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On December 1st , then on December 5, 2025, I did my first photo session remote from home after my stay to hospital November 15-24. I felt confident with my physical condition and I really enjoyed these two small excursion with my circa-1959 French TLR Semflex OTO 3.5B (see below for details about the camera). Loaded with aRollei RPX 400 black-and-white film.
On December 1st, I went in the afternoon from Lyon, France, to Poleymieux in the Mont-d’Or massif where I did only 4 photos at the church and one « caborne » that not far away. The weather was fresh (5°C) and sunny. On December 5, I went to the Gallo-Roman museum in Fourvières using the public transportations. I did the rest of the roll indoor before going down the hill, in a cold rain and dark end of the afternoon. I passed by « Les Ateliers de Marinette », Saint-Georges street. They have the largest choice and the best price for films and photography chemicals. I had then a nice hot chocolate there before returning home to process my film.
Outdor, I used on the SOM Berthiot FLOR 3.5/75mm taking lens, a push-on Semflex hood and the Semflex yellow x2 filter. I protected also the viewing lens with a 42mm FOCA push-on AUV filter. Indoor, I used no filter for the taking lens. Light metering was done outdoor with my Minolta Autometer III (1983) and its 10° selective viewer privileging the shadow areas. The yellow filter absorption was compensated by metering for 250 ISO instead 400. Indoor, I metered mostly incident light with integrating opale dome.
Film side marks identification
December 6 2025
69004 Lyon
France
After completion, the film was processed in a Paterson developing tank with a spiral adapted to the 120-format film. 500 mL of Adox Adonal (Agfa Rodinal) developer were prepared at the dilution 1+25and the film processed for 9 min at 20°C.
Digitizing was made using a Sony A7 camera (ILCE-7, 24MP) held on a Minolta vertical macro stative device and adapted to a Minolta MD Macro lens 1:3.5 f=50mm. The light source was a LED panel (approx. 4x5') CineStill Cine-lite fitted with film holder "Lobster" to maintain flat the film.
The RAW files obtained were inverted within the latest version available of Adobe Lightroom Classic (version 15.0.1 of November 2025) and edited them to the final jpeg pictures without intermediate file. They are presented either as printed files with frame or the full size JPEG together with some documentary smartphone pictures.
About the camera:
This beautiful French Semflex TLR OTO 3.5 B year 1959 is equipped with a French SOM Berthiot Flor 1:3.5 f=75mm (4 elements of the Tessar type). I got the camera from a neighboring collector in Lyon, France, who is progressively reducing a very large camera collection. He provided already to me my nice FOCAsport II two years ago.
The SEM company ("Société des Etablissements Modernes de Mécanique") was founded in France by Paul Royet in 1946, in the small city of Aurec near Saint-Etienne (Loire) and about 65 km away from Lyon. The SEM camera's were known especially for the TLR’s Semflex that were a great commercial success in France until the 70's (last production 1976). The camera's are constructed around an injected aluminum alloy chassis, very resistant and rigid permitting precise optical alignments. The focusing mechanism is made of a cam system like the Rolleiflex giving an accurate and smooth focusing. SEM constructed their own shutters called « Orec » with 5 leaves capable of the 1/400s to 1s with B.
Semflex received in majority French optics Berthiot with 3 or 4 lenses (Cooke triplet and Tessar type, respectively). Some camera's were also mounted with Pierre Angénieux X1 lenses.
Semflex were trusted TLR camera's used by amateurs and for professional purposes. From 1949 to 1976, 171.000 Semflex were produced in many different types and versions. This OTO 3;5 B, type-30, (1955-199) is the top of the TLR line year 1959. I got the camera with the original SEMFLEX box and the user manual. The accessories include the specific SEM ever-ready leather bag in very good condition, the quite rare quite rare bipolar to PC port flash relay Semflex and a short (10 cm) shutter release cable.
The OTO 3.5 B is covered with a black leather and the metallic parts covered with black enamel. This model has a specific bayonet mount fro lenses accessories but still accepts the push-on normal SEM filter and shade hood.
Strangely, the SEMFLEX’s has no lens caps in a the available list of accessories. I adjusted two black caps of 35mm film canister to protect the two lenses.
The shutter (OREC 1s-1/400s + B) was functional including the slow speeds but has a propension sometimes to open slowly (closure is normal) due likely to a sticky lubricant somewhere. I gave the camera to the same local expert who already maintained my other Semflex 3.5 Standard. The complete cleaning and lubricating was done and the shutter returned in its original specs.
The OTO (or OTOMATIC) series has a coupled film advance to the shutter cocking. The film advance is of the « double-stroke » type (like early Leica M3) with automatic frame counter. I tested successfully the flash synchronization with the GODOX Lux Master electronic flash and its synchro cable connected to the SEM bipolar relay.
Reference : SEM et les SEMFLEX, Patrice-Hervé Pont, FOTOSAGA, 1995.
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This photo was captured at the 2025 edition of the Great International Developer Summit, April 21–24, Bangalore, India. #gids
With 85,000 attendees benefiting over 18 game-changing editions, Great International Developer Summit (GIDS) is the gold standard for Asia's software developer ecosystem to gain exposure to and evaluate new projects, tools, services, platforms, languages, and standards.
The 2025 edition carried the theme "Empowering the Tech Vanguard" and featured key tracks including Software Architecture, Front-end, Back-end, OpsTech, DeepTech, DataTech, and TechLead. Across 150+ sessions and keynotes, the program delivered high-impact insights designed to help developers assess and adopt transformative technologies.
Visit the official summit home at www.developersummit.com.
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This photo was captured at the 2025 edition of the Great International Developer Summit, April 21–24, Bangalore, India. #gids
With 85,000 attendees benefiting over 18 game-changing editions, Great International Developer Summit (GIDS) is the gold standard for Asia's software developer ecosystem to gain exposure to and evaluate new projects, tools, services, platforms, languages, and standards.
The 2025 edition carried the theme "Empowering the Tech Vanguard" and featured key tracks including Software Architecture, Front-end, Back-end, OpsTech, DeepTech, DataTech, and TechLead. Across 150+ sessions and keynotes, the program delivered high-impact insights designed to help developers assess and adopt transformative technologies.
Visit the official summit home at www.developersummit.com.
This photo was captured at the 2019 edition of Great International Developer Summit, April 22-26, Bangalore, India. #gids19
With 56,000 ATTENDEES benefiting over 12 game changing editions, Great International Developer Summit (GIDS) is the gold standard for Asia's software craftsman ecosystem for gaining exposure to and evaluating new projects, tools, services, platforms, languages, software and standards.
The 2019 edition of GIDS featured a convergence of eight broad tracks covering data, cloud, devops, software architecture, Java, dynamic languages, mobile development and modern web. With 200+ focused sessions, keynotes and full-day workshops, the program was packed with all that software practitioners need to determine which technologies will make the biggest impact this year.
Visit the official summit home at www.developersummit.com.
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Photograph from Mobile Developer Summit 2011 held in Bangalore, India, 2-3 November 2011, produced by Saltmarch Media. Photograph ©Copyright Saltmarch Media. Non-commercial use permitted with attribution and linkback to this page on Saltmarch's Flickr photostream. All other rights reserved.