Canon IVSB Rangefinder – Collector Overview
General Overview
Introduced in 1952, the Canon IVSB represented a further refinement of Canon’s screw-mount rangefinder lineup, following cameras such as the Canon III and IV. Equipped with an improved shutter speed dial, flash synchronization, and other user-friendly updates, the IVSB became a highly popular choice for photographers who wanted a robust, feature-packed Japanese alternative to Leica rangefinders. It used the Leica Thread Mount (LTM), allowing the use of both Canon’s own Serenar lenses and compatible third-party optics.
Historical Significance
- Feature-Rich Refinement: The IVSB included separate high- and low-speed shutter dials, streamlined flash sync connections, and a bright rangefinder-viewfinder setup.
- Japanese Leica Competitor: Canon’s IV-series cameras solidified the brand’s reputation for building high-quality cameras at competitive prices, boosting exports.
- Lens Mount Versatility: Retained the LTM (39mm) mount to accommodate a variety of lenses, both Canon-branded and third-party.
- Foundation for Later Enhancements: Lessons from the IVSB were applied to subsequent rangefinder designs, including Canon’s V and 7-series.
Collectibility and Value
Among early Canon rangefinders, the IVSB remains sought after due to its blend of functionality (flash sync, extended shutter speed range) and classic style. Condition is paramount, especially regarding the shutter curtains and the rangefinder mechanism. A well-maintained IVSB with a period-correct Canon Serenar or 50mm f/1.8 lens can be found in the €200–€400 range on European auction sites, although pristine examples or rare lens combos can fetch higher.
Canon IVSB Specifications
| Name | Canon IVSB |
|---|---|
| Manufacturer | Canon (branded as Seiki Kogaku on early models) |
| Made in | Japan |
| Production Date | 1952 – mid-1950s |
| Type | 35mm Rangefinder Camera |
| Series | Canon IV Series |
| Picture Size | 24 × 36 mm (standard 35mm format) |
| Normal Lens | Canon/Serenar 50mm f/1.8 or f/2.0 (LTM) |
| Lens Mount | Leica Thread Mount (LTM / M39) |
| Focus | Manual, coupled rangefinder |
| Shutter | Cloth focal-plane; high/low speed dials up to 1/1000 + B |
| Flash Sync | PC socket & flash sync selector, typically at 1/25 |
| Dimensions & Weight | Approx. 136 × 74 × 37 mm; ~600 g (body only) |
| Original Price | ~$150 (USD) in early 1950s |
| Indexed Price (Approx.) | ~€1,400 (inflation-adjusted + conversion) |
| Avg eBay Value | ~€200–€400 (body only, good condition) |
Collector Notes
- Shutter Curtains & Speeds: High- and low-speed dials can suffer from dried lubricants. A professional CLA may be needed.
- Rangefinder Alignment: Misaligned or dim rangefinders can affect focusing accuracy. Check or confirm recent servicing.
- Lens Quality: Canon/Serenar prime lenses can develop haze or fungus over time. Inspect thoroughly.
- Flash Sync Mechanism: Verify that the PC socket and sync selector still function properly, if you plan to use a strobe.
The Canon IVSB marks an important step in Canon’s history of evolving the screw-mount rangefinder. Its enhanced feature set and classic styling appeal to vintage camera collectors and photographers alike, bridging the gap between the earlier III series and the advanced V and 7-series cameras that followed.