Leica M3
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Primary Identity: The Leica M3 (1954–1966) is the landmark 35mm mechanical rangefinder camera manufactured by Ernst Leitz GmbH in Wetzlar that inaugurated the Leica M system Core Thesis: By uniting the rangefinder and bright-line viewfinder into a single 0.91x window, replacing screw-mount threading with the quick-change M bayonet mount, and adding a rapid film-advance lever, the M3 set the ergonomic and optical benchmark for 20th-century photojournalism 0.91x Optical Finder & Framelines: The M3's 0.91x magnification viewfinder automatically projects parallax-corrected framelines for 50 mm, 90 mm, and 135 mm lenses, delivering an effective rangefinder base length unmatched by later M bodies for 50 mm focusing Double-Stroke to Single-Stroke Evolution: Early M3 bodies (1954–1958) required two strokes of the film-advance lever ("Double Stroke"), before Ernst Leitz transitioned production in 1958 to a Single Stroke advance mechanism
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Verified Entity DossierRanked #1 in Top 10 Cameras That Changed Photography Forever (From Brownie to iPhone)
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Structured Facts & Specifications
Verified highlightsTotal Production
Over 220,000 units built between 1954 and 1966, including 1,620 black-paint examples
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Format Lens Mount
35mm film rangefinder camera; introduced the Leica M bayonet mount
usedlens.co.ukOfficial usedlens.co.uk ↗
Manufacturer Production Span
Ernst Leitz GmbH, Wetzlar, Germany (later Leica Camera AG); produced from 1954 to 1966
classic.leica-camera.comOfficial classic.leica-camera.com ↗
Viewfinder Shutter
Combined rangefinder/viewfinder with 0.91x magnification (framelines for 50, 90, and 135 mm) and mechanical cloth focal-plane shutter (1 s to 1/1000 s), no built-in light meter
usedlens.co.ukOfficial usedlens.co.uk ↗
Official Archival Url
classic.leica-camera.comOfficial classic.leica-camera.com ↗
Ontology Metadata
nodeType: product
classic.leica-camera.comOfficial classic.leica-camera.com ↗
Entity Id Slug
leica-m3 / leica-m3-rangefinder-camera-1954
classic.leica-camera.comOfficial classic.leica-camera.com ↗
Batch Source
Top10Grid v4 Verified Dossier (BATCH25)
Format & Lens Mount
35mm film rangefinder camera; introduced the Leica M bayonet mount
Primary Reference Url
Viewfinder & Shutter
Combined rangefinder/viewfinder with 0.91x magnification (framelines for 50, 90, and 135 mm) and mechanical cloth focal-plane shutter (1 s to 1/1000 s), no built-in light meter
Manufacturer & Production Span
Ernst Leitz GmbH, Wetzlar, Germany (later Leica Camera AG); produced from 1954 to 1966
Appears in 1 lists
Frequently Ranked Alongside Leica M3
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