General Information

Serial #

N/A

Part Number

1

Total Parts

5

AKA

N/A

Patents

N/A

General Description

METAL RINGS WITH GLASS FILTERS

Dimensions

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

Length

N/A

Width

7.5 cm

Height

N/A

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

Unknown

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 AFFIXED TO A CAMERA LENS, TO ENHANCE OR REDUCE THE CONTRAST OF CERTAIN PORTIONS OF THE SUBJECT BEING PHOTOGRAPHED.

Technical

THE YELLOW FILTER REDUCES BACKGROUND BLUE, ACCENTUATES THE OTHER COLOURS. THE ORANGE FILTER REDUCES BLUE AS WELL AS GREEN. IT BRIGHTENS YELLOW, ORANGE & RED, AND DARKENS GREEN. THEGREEN FILTER REDUCES BLUE AND RED. [REF 1]

Area Notes

Unknown

Details

Markings

PRINTED ON RINGS:.1 'OC-12 72X0.75';.2 '[RUSSIAN LETTER]C-17 72X0.75';.3 [RUSSIAN LETTER]3C-9 72X0.75';.4 &.5 [RUSSIAN LETTER]C-10 72X0.75'

Missing

N/A

Finish

ALL HAVE GREY RINGS WITH BLACK INTERIORS AND BLACK PRINTING..1 ORANGE TINTED GLASS;.2 YELLOW TINTED GLASS;.3 GREEN TINTED GLASS;.4 &.5 SLIGHTLY GREY TINTED GLASS; GREY CAP

Decoration

N/A