Sony ALC-F62A - Manual (Page 12)

Mid-range zoom
DT 18–55mm F3.5–5.6 SAM SAL1855
If you’re the kind of photo enthusiast who likes to carry a camera at all times,
whether actively shooting or not, you probably want one small, lightweight
lens that won’t be a burden while walking around but will deliver top quality
and versatility when a photographic opportunity arises. The SAL1855 is the
smallest and lightest zoom in this series, weighing in at only 210 grams while
offering an 18–55mm focal length range that will cover most day-to-day
subjects. It also features a minimum focusing distance of just 25 centimeters
that, combined with 0.34x maximum magnification, will let you get close
and explore details. If you want to be prepared for a wider range of subjects
the SAL1855 is the perfect companion for the SAL55200-2, the pair providing
excellent optical performance from 18mm to 200mm.
• Weight (approx): 210 g
• Dimensions (Dia. x L): 69.5 x 69 mm
• Max. magnification ratio: 0.34x
One ED glass element and two aspherical elements for superior
image quality
0.25m min. focus plus 0.34x max. magnification for close-ups
Responsive internal SAM (Smooth Autofocus Motor) autofocus drive
Circular aperture for attractive defocusing
35mm equivalent focal length: 27–82.5mm
Aspherical lens ED glass
A mode, 1/80 sec., F5.6, ISO 100, Daylight white balance; Photo: Norifumi Inagaki
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 18 mm
100
80
60
40
20
0 3 6 9 12
Contrast
(%)
Distance from optical center
of lens (mm)
At 55 mm
High magnification zoom
DT 18–200mm F3.5–6.3 SAL18200
It will take you from a wide scene-spanning 18mm to far-reaching
200mm telephoto that will let you zoom in on distant subjects, yet the
SAL18200 weighs only 405 grams and is no larger than many zooms
of more limited range. For these reasons it is an excellent choice for
photographers who want to cover as many situations as possible
without having to change lenses. In addition to being an outstanding
one-lens solution, it features a refined optical design that ensures
excellent sharpness and contrast throughout the image at all focal
lengths, so you can shoot with confidence in any situation that arises.
• Weight (approx): 405 g
• Dimensions (Dia. x L): 73 x 85.5 mm
• Max. magnification ratio: 0.27x
Two ED glass elements and three aspherical elements for superior image quality
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: 27–300mm
Aspherical lens ED glass
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 18 mm At 200 mm
S mode, 1/250 sec., F6.3, +1.0 EV, ISO 3200, Auto white balance; Photo: Shinya Morimoto
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