Polaroid Macro 3 SLR manual Camera Specifications

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Camera Specifications

	Lens to subject	Lens Focal	Effective
Magnification 1	distance	length 2	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

1If 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.

2The 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.

3The 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.