Monday, March 9, 2026

LEICA AND TELEPHONES



By Heinz Richter

What if...?  How often have we contemplated certain occurrences in the light of what has or hasn't happened?

That certainly is the case with Leica as well.  Most cell phones these days have evolved to fairly capable cameras as well.  As a matter of fact, they have all but wiped out the market for small, digital point and shoot cameras.  Yet many could never imagine that Leica would be even remotely interested in this market segment.

Yet this is exactly what has happened.  It is a known fact that Leica used to colaborate with the Chinese company of Huawei to develop camera and lens systems for their top level cell phones. Even Panasonic showed a cell phone of their own which was equipped with a Leica lens.

The Huawei Mate 40 Pro, a result of the Leica/Huawei cooperation

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Panasonic cell phone with Leica lens

A new venture started with the Leitz Phone 1, developed initially just for the Japanese market. Designed by their own design studio in Germany, the Leitz Phone 1 follows their commitment to reducing to the essentials with clear, minimal, and intuitive handling characteristics. Crafted from the highest quality materials as signaled by the Leica logo, its aluminum case in anodized silver is elegantly combined with matt-black Gorilla-glass.


Since its introduction, it has evolved to the Leica Leitzphone, based on the Xiaomi 17 Ultra,a revolutionary imaging tool, crafted by Leica, powered by Xiaomi.


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Yet there was a connection between Leica and the telephone much earlier in history.  In a book by W. Erb about the Leitz (Leica) company is a short paragraph with a transcript from a newspaper article that translates as follows:

“On September 1864, the 39th meeting of the German Naturalists and Physicians took place in Giessen.(Giessen is a town very close to Wetzlar)  Particular efforts were made to remain competitive during the subsequent exhibition of microscopes.  For the young mechanic (Ernst Leitz) there was a special task.  Phillip Reis planned to demonstrate his invention, the telephone, since his first try in Frankfurt on October 16, 1861, had failed.  Ernst Leitz successfully completed the preliminary work with the help of his technical knowledge, so that on September 21, 1864, the final recognition was not denied the inventor.”

File:JPReis.jpg
Phillip Reis

File:Johann Philipp Reis telephone.jpg 
Reis' Telephone

 
Ernst Leitz
Photograph with the Ur-Leica by Oskar Barnack

After reading that short paragraph one has to wonder: What if Ernst Leitz had become interested in telephones?  Could there have been a Leitel (Leitz Telephone)?  Considering the fact that Ernst Leitz did not start his work at the Wetzlar Optical Institute until 1865, this seems to be a possibility.

It is also interesting to note that Alexander Graham Bell did not show his invention of the telephone until 1876, twelve years later, yet he is generally credited with the invention of the telephone.   The above account very much proves that this is not at all the case.

 
Alexander Graham Bell

Besides Reis and Bell, many others claimed to have invented the telephone. The result was the Gray-Bell telephone controversy, one of the United States' longest running patent interference cases, involving Bell, Thomas Alva Edison, Elisha Gray, Emil Berliner, Amos Dolbear, J. W. McDonagh, G. B. Richmond, W. L. Voeker, J. H. Irwin, and Francis Blake Jr. The case started in 1878 and was not finalized until February 27, 1901.  However, regardless of the claims by Bell and others, nobody demonstrated a working telephone prior to Phillip Reis.


  For other articles on this blog please click on Blog Archive in the column to the right

To comment or to read comments please scroll past the ads below.

All ads present items of interest to Leica owners.

_______________________________________________________________________

EDDYCAM - the first and only ergonomic elk-skin camera strap     
 www.eddycam.com        

      


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Sunday, March 8, 2026

DID YOU KNOW...


© Heinz Richter

By Heinz Richter


Leica is often criticized for being too expensive, some even dismiss Leica cameras as being nothing more than a luxury item. 

 

Of course, Leicas are not for everyone, just like Ferraris, Rolls Royces, Porsches etc. are not for everyone. They too are out of reach for many because of their cost. But most agree that such cars do offer much more than your everyday Chevy, Kia or VW. 

 

The same is the case with Leica. Their manufacturing process alone sets them apart from virtually all other camera manufacturers. The reason is that almost all other cameras are mass produced, cameras as well as lenses. Leica does not mass produce anything, instead they use a bench making process, where each individual item is made with substantially higher precision. 

 

Especially with lenses this pays off with better performance. There is no such thing as a perfect lens. Small deviations from the ideal lens will always happen, so in order to obtain a lens as good as possible, it is necessary to keep any deviations from the ideal to an absolute minimum. 

 

For that reason, Leica applies substantially tighter tolerances than their competition. This starts with the raw optical glass used for their lenses. The various types of glasses necessary to make a lens must have a certain refractive index as well as a specified amount of dispersion. 

 

Leica applies a standard of ±0.0002% for the accuracy of the refractive index.  This compares to the international standard of ±0.001% as applied by other lens manufacturers.  The accuracy of the Abbe number, the measure for dispersion, is ±0.2% for Leica compared to ±0.8% internationally. 

 

These much tighter tolerances continue during the grinding process of the individual lens elements. Leica allows minimum production tolerance of no more than ¼ lambda or ¼ of the average wavelength of light which corresponds to approximately 500 nanometer or 0.0005mm for the accuracy of the lens surface.  However, with some lens elements this accuracy is set for 0.0001mm or 0.1 Î¼m (micrometer).  In comparison, the tolerances applied by other lens manufacturers are ½ lambda or 0.001mm or 1 Î¼m .  Similar tolerances are used for the thickness of the elements and proper centering along the optical axis. 


Cementing lens elements
© Heinz Richter

These are just a few examples of the extra input that Leica lenses receive. However, this would be useless if extremely tight tolerances were not applied mechanically as well. 

 

The mechanical tolerances applied by Leica must conform to a minimum of 1/100 mm or 10 micrometers which equals less than 0.00039 inch for the accuracy of the lens mounts of both cameras and lenses, but also for the accuracy of the focusing mount of their lenses and for the rangefinder in the Leica M-type cameras.  The same tolerances used to be applied to the accuracy of the focal plane in the Leica analog cameras.  These needed to be increased substantially for the positioning of digital sensors since, unlike with film, sensors are totally flat.  Other manufacturers apply tolerances of about half of these measurements.   For the focusing mounts of all manual lenses, initial testing is done by machine. However, the threads of the focusing mechanism of these lenses are always finished by hand with hand grinding and polishing for one hour. These final test are up to an experienced individual who is trained to feel even the slightest imperfections in the smooth operation of the focusing mount.  No machine is capable of doing that. 

 

Finishing the foccusing mounts
© Heinz Richter

Adjusting the sensor on a Leica M10
© Heinz Richter


The next time anyone has a negative reaction to the cost of Leica cameras and lenses, let’s not forget that there is much more to that than a company selling luxury items. 

 

For in depth information on this go to: Making Cameras and Lenses the Leica Way



   For other articles on this blog please click on Blog Archive in the column to the right

To comment or to read comments please scroll past the ads below.

All ads present items of interest to Leica owners.

_______________________________________________________________________

EDDYCAM - the first and only ergonomic elk-skin camera strap     
 www.eddycam.com        

      


Click on image to enlarge
Please make payment via PayPal to GMP Photography

Click on image to enlarge
Please make payment via PayPal to GMP Photography

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Please make payment via PayPal to GMP Photography