History: This is a very rare example of the french lens making legend Berthiot Paris. The Stellor Ia series offered a 4 element layout that resembles the Zeiss Unar layout of that time. It is said that it offers a fine defined sharpness while beeing also slightly softer then the Tessar layout when shot wide open. That is also true for the Unar series and offers an interesting angle for portraiture work!

Condition: The housing is in a nice condition, there is almost no wear to the housing and the golden laquere is mostly intact. The glass is in a quite good  condition, there are only minimal clening marks  and dust specs here and there, but there is no haze, no fungus and no chips present. The aperture runs smooth from F3.5 to F28.

The lens comes complete with a flange.


The lens has a focal lenght of 205mm at a speed of F3.5. It will cover 4x5 and up to 5x7 formats.




height: 7cm
width: 7cm
weight: 800gr

Insured and tracked shipping cost:

Germany - 10 eur
EU* - 30 eur
Worldwide - 80 eur

*(the site offers only 2 shipping variations, DE and worldwide. buyers from EU please either contact me beforehand for a reduced EU cost, or after buying so i can send a refund over the difference)

Importent Note: This item comes from my private collection and is around 100 years old (antique). I try my best to describe all the faults and major damage which are relevant for the function of this item. But the actuall item can show signs of wear and also some cosmetic blemishes/damage which is not described in the auction text! When buying this item the buyer agrees to this terms.