Sony a Lenses - Manual (Page 11)

Mid-range zoom
DT 16–50mm F2.8 SSM SAL1650
The SAL1650 packs first-class optical performance and a versatile
zoom range into a lens that is remarkably compact and lightweight.
At the wide end you have a 16mm focal length that is ideal for
interiors, sweeping landscapes, or creating visual impact with powerful
perspective. Zoom out to the 50mm end for mid-range telephoto reach
that can bring details and distant subjects closer. What’s more, you have
a constant F2.8 maximum aperture throughout the entire zoom range.
That makes shooting in low light easy, especially when the lens is used
with a body that includes SteadyShot INSIDE™ body-integrated image
stabilization. A large maximum aperture also provides plenty of margin
to stop down for increased depth of field or to freeze fast motion. The
SAL1650 additionally features a circular aperture that, combined with
the F2.8 maximum aperture, contributes to beautiful defocusing effects.
• Weight (approx): 577 g
• Dimensions (Dia. X L): 81 x 88 mm
• Max. magnification ratio: 0.2x
Three ED glass elements and two aspherical elements for superior image quality
Bright constant F2.8 maximum aperture
SSM (Super Sonic wave Motor) for fast, quiet autofocus operation
Circular aperture for attractive defocusing
Dust and weather resistant design
35mm equivalent focal length: 24–75mm
Aspherical lens ED glass
M mode , 1/250 sec., F5.6, ISO 400, Manual white balance
Contrast
(%)
Spatial frequency
10 line pairs/mm
30 line pairs/mm
R: Radial values T: Tangential values
Max. aperture
R R T T
F8 aperture
100
80
60
40
20
0 3 6 9 12
Contrast
(%)
Distance from optical center
of lens (mm)
At 16 mm
100
80
60
40
20
0 3 6 9 12
Distance from optical center
of lens (mm)
At 50 mm
Mid-range zoom
DT 16–105mm F3.5–5.6 SAL16105
Zoom range can be a very subjective and personal choice, hinging on
individual shooting style and preferred subjects. The 16–105mm range
of this lens is a “sweet spot” for many photographers, wide enough at
the 16mm end to capture indoor scenes and long enough at 105mm
to fill the frame with relatively distant subjects. Comfortable handling is
another plus, facilitated by a compact, lightweight design and an auto-
clutch mechanism that prevents focus ring rotation during autofocus
operation, so you can comfortably cradle the lens in your hand while
shooting. Of course comfort isn’t everything. A precision optical design
delivers superb image quality throughout the entire zoom range.
• Weight (approx): 470 g
• Dimensions (Dia. x L): 72 x 83 mm
• Max. magnification ratio: 0.23x
One ED glass element and two aspherical elements for superior
image quality
High resolution and contrast throughout zoom range
Circular aperture for attractive defocusing
Focus ring with auto clutch does not rotate during autofocus
35mm equivalent focal length: 24–157.5mm
Aspherical lens ED glass
M mode, 1/100 sec., F8, ISO 200, Daylight white balance, Landscape Creative Style; Photo: Norifumi Inagaki
100
80
60
40
20
0 3 6 9 12
Contrast
(%)
100
80
60
40
20
0 3 6 9 12
Contrast
(%)
Distance from optical center
of lens (mm) Distance from optical center
of lens (mm)
Spatial frequency
10 line pairs/mm
30 line pairs/mm
R: Radial values T: Tangential values
Max. aperture
R R T T
F8 aperture
At 16 mm At 105 mm
21 20