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8 English
1
If the exact magnification must be documented, include a scale in the picture (18). The scale and the subject
must be at the same distance from the camera.
2
The camera contains separate lenses for the magnification. Each lens has the proper focal length for mini-
mum perspective distortion and more working space between the camera and subject, and a small lens aper-
ture for better depth of field.
3
The depth of field, or distance zone within which the subject will be in sharp focus, is limited in close-up
photography. The zone will extend about half its distance in front of, and half behind, the point of sharpest
focus.
Note: The camera has a fixed shutter speed of 1/50 sec.
Camera Specifications
Magnification
1
Lens to subject
distance
Lens Focal
length
2
Effective
lens aperture
Depth of field
3
1X (100%) 9.9 in./25cm 128mm f/47 0.86 in/2.2cm
2X (200%) 4.8 in./12cm 85.4mm f/67 0.31 in./0.8cm
3X (300%) 3.1 in/8cm 64mm f/100 0.20 in./0.5cm