Sony ALC-F62A - Manual (Page 18)

Mid-range telephoto
DT 50mm F1.8 SAM SAL50F18
On APS-C format cameras, for which it is specifically designed, the
SAL50F18 functions as a moderate telephoto lens (equivalent to 75mm on
a full-frame camera) that can be ideal for shooting portraits as well as for
framing and isolating areas of interest in broader, busier scenes. Not only
can you isolate the desired subject matter by framing, but you can also
take advantage of the lens’s large F1.8 maximum aperture and circular
aperture design to isolate your subject from the background by using
defocusing. The large maximum aperture also facilitates shooting in low
light, a capability that is further enhanced by SteadyShot INSIDE™ image
stabilization featured in a series bodies.
• Weight (approx): 170 g
• Dimensions (Dia. x L): 70 x 45 mm
• Max. magnification ratio: 0.2x
Compact, lightweight and eminently portable
Circular aperture for attractive defocusing
Responsive internal SAM (Smooth Autofocus Motor) autofocus drive
Bright enough for handheld shooting in low light
35mm equivalent focal length: 75mm
100
80
60
40
20
0 3 6 9 12
Distance from optical center of lens (mm)
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
At 50 mm
Mid-range telephoto
85mm F2.8 SAM SAL85F28
Photographers often choose a large-aperture 85mm lens for portraits for
two compelling reasons. First, the 85mm focal length makes it easy to fill
the frame with the subject from a comfortable distance, without getting
so close that unflattering distortion occurs. And second, a large maximum
aperture works with the medium-long focal length to create beautifully
defocused backgrounds, so that the subject seems to “pop” out of the
image. The SAL85F28 is just such a lens. But it’s not just limited to portraits. It’s
a great choice for any situation where you want a bit more magnification
than a “standard” focal length provides. And the fact that it is light and
compact means that it’s easy to take along as a second lens.
• Weight (approx): 175 g
• Dimensions (Dia. x L): 70 x 50 mm
• Max. magnification ratio: 0.2x
Compact, lightweight and eminently portable
Excellent corner-to-corner sharpness
Large maximum aperture plus circular aperture design for smooth defocusing
Responsive internal SAM (Smooth Autofocus Motor) autofocus drive
Distance from optical center of lens (mm)
Contrast
(%)
100
80
60
40
20
0 4 8 12 16 20
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 85 mm
M mode, 1/800 sec., F8, ISO 400, Auto white balance M mode, 1/640 sec., F2.8, -0.3EV, ISO 200, Manual white balance
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