Sony NEX-C3A Especificaciones - Página 15
Navegue en línea o descargue pdf Especificaciones para Cámara digital Sony NEX-C3A. Sony NEX-C3A 35 páginas. Dslr cameras and lenses for dslr camera
También para Sony NEX-C3A: Manual de funciones (7 páginas), Folleto y especificaciones (7 páginas), Garantía limitada (1 páginas)
Fixed Focal Length Lenses
Fixed focal length lenses, commonly known as "prime lens"
or simply as "primes," can complement your photographic
vision in a number of ways. Although most of the focal
lengths offered are also available with zoom lenses, some
special-purpose lenses are only available as primes: fisheye
lenses and most true macro lenses are examples. And
since the optical path only needs to work at one focal
length, it can be optimized to deliver a level of optical
performance that is a cut above the average zoom. But
many photographers like working with a fixed focal length
simply because it always gives them the same angle of view
and perspective, making it easier to pre-visualize what the
camera will see and thus providing the most consistent,
intuitive shooting experience.
A mode, 1/200 sec., F7.1, -0.3 EV, ISO 200, Auto white balance; Photo: Yuji Nukui
Fisheye
16mm F2.8 Fisheye SAL16F28
180° angle of view on full-frame cameras
Curvilinear perspective for unique, expansive images
Crisp image quality throughout the focus range
Four selectable internal filter settings
At 16 mm
100
Once a scientific tool but now a favorite of creative photographers,
fisheye lenses forgo the restraints of rectilinear perspective—the
80
complex "correction" that is required to keep straight lines looking
straight—to deliver expansive images that cover an extremely wide
60
angle of view with curvilinear perspective. The SAL16F28 provides
an extremely wide 180° angle of view on 35mm full-frame format
40
cameras ( 110° on APS-C format cameras ) . In addition to eye-catching
20
interpretations of reality, it offers extended depth of field so that you
can capture huge vistas in which everything from 20 centimeters to
0
3
6
9
12
20
infinity is sharp, even at maximum aperture. Since the bulging front
Distance from optical center of lens (mm)
element and wide angle of view prevent the use of external screw-in
Max. aperture
F8 aperture
filters, four selectable internal filter settings are provided: normal, O56
Spatial frequency
R
T
R
T
monochrome, B12 red reduction and A12 blue reduction.
10 line pairs/mm
30 line pairs/mm
• Weight (approx): 400 g
R: Radial values T: Tangential values
• Dimensions (Dia. x L): 75 x 66.5 mm
• Max. magnification ratio: 0.15x
29