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Canon IV Sb2 |
 Version française |
Manufactured or assembled in Japan from 1954 to 1956.
Index of rarity in France: Rare (among non-specialized garage sales)
Inventory number: 10531
See the complete technical specifications
Chronology of cameras Canon
The first cameras marketed by Canon were heavily inspired by Leica. Their silhouette remained largely the same until the mid-1950s, with the arrival of the VT. These are 35mm cameras with interchangeable lenses. Some models have a non-standard mount for which only one lens was available. Most of these models are rangefinders. Slow speeds are adjusted using an independent dial located on the front face.
| Name in Europe |
Year | Name for Japan | Name in America |
Shutter | ||
| - | 1936 | Hansa Canon | - | 1/20 to 1/500, B |
approx. 1 100 copies | |
| - | 1939 | J | - | approx. 200 copies No rangefinder |
||
| - | 1939 | NS | - | approx. 100 copies | ||
| - | 1939 | S | - | 1 to 1/500, B |
approx. 1 600 copies | |
| - | 1939 | JS | - | Less than 50 copies No rangefinder |
||
| J II | 1946 | J II | J II | 1/20 to 1/500. B |
approx. 500 copies No rangefinder |
|
| S | 1946 | S I | S | 1 to 1/500, B |
97 copies | |
| S II |  |
1946 | S II | S II | 7 550 copies | |
| II B |  |
1949 | II B | II B | 14 400 copies Adding a magnifying glass to the rangefinder. |
|
| II C | 1950 | II C | II C | 1 to 1/500, B. T |
||
| III |  |
1951 | III | III | 1 to 1/1000, B, T |
10 175 copies Replacement of 1/20 with 1/25 |
| IV | 1951 | IV | IV | |||
| III A |  |
1951 | III A | III A | 9 025 copies Film reminder on the winding knob. |
|
| IV S |  |
1952 | IV F | IV S | approx. 2 000 copies M sync |
|
| II A | 1952 | - | II A | 1/25 to 1/1000, B | ||
| II D |  |
1952 | II D | II D | 1 to 1/500, B, T |
21 725 ex No sync. No reminder |
| II D' |  |
1952 | II D' | II D' | approx. 2 400 ex No sync, but a reminder |
|
| IV Sb |  |
1952 | IV Sb | IB Sb | 1 to 1/1000, B, T | 34 975 copies X Sync |
| II AF | 1953 | II AF | II AF | 1/25 to 1/500, B |
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| II AX | 1953 | II AX | II AX | |||
| II F |  |
1953 | - | II F | 1 to 1/500, B, T | 11 900 copies Multi-frame viewfinder |
| II S | 1954 | - | II S | |||
| IV Sb2 |  |
1954 | IV Sb2 | IV Sb2 | 16 800 ex X fast Sync |
|
| II S2 | 1955 | II S2 | II S2 | |||
| - |  |
1955 | II D2 | II D2 | Replacement of 1/25 with 1/30 | |
| II F2 | 1955 | - | II F2 | |||
Starting from 1952, some models were synchronized for magnesium flash, and a few years later for electronic flash. The synchronization device is the subject of patent No. US2643597 filed in 1950 (it was filed in Japan in 1948) and the inventor is Hiroshi Suzukawa. The uniqueness lies in the synchronization being done through a rail fixed on the side of the camera.
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The Canon IV Sb2 was produced from July 1954 to July 1956 (serial numbers: 122,490 to 229,000). It is also known as the IV S3.
It's the first Canon model to have a fast X-sync. In fact, there are two "X" positions on this model. A new "fast" X position at 1/45 s, located on the fast shutter speed dial on the top plate, between the slow speed access speeds 1/30-1 and 1/60 s. The second X position is located on the slow shutter speed dial, between 1/15 and 1/30, and is actually a slow speed, similar to an M (or F) sync. In 1954, most photographers owned a magnesium flash bulb, incompatible with fast sync speed.
Compared to the IVSB, there's a new fast shutter speed dial with a central index indicating the chosen speed and a new viewfinder and focusing magnifier. The 1/25 is replaced by 1/30s, for an arithmetic progression of speeds.
The film reminder window is incorporated into the film advance knob. A quick film advance, by trigger on the bottom of the camera, can be mounted.
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