General Information

Serial #

69334

Part Number

1

Total Parts

3

AKA

N/A

Patents

N/A

General Description

.1 BRASS CASING; GLASS OPTICS;.2 MAHOGANY LENS BOARD; METAL SCREW MOUNTING RING.3 WOODEN FORM HAS IMITATION LEATHER COVERING; BLACK VELVET LINING.

Dimensions

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

Length

11.0 cm

Width

11.0 cm

Height

12.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Photography

Category

Still camera parts

Sub-Category

N/A

Manufacturer

AKA

Ross

Country

England

State/Province

Unknown

City

London

Context

Country

Canada

State/Province

Unknown

Period

THIS TYPE OF LENS USED C. 1900-1930S+

Canada

QUALITY PHOTOGRAPHIC LENS SOLD IN CANADA BY UNITED PHOTOGRAPHIC STORES, LTD. LENS IS PART OF A.M. HARDY COLL'N. ARCHIBALD HARDY OPERATED PHOTO STUDIO ON SPARKS ST., OTTAWA IN 1930S. FOLLOWING WAR SERVICE, HE EST'D A STUDIO IN VANKLEEK HILL, ONT. WHERE HEWORKED AS A HIGH SCHOOL TEACHER. HE SPECIALIZED IN WEDDING & PORTRAIT PHOTOGRAPHY. MR. HARDY CLOSED HIS STUDIO IN 1952. (REF. 1)

Function

TO BEND LIGHT RAYS TO CREATE IMAGE WHICH IS RECORDED ON FILM IN CAMERA.

Technical

ROSS HOMOCENTRIC LENS CONSISTS OF 2 AIR SPACED ELEMENTS IN EACH HALF. THE RESULT IS AN ANASTIGMAT WITH AN IMPROVED FIELD CURVATURE AND BETTER ASTIGMATISM CORRECTION, AS COMPARED TO ANY RAPID RECTILINEAR LENS. CONSTRUCTION APPROXIMATES A WIDE ANGLE, BUT THE HOMOCENTRIC IS NOT A TRUE WIDE ANGLE LENS. (REF. 1)

Area Notes

Unknown

Details

Markings

.1 "No 69334. ROSS, LONDON." incised on one side of casing; f stops 5.6, 8, 11, 16, 22 incised on sliding scale. "18 IN HOMOCENTRIC 1:5.6/ PATENT/ THE UNITED PHOTOGRAPHIC STORES LTD, CANADA" incised on reverse..2 "HARDY" handwritten in red grease pencil on back of lens board..3 No markings visible.

Missing

NONE.

Finish

.1 BRIGHT LACQUERED BRASS LENS BARREL HAS BLACK INTERIOR, AND END RIMS. INCISED MARKINGS HIGHLIGHTED IN BLACK..2 LENS PANEL FACE IS RED-BROWN POLISHED WOOD; INTERIOR SURFACE PAINTED BLACK. FLAT SILVER METAL MOUNTING RING..3 BLACK PEBBLE-TEXTURED IMITATION LEATHER COVERING; BLACK VELVET LINING.

Decoration

N/A