​​​​​This section is a work in progress, the research continues...

Here we will try to inform you of any new information we find which may be of help to the Sogno collecting community. We are not yet sure where this will take us, but let's find out!

Article 1, Oct. 2025 (Lens Variations-A New Lator & Teletor):

We spend a lot of time doing research, especially regarding the Sogno lenses these past few years. (A Retirement benefit or a curse?) This could never have happened without the help of other great collectors who have given us their time to help us in identifying the differences of some series. I have mentioned the collectors names who have helped in other places on the website already, but special thanks once again to Antonio Rossetto for his keen observations. With his (and others) help, we have so far identified the following:

• Argon Lens:  The production of a small batch of lenses (only 3 found so far) produced early with the SN in Black on the Helicoid. All others with Red SN on the lever. (Consonni)
  
  
• Dugon Lens:  The production of a small batch of lenses (only 3 found so far) produced early with the SN in Black on the Helicoid. All others with Red SN on the lever. (Consonni)
  
  
• Eltor Lens:  The difference in Height and Weight between the first "Tall" and second "Short" series. It is noted that there are about twice as many of the second series known. (Rossetto)
  
  
• Fitor Lens:  Until the acquisition of our first Fitor in the "Adriano Set" about ten years ago, these lenses were only a rumor mentioned in the early documentation. We also found a second one in 2021. (Bazzoli)
  
  
• ​Lator Lens:  When we began our collection there were the "Heavy" and the "Light" versions known to most. Since then we have added the "Med. Light" version made near the end of production (Bazzoli), and recently the newly added "Knurled" version made at the very start of production. (Rossetto) Further research (lens data) is needed to confirm the Med. Light" version as the SN's of the last portion of the Lator's (Light & Med. Light) show a mix of types within that range. It is possible that near the end of production older brass parts were included, raising the weight of the "Med. Light" and so, was not a new design, just an anomaly. Or, they could have found that an aluminum part was not working well and needed a re-design? Perhaps somebody with all three will take them to an expert for dis-assembly to study them. We have them, but here in Thailand there are no expert Ducati technicians. There is also some mixture of SN's of the "Knurled" and later V2 Lator & Teletor lenses, not a clear-cut start-stop point. 
  See the Lator  lens page for additional details of the 4 known variations.
  
  
• Luxtor Lens: To our knowledge, only the the early White and later Red serial number variations exist, although we have seen photos (Dario-Yamane) of a strange front ring. 
  ​
  
• ​​Teletor Lens:   When we began our collection there were the "Fat" and the "Slim" (Red & White) versions known. Since then we have added the "Light-Fat" version made near the end of Fat production, and recently the newly added "Knurled" version made at the very beginning of production. (Bazzoli et al)
  There have also been other reported small variations such as: 1) For the size (height) and appearance of marking or serial number ring stamps. 2) Some early "Fat" lenses seem to have been stamped in error as OD 6408.2 (which was later used for the "Slim") instead of OD 6408.1. We consider these cosmetic or errors only, not new variations. But they are "interesting" and perhaps unique.
  See the Teletor  lens page for additional details of the 5 known variations.
  
  
• Edit for both the Lator & Teletor: Further investigation of our lenses revealed that for the "Knurled" V1 versions of both of these lenses, the Close-Focusing distance on both were different than all later versions, including the V2, further validating the new designation. The Knurled Lator-V1 CF distance is 1.2M while all others, including V2, are 1.5M. The Knurled Teletor-V1 CF distance is 3M while the V2 is 3.6M and all later versions are 3.8M. It is further noted that, in what was seemingly common in the Ducati factory, there is not a clearly defined start-stop point between the variations. Therefor we cannot give an exact separation point (in serial numbers) but rather a range where there is some overlap.  Further, parts seem to have been randomly used so that on a few of each variation, the Close Focusing distance and or Knurled vs Normal grip, is not standardized. This results in additional confusion as, for example, some Teletor V1's have a 3.6M CF distance, and some Lator V1's have a 1.5M CF distance. Mama mia, my head is spinning :-) If we are able to obtain more lens details from other collectors, we hope there will be a little more clarity.
  

A final note about the early "Knurled" versions of the Lator & Teletor: While many of us had probably noticed a difference in the texture of the bottom grip area on some, it was Antonio who realized that this was not just a cosmetic adjustment, which was not worthy of a new variation, but rather a screw threaded knurling needed for the early screw-on Sports Finders, (similar to the knurled filter/hood threads) making them unique. Here are photos to show the different bottom grip, and the proposed naming of these Variants:

​

​For additional information and photographs refer to each lenses dedicated page, and for the complete listing of Variants visit our Sogno Lens History page. 

----------End----------

​

Article 2, Nov. 2025 (View Finder Variations):

Due to the discovery of the "Knurled" versions of the Lator & Teletor discussed above, we have spent additional time reviewing the various finders in order to better understand their differences. We have so far identified the following models and their variations:

• Sports Finder OR 2401.1: There appear to have been at least two different versions of this Albada type  finder using the same code number. Ours, the earliest version of it, does not include the thumb screw at the bottom, refer to photo below. A second version with the bottom thumb screw can be seen HERE at Dario's website. Both of these early  types will only work on the "Knurled" version of the Lator & Teletor.
  Edit:   Once again Antonio has provided additional information from his extensive collection. There now appear to be three separate and distinct variations of this finder, all with the same Code number OR 2401.1. This third version is similar in appearance to our OR 2404.1, with the same 'centering rod' between the two upper connecting posts, but without the 40mm framelines added. This 'centering rod' (on our 2404.1) prevents its' use on the "Knurled" version and Antonio confirmed it is the same case on his 2401.1, third version. It was a no-go. If you are a little confused by now, join the club! :-)
  
  
• Sports Finder OR 2401.2​: We have yet to see this version though Donato had mentioned seeing it in the 1949 documentation. Should anyone have this finder we would appreciate a photo or three, thanks!
  
  
• Sports Finder OR 2404.1​: This intermediate version includes the 40mm framelines for the Eltor & Luxtor as well as the 60 & 120mm. From our testing it will not work on the "Knurled" versions of the Lator & Teletor due the the interference of the centering rods' nib. (see photos)
  
  
• ​Sports Finder OR 2404.2​: This is the final and most seen version. It includes the 40mm framelines for the Eltor & Luxtor as well as the 60 & 120mm. From our testing it will not work on the "Knurled" versions of the Lator & Teletor due to the centering "nib" (see photos).
  ​
  

There may be other slight variations other than those shown above, time will tell.

​

​​

​​

​

Wide Angle Finder OR 2403-1​:  There are two versions of this finder, both with the same code number and they are quite similar. The primary difference is that the front sight of the later iteration is painted Black. We assume this is for better visibility during use. It is interesting that on the early version of this one, as well as the earliest Sports type above, there is a pad of what appears to be the same material as the body covering, glued to the bottom part which would rest on the Sogno's top plate, no doubt to avoid scratching. Just a small thing which shows the extra attention to detail in the early days, when the Ducati brothers were still in control. Note that the early non-painted version is rarely seen.

​

----------End----------

​

​

(All of the above is subject to change as additional information becomes available. And, should you know of any earlier published articles or books where any of the above Variations may have already been described, please forward us a link (or info) so that we may give proper credit to the discoverer. And, as always, if you have any information to share to expand the collecting communities knowledge, please contact us! Thank you.)