P5
P6
Designed to capture the optimum scope when used
with a digital SLR camera
36mm
24mm
43.27mm
Film
35mm Film
about 23.2mm
about 15.5mm
27.9mm
Digital SLR with smaller-size imager
35mm Film
Principal
point
Principal
point
Angle of view
75˚ 23'
Angle of view
52˚ 58'
Lights
Camera
Focal
point
Focal
point
Film/
Image Sensor
Same
Focal Length
28mm
Mirror
Image
sensor
General
Image Sensor
Focal Length
Imgaer taken with a digital
SLR with a smaller-size
imager are actually crop-
ped to about 70% scope.
*The general image sensors
(smaller-size imagers) are
about 24mm x 16mm.
However, the dimensions and
effective size differ depending
upon manufacturers.
18mm
28mm
Equivalent
50mm
78mm
Equivalent
35mm
54mm
Equivalent
100
mm
155mm
Equivalent
200
mm
300mm
Equivalent
Diagonal
75˚33'
Horizontal
65˚36'
Diagonal
31˚11'
Horizontal
26˚7'
Diagonal
15˚53'
Horizontal
13˚14'
Diagonal
7˚59'
Horizontal
6˚38'
Diagonal
43˚28'
Horizontal
36˚40'
Angles of View
Since the sizes of 35mm film format are different from
the image sensor of a digital camera, the scope of the
image captured is different even when focal lengths
are the same (i.e., angles of view differ).
The 18-200mm Di II is designed to capture optium
scope when used with a general digital SLR, espe-
cially at its wide angle side.
(designed for exclusive use on digital SLR cameras
with smaller-size imagers)
What does
mean?
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