transition from focused to defocused areas with unsurpassed defocusing effects both in foreground and background. The lens construction includes an apodization filter to implement a natural shift from focused to defocused areas. As a result, the original outline of the subject remains clear, the image is provided with depth, and the subject is visually outstanding.

The lens is also designed to minimize aberrations that deteriorate the quality of defocused image areas. The 9-blade circular aperture also contributes to smooth rendition of defocused highlights, such as blurred points of sunlight coming through forage.

Specifications

Type	135mm f/2.8 (T4.5) STF Telephoto Lens
Design	Smooth Transmission Focus system for pleasing effect Apodization Lens Element smoothes out-of-focus areas Subjects stand out vividly against smooth, even backgrounds
Focusing	Manual focusing with comfortable wide focus ring
Aperture	Circular Aperture gives spot-light sources a circular shape Manual aperture ring adjusts from T 4.5 to T 6.7
Focal Length	35mm Equivalent: 135 mm APS: 202.5 mm
Angle of View	35mm Equivalent: 18 deg APS: 12 deg
Min Focus Distance	2.85 ft (87 cm)
Aperture Maximum	f2.8 (T=4.5)
Aperture Minimum	f31 (T=f32)
Maximum Magnification	0.25X
Lens Construction	6 elements in 8 groups with 9 aperture blades
Filter Diameter	72 mm
Lens Dimensions	3-1/8" x 3-7/8" (80 x 99 mm)
Lens Weight	1 lb 9-3/4 oz (730 g)

Includes

• Front & Rear Lens Caps
• Lens Hood