Sigma APO - TECHNICAL SPECIFICATIONS

TECHNICAL SPECIFICATIONS
ENGLISH
Lens construction
17-22
Filter Size
77mm
Angle
of
View
34.3-
12.3°
Minimum Aperture
22
Dimensions
Dia.
X
Length
86.4X197.6mm
(3.4X7.78
in)
Minimum
Focusing
Distance
1.4m (4.6 ft)
Magnification
1:8
Weight
1430g
(50.4 oz)
Dimensions and weight include
the
SIGMA
mount.
• APO lenses
use Special Low Dispersion
glass. This
special glass normally
has some tiny air
bubbles but it does not affect the
optical
performance.
• The
glass materials
used in the lens
do
not contain
environmentally
hazardous
lead
and arsenic.