20
21
Icons:
Circular aperture
Internal focusing
Focus Hold Button
Focus Range limiter
ADI flash metering
SSM (Super sonic wave motor)
• For details, please refer to the
Lens Technology section on p.26–28.
Unparalleled quality has long been the hallmark of Carl Zeiss
lenses. And now, over 160 years of optical expertise has been
distilled into a series of mount lenses, jointly developed
by Carl Zeiss and Sony. With exclusive
T*
(“T-star”) coating
technology for higher light transmission, and minimal flare
and ghosting. With marvelously faithful and luminous colors.
And with extreme compensation of various optical
aberrations. Discover some of the world’s finest lenses, and
unlock your true artistic potential.
Carl Zeiss
®
Lenses
20
Modulation Transfer
Function (MTF)
MTF is a measurement of how well a lens
can reproduce fine details at a high
level of contrast. The curves below show
lens performance at two levels of spatial
frequency (10 or 30 line pairs/mm) for two
types of targets (radial R, tangential T).
Performance is measured at two settings:
open and F8. For each condition, contrast
level changes at various points away from
the center of the image.
SAL85F14Z
Planar
T*
85mm F1.4 ZA
Lens groups/elements: 7/8
Minimum focus: 33-1/2” (0.8 m)
Filter diameter: 72 mm
Size: (diameter x length): 3-3/16 x 2-1/16”
(81 x 7 mm)
Weight: 1 lb 6.6 oz (60 g)
Among the finest choices for portrait photography. The Carl Zeiss
Planar
T*
lens for
digital SLRs is a new-generation model that
allows gorgeous portraits to be captured at a relaxed distance from
the subject, while providing superior image clarity and also smooth,
natural defocusing that adds depth to your portraits. Optimum
handling is ensured by features such as a focus hold button to lock
focus and a focus ring that does not rotate during AF operation. With
its large aperture, the SAL8F1ZA is ideal for handheld shooting in
low light, especially when used in conjunction with Super SteadyShot,
the in-camera image stabilization system of the
digital SLR.
•
•
•
•
•
SAL8F1Z (Planar
T*
8mm F1. ZA)
Carl Zeiss Lenses
Aspherical lens
MTF Open
MTF F8
R20 line pairs/mm
T20 line pairs/mm
R0 line pairs/mm
T0 line pairs/mm
Distance from center of image (mm)
Contr
ast (%)
R10 line pairs/mm
T10 line pairs/mm
(R: radial target, T: tangential target)
Distance from center of image (mm)
Contr
ast (%)
For details of MTF, please refer to p17.
100
80
60
0
20
0
8
12
16
20
100
80
60
0
20
0
8
12
16
20
