Sony 135 F2.8 [T4.5] STF SAL135F28

prod. code:

SAL135F28

year: 2006

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coverage:

Full frame

production: Current

max. aperture:

2.8-[T]4.5

D type lens: No

min. aperture:

SLT compatible: Yes

focal range:

135 mm

AF Drive: Manual focus only

elements/group:

8/6

AF-D (a99 only): No

angle of view:

18,2

lens ID: 20

aperture blades:

9/10

overall ratings: 4.85

sharpness rating: 4.88

color rating: 4.97

build rating: 4.79

distortion rating: 4.85

flare control: 4.76

total: 33 reviews

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Minolta - MF 135 F2.8 T4.5 STF

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minimum focus distance:

870 mm

filter rotate when focusing:

filter rotate when zooming:

max. magnification:

1/4

focus design:

floating

min. length:

99 mm

max. length:

? mm

filter diameter:

72, front mm

hood:

bayonet

weight:

730 g

color:

black, silver

standard accessories: Supplied Accessories: Front and rear lens cap, SH0014 lens hood

features:
A unique telephoto lens for smooth, natural focus effects in foreground and background. This advanced STF (Smooth Transition Focus) telephoto lens incorporates an apodization optical element that distributes light rays to create smooth, aesthetically pleasing out-of-focus backgrounds that make sharp-focus subjects stand out more vividly. Mounted on the Sony® α (alpha) DSLR-A100 camera, this lens provides a 200mm focal length (35mm equivalent).

Smooth Transmission Focus:
While subjects remain in sharp focus, out-of-focus backgrounds or foregrounds are blurred smoothly and evenly with gradation that thickens toward the edges of the frame for a pleasing aesthetic effect.

Transmissive Brightness:
After light passes through the apodization element, the lens aperture of f2.8 yields a T (transmissive brightness) equivalent of 4.5; a manual aperture ring can adjust T setting from 4.5 to 6.7.

Wide Focus Ring:
The dedicated manual focusing system is controlled by a wide focus ring that’s comfortable to hold and gives you a solid, hands-on feel for pinpoint focusing of your subject.

Circular Aperture:
Because aperture blades form a near circle at the wide openings used for low-light shots, spot-light sources have a pleasing circular defocused effect.