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Sony SLT-A57M Especificações
A mode, 1/400 sec., F4.5, ISO 200, 5300K color temperature; Photo: Chukyo Ozawa
Telephoto
135mm F2.8 [ T4.5 ] STF SAL135F28
At 135 mm
100
80
60
40
20
0
3
6
9
12
Distance from optical center 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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Unique Smooth Trans Focus design featuring apodization optics
Sharp in-focus areas with extra-smooth background and
foreground defocusing
Smooth, natural highlight diffusion
Manual focus and manual aperture ring
This unique lens has been specifically designed to deliver smooth
transitions between crisp in-focus areas and creamily defocused
background and foreground areas. It uses special apodization* optics
to produce images that seem to have an extra dimension, with high
resolution at the plane of focus, gradually melting away to beautifully
diffused out of focus rendition. With some lenses highlights in defocused
areas can be distracting, but with this unique Smooth Trans Focus design
they retain their natural shape in a way that doesn't detract from the
defocused background or foreground, and there's no ugly double-line
20
defocusing. The SAL135F28 promises a one-of-a-kind photographic
experience. A manual aperture ring is provided for direct, hands-on
defocusing control.
T
• Weight (approx): 730 g
• Dimensions (Dia. x L): 80 x 99 mm
• Max. magnification ratio: 0.25x
* "Apodization" is the technical term for changing the shape of a mathematical
function; in this case the optical transmission characteristics of the lens.
• For details of STF technology. See pg.17.
P mode, 1/200 sec., F4.5, ISO 100, Auto white balance; Photo: Kentaro Fukuda
Macro
DT 30mm F2.8 Macro SAM SAL30M28
2cm working distance lets you get really close
Precision optics deliver excellent sharpness and contrast
Compact, lightweight, portable design
Responsive internal SAM (Smooth Autofocus Motor) autofocus drive
35mm equivalent focal length: 45mm
At 30 mm
100
If you shoot with an APS-C format camera and want a lightweight,
compact lens that will handle snapshots and portraits plus macro
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photography as well, this is it. The 35mm equivalent focal length of this
lens is a distinctly "normal" 45mm, making it a good choice for general
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photography. But when an exquisite little detail catches your eye, you can
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move in as close as 2 centimeters from your subject to capture macro
images with up to 1:1 magnification. The details you focus on will be
20
astonishingly sharp, while the out-of-focus background dissolves into a
creamy blur that can really make the details stand out. The SAL30M28 is
0
3
6
9
12
only 45 millimeters long and weighs a discreet 150 grams, so it can stay
Distance from optical center of lens (mm)
on your camera or in your bag at all times without getting in the way.
Max. aperture
F8 aperture
Spatial frequency
• Weight (approx): 150 g
R
T
R
T
• Dimensions (Dia. x L): 70 x 45 mm
10 line pairs/mm
• Max. magnification ratio: 1.0x
30 line pairs/mm
R: Radial values T: Tangential values
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