General Information

Serial #

N/A

Part Number

1

Total Parts

3

AKA

N/A

Patents

N/A

General Description

METAL RINGS; GLASS FILTER

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

N/A

Width

8.1 cm

Height

2.2 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Photography

Category

Still camera accessories

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

Union of Soviet Socialist Republics

State/Province

Unknown

City

Unknown

Context

Country

Worldwide

State/Province

Unknown

Period

PROBABLY 1960'S

Canada

PART OF A COLLECTION OF PHOTOGRAPHIC EQUIPMENT FROM THE ESTATE OF WILFRED HAROLD OLSON, FOUNDER AND PRESIDENT OF DOMINION WIDE PHOTOGRAPHY LTD., OTTAWA (C 1950-1995). MR. OLSON WAS A PHOTOGRAPHER FOR MANY YEARS AND HIS STUDIO DID WORK FOR BOTH THE OTTAWA JOURNAL AND THE CBC.

Function

USED, WHEN ATTACHED TO A CAMERA LENS, TO ENHANCE OR REDUCE THE CONTRAST OF CERTAIN PORTIONS OF THE SUBJECT BEING PHOTOGRAPHED WHEN USING A BLACK AND WHITE FILM.

Technical

THE YELLOW FILTERS REDUCE BACKGROUND BLUE, ACCENTUATES THE OTHER COLOURS. BRINGS OUT CLOUDS IN A BLUE SKY. THE ORANGE FILTER REDUCES BLUE AS WELL AS GREEN. IT BRIGHTENS YELLOW,ORANGE AND RED, AND NOTICEABLY DARKENS GREEN. [REF 1]

Area Notes

Unknown

Details

Markings

PRINTED ON RINGS:.1 [RUSSIAN LETTER]C-12 [C IN TRIANGLE IN CIRCLE] 77X0.75'/.2 OC-14 [C IN TRIANGLE IN CIRCLE] 77X0.75'/.3 [RUSSIAN LETTER]C-18 [C IN TRIANGLE IN CIRCLE] 77X0.75'

Missing

COMPLETE

Finish

ALL HAVE BLACK RINGS WITH WHITE PRINTING..1 AND.3 HAVE YELLOW TINTED GLASS;.2 HAS ORANGE TINTED GLASS

Decoration

N/A