Camera lens attachment to aid focusing

Details Camera lens attachment to aid focusing Camera lens attachment to aid focusing

1993-12-07

1995-05-16

Blankenship, Howard B.

354293, 354295, G03B 2900

Patent

active

054165440

ABSTRACT:
An attachment for the lens of a camera to facilitate macro photography. The device comprises a clear plastic tube, manufactured to the precise length required to achieve 1:1, or other desired close-up ratio, focusing for a given camera. The plastic tube is provided with a step-up ring at one end to provide a means for threaded attachment to the camera lens. The device is then screwed onto the lens of a camera to take close range photos.

REFERENCES:
patent: 5285226 (1994-02-01), Frosig et al.

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