Eastman Kodak
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Television Ektanon Data Sheets
From the SMECC Archives.

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LENSES FOR USE WITH TELEVISION STUDIO CAMERAS

Four Kodak Ektanon lenses* of different focal lengths are supplied to the television industry for use on television studio cameras of the image orthicon type. These lenses were designed originally for use with precision-built miniature cameras where excellent optical performance is a requisite. Their focal lengths and high degree of correction also make them ideally suited for use with television pickup cameras of the image orthicon type where high optical quality is demanded. They

are capable of giving excellent resolution and sharpness and are particularly well corrected for lateral and longitudinal chromatic aberration. Inner air-glass surfaces are Lumenized to reduce reflections, thereby improving shadow details and brilliancy in the image for both black-and-while and color television work. Further technical details concerning these lenses are given below.

KODAK TELEVISION EKTANON f/1.9 50mm

The high speed and normal focal length of this lens meets the requirements of a great range of television camera situations and conditions. This lens is especially useful under extremely unfavorable light conditions. In addition to its use on cameras of the image orthicon type, it has also found application in color television work with flying spot scanners.

Recommended Maximum

Angle of View:When focused for infinity, 27x40 
Focusing Range:Two-phase scale - Infinity to
3 1/2 feet and 3 feet to I 1/2 feet.
Attachment Size:No. 24 Adapter Ring and Series
VI Attachments.

Depth of Field Scale: Engraved on mount.

 

KODAK TELEVISION EKTANON f/3.3 35mm

This wide angle lens serves outstandingly when it is desired to include a large portion of the subject in the picture; it is especially advantageous when working in close quarters. Due to its short focal length, this lens has a greater depth of field than the others.

Recommended Maximum 

Angle of View: 38x55
Attachment Size: No. 26 Adapter Ring and Series VI Attachments.

* These lenses are available from manufacturers of television equipment but not through Kodak dealers.

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'KODAK TELEVISION EKTANON f/3.5, 90mm

With its moderately long focus, this lens gives large, sharply detailed images of semi-distant subjects without unnatural perspective.

Recommended Maximum

Angle of View: When focused for infinity, 15x23
Focusing Range: Infinity to 3 1/2 feet.
Attachment Size: Series V Adapter Ring Insert and Series V Attachments or Series V - VI Step-up Ring and Series VI Attachments.

KODAK TELEVISION EKTANON f/3.8, 135mm

This long focal length lens is useful for obtaining enlarged images of very distant subjects or wherever it is desired to obtain a larger image of the subject or portion there of without changing the camera position.

Recommended Maximum

Angle of View: When focused for infinity, 10x15
Focusing Range: Infinity to 4 feet.
Attachment Size: Series VI Adapter Ring Insert and Series VI Attachments.

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Ektra Lenses that also fit RCA and other turrets

DESC
LENS

CAMERA/SHUTTER/
MOUNT

LENS TYPE
NOTES
f/1.9 50mm Ektra/Special Barrel/Focal Plane Biotar
7-element
No 24 screwin adapter ring, Ser VI.
Earliest versions had calcium fluoride coating; later may have had magnesium fluoride. Two phase focusing: 3'-inf; 1.5'-3'
f/3.5 50mm Ektra/Special Barrel/Focal Plane Modified Tessar No 25 screwin adapter ring, Ser VI.
Earliest versions had calcium fluoride coating; later may have had magnesium fluoride. Two phase focusing: 3'-inf; 1.5'-3'
f/3.3 35mm Ektra/Special Barrel/Focal Plane Heliar No 26 screwin adapter ring, Ser VI.
Earliest versions had calcium fluoride coating; later may have had magnesium fluoride. Two phase focusing: 3'-inf; 1'-3'
f/3.5 90mm Ektra/Special Barrel/Focal Plane . Ser V=> Ser VI stepup ring, Ser VI.
Earliest versions had calcium fluoride coating; later may have had magnesium fluoride.
f/3.8 135mm Ektra/Special Barrel/Focal Plane Tele-Tessar Ser VI retaining ring, Ser VI.
Earliest versions had calcium fluoride coating; later may have had magnesium fluoride.
f/4.5 153mm Ektra/Special Barrel/Focal Plane Tele-Tessar Ser VI retaining ring, Ser VI.
Earliest versions had calcium fluoride coating; later may have had magnesium fluoride.

The following still camera lenses were documented in the Kodak Reference Handbook - Lenses, Rangefinders and Shutters section, 1942, 1945. This is the most inclusive edition of this material, encompassing both older and newer models from the late 1930s through 1945. It does not include any information about hardcoating or Lumenizing.


Data  from the above chart obtained was obtained from http://www.bnphoto.org/bnphoto/KodakID_db1.htm. 
Thanks to Brian Wallen  for  his research work on Eastman Kodak Products. -Ed Sharpe

 

 
 

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