Teletor 120mm Lens for the Ducati Sogno

The Ducati Sogno 120mm Teletor Lens is the rough equivalent of a 135mm lens on a 'normal' full sized camera. This makes it a great choice for bringing far away subjects up close and personal.

"Slim" White SN 190gr

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"Fat Light" 270gr

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*The Gelatin Filters were only mentioned in the earliest documentation, and no pricing was mentioned. They are in various “Bright” colors, more intense than the normal glass filters, and much rarer.

The following table is a list of known Teletor Lenses with the Serial Number and possible number produced in our estimate. Please help us in our efforts to expand this list by sending us any lens serial number/s not in our list so that it will be as accurate as possible, thank you! Latest UPDATE: Nov-25.

NOTE: For the below table, work is ongoing to establish as clear as possible the variations and SN ranges for recent variant additions. Stay tuned!

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Fat Heavy-V1 "Knurled" 500gr

DUCATI - OD 6408.1 - TELETOR 120mm /5.6 (“Fat” version)

DUCATI - OD 6408.2 - TELETOR 120mm /5.6 (“Slim” Version)

The Teletor objective was referred to in the Ducati documentation as a "Telephoto lens for long distance photographs, architectural details, landscapes, panoramic views and animals in freedom. Suitable for sports also" and was already present in the earliest 1946 documentation.

It was of the non-retractable type, with an optical scheme consisting of 4 elements in two coated doublets, with a field angle of 14°, a minimum focusing distance of 3.0 meters on most of the original early Fat-V1 "Knurled" version, 3.6 meters on most of the later Fat-V2 version, and 3.8 meters on the Light-Fat version as well as both the Slim versions. All had an iris diaphragm with 12 blades and a choice between 5 possible openings (5.6-8-11-16-22)

For focusing, it was directly coupled with the Dream rangefinder, but the field of view did not correspond to that visible in the viewfinder so it was necessary to use the accessory sports viewfinder for correct framing.

In the 1948 catalog the Teletor lens was present at the price of 51,000 lire, and there were also some accessories listed (hood and filters) as well as the sport/view finder of the first type (OR 2401.1) suitable for use with both the Lator and Teletor lenses.

From the 1949 documentation the Teletor lens had a greater number of accessories including a different sports/view finder (OR 2401.2) that was also suitable for use with Lator, Eltor and Luxtor lenses.

Note: There were at least 3 different versions of finder 2401.1, and from our testing only the first 2 versions with the screw threads worked on the Knurled-V1 series, and these will not work on the later lenses. The third type of 2401.1, as well as 2401.2 (as yet unseen by us) 2404.1 and 2404.2 could all be used on the later series lenses only. (Fat Heavy-V2, Fat-Light, or Slim versions)

In 1950 the lens had a newly 'slim' designed external appearance, and also the Ducati code was changed to OD 6408.2. (Note: Some early Fat versions were also marked 6408.2 but we suspect this was by a careless worker) We must suppose that the optical scheme remained unchanged even though the company documentation did not give any specific information. Other characteristics were unchanged except the weight.This second type Teletor, the “Slim” Version, was much lighter at about 190 grams compared to about 500 grams of the early “Fat”. In our ongoing study we have determined that there were five distinct series produced as follows:

A first series (Fat Heavy-V1 "Knurled") with serial numbers starting with the numbers 040xx.

A second series (Fat Heavy-V2) with serial numbers between 040xx ~ 041xx.

A third series (Light-Fat) with serial numbers between 041xx ~ 042xx.

A fourth series (Slim White) with serial numbers between 042xx ~ 043xx.

A fifth series (Slim Red) with serial numbers between 352xx ~ 354xx.

Both the V1 & V2 "Fat" Versions used more Brass while the Light-Fat and Slim used more Aluminum. In photos all Fat versions are similar in appearance, except for the knurling and Close Focusing markings.

In some Ducati sales documents a maximum brightness of 1: 6.3 is also mentioned, but in reality we have never had occasion to observe Teletor lenses with that characteristic, we suppose it to be a “typo”.

Observing the serial numbers of a number of these lenses from those that we have been able to find please refer to the table below for details for our estimate of the number which may have been produced. You may also want to check our "Variations Table" at the bottom of the Lens History page.

Availability: This lens is seen for sale about once or twice a year.

"Slim" Red SN 190gr

Fat Heavy-V2 500gr