Sony ALC-F62A - Manual (Page 13)

High magnification zoom
DT 18–250mm F3.5–6.3 SAL18250
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
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
Aspherical lens ED glass
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0 3 6 9 12
Contrast
(%)
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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 18 mm At 250 mm
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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20
Co
nt
ra
st
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%)
100
80
60
40
20
Co
nt
ra
st
(
%)
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
P mode, 1/125 sec., F5.6, +0.3 EV, ISO 100, Auto white balance, Portrait Creative Style; Photo: Norifumi Inagaki
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