Sony Alpha SLT-A77V Specifiche tecniche - Pagina 13

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Sony Alpha SLT-A77V Specifiche tecniche
High magnification zoom
DT 18–250mm F3.5–6.3 SAL18250
Aspherical lens
ED glass
At 18 mm
At 250 mm
100
100
80
80
60
60
40
40
20
20
0
3
6
9
12
0
3
6
9
12
Distance from optical center
Distance from optical center
of lens (mm)
of lens (mm)
Max. aperture
F8 aperture
Spatial frequency
R
T
R
10 line pairs/mm
30 line pairs/mm
R: Radial values T: Tangential values
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P mode, 1/125 sec., F5.6, +0.3 EV, ISO 100, Auto white balance, Portrait Creative Style; Photo: Norifumi Inagaki
Two ED glass elements and two aspherical elements for superior image quality
Extra-broad zoom range in a compact, lightweight lens
Circular aperture for attractive defocusing
Internal focusing for fast autofocus and short min. focus distance
35mm equivalent focal length: 27–375mm
Although similar to the SAL18200 in zoom range and performance, the
SAL18250 offers a bit more "reach" at the long end that can make a
significant difference if you're shooting sports or wildlife, for example.
The tradeoff is a small increase in weight and size, but if you need the
extra range the difference is worth it. You get the same outstanding
clarity and contrast from the wide 18mm end to full 250mm telephoto,
making this lens one of the most useful and versatile for APS-C format
cameras and an extremely wide spectrum of subjects.
• Weight (approx): 440 g
• Dimensions (Dia. x L): 75 x 86 mm
• Max. magnification ratio: 0.29x
T
A mode, 4 sec., F9.0, -1.0 EV, ISO 200, Daylight white balance; Photo: Kazu Kobayashi
Mid-range zoom
28–75mm F2.8 SAM SAL2875
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
At 28 mm
At 75 mm
100
100
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
80
80
wide range of situations you're likely to encounter in everyday shooting. The
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60
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,
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40
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
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20
bag consider taking the 75–300mm SAL75300 along as well: the SAL2875
0
4
8
12
16
20
0
4
8
12
16
20
plus SAL75300 combination gives you a full-frame focal length range from
Distance from optical center
Distance from optical center
28mm to 300mm.
of lens (mm)
of lens (mm)
• Weight (approx): 565 g
Max. aperture
F8 aperture
Spatial frequency
• Dimensions (Dia. x L): 77.5 x 94 mm
R
T
R
T
• Max. magnification ratio: 0.22x
10 line pairs/mm
30 line pairs/mm
R: Radial values T: Tangential values
* The SAL2875 received the
2010 TIPA Best Expert Lens award.
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