Sony a Lenses - Manual (Page 14)

Mid-range zoom
28–75mm F2.8 SAM SAL2875
If you use a 35mm full frame format camera body, this award-winning* lens
offers an ideal balance of brightness, zoom range and image quality for a
wide range of situations you’re likely to encounter in everyday shooting. The
fact that it features a constant, bright F2.8 maximum aperture at all focal
lengths offers significant advantages for hand held and low light shooting,
as well as for creating gorgeous defocused backgrounds. But you never
know when you might need to go a bit longer, so if there’s room in your
bag consider taking the 75–300mm SAL75300 along as well: the SAL2875
plus SAL75300 combination gives you a full-frame focal length range from
28mm to 300mm.
• Weight (approx): 565 g
• Dimensions (Dia. x L): 77.5 x 94 mm
• Max. magnification ratio: 0.22x
* The SAL2875 received the
2010 TIPA Best Expert Lens award.
Three ED glass elements and four apherical
elements for superior image quality
Bright constant F2.8 maximum aperture
Responsive internal SAM (Smooth Autofocus
Motor) autofocus drive
Circular aperture for attractive defocusing
Aspherical lens ED glass
A mode, 4 sec., F9.0, -1.0 EV, ISO 200, Daylight white balance; Photo: Kazu Kobayashi
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Co
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0 4 8 12 16 20 0 4 8 12 16 20
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 28 mm At 75 mm
Telephoto zoom
DT 55–200mm F4–5.6 SAM SAL55200-2
Covering the medium to telephoto stretch of the “standard” zoom range
with ample F5.6 brightness at the 200mm end, this lens is a lightweight,
easy handling choice for shooting sports and other subjects that require
some telephoto reach. On an APS-C format camera the 35mm equivalent
focal length at the telephoto end is 300mm, which is long enough to
capture tight shots of the action. In terms of compact, lightweight design
and optical performance, the SAL55200-2 is an ideal companion for the
18–55mm SAL1855. The pair is light enough to be carried comfortably,
providing outstanding image quality from 18mm to 200mm.
• Weight (approx): 305 g
• Dimensions (Dia. x L): 71.5 x 85 mm
• Max. magnification ratio: 0.29x
One ED glass element for superior image quality
Medium to telephoto range in a lightweight lens
9-blade circular aperture for attractive defocusing
Responsive internal SAM (Smooth Autofocus Motor) autofocus drive
35mm equivalent focal length: 82.5–300mm
ED glass
S mode, 1/3200 sec., F9, ISO800, Auto white balance
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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 55 mm At 200 mm
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