Ernst Haas, a pioneer of color photography and a key figure in photojournalism, used a range of camera gear throughout his career.
His equipment evolved over time, but here are the main tools he was known to use:
Early Career (Black and White Work):
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Leica Rangefinder Cameras: 
 In the 1940s and 1950s, Haas primarily used Leica cameras, notably the Leica III series and later the Leica M3, with screw-mount or M-mount lenses.
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These cameras were small, quiet, and ideal for his early black-and-white reportage. 
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Common lenses included the 50mm Summicron and 35mm wide-angles. 
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| Leica M3 | 
Color Photography Era (1950s onward):
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Leica M3 and M4: 
 He continued using Leica rangefinders as he transitioned to color photography.
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His Leica M3 was especially important in his early color work for Life magazine and later personal projects. 
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| Leica M4 | 
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SLRs – Nikon and Canon (Later Years): 
 By the 1960s and 70s, Haas also used SLRs (especially for zoom and telephoto flexibility):
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Nikon F series 
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Possibly Canon F-1 in his later work 
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These gave him access to longer lenses and macro options. 
Film Stock:
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Haas was renowned for his use of Kodachrome film, particularly Kodachrome 25 and 64. 
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This slide film gave his work its signature saturated colors, fine grain, and luminous quality. 
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Kodachrome was integral to his artistic vision. 
Lenses:
Haas used a variety of lenses, but his style favored:
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Wide-angle and normal primes (e.g., 35mm, 50mm) for street and dynamic compositions. 
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Telephoto lenses (e.g., 85mm, 135mm) for isolating subjects and compressing space. 
Summary:
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Main cameras: Leica M3, M4, possibly Nikon F series 
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Main film: Kodachrome 25 & 64 
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Lenses: 35mm, 50mm, and some telephotos 
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Approach: Minimal gear, intuitive shooting, deeply poetic use of color and light 
Let me know if you'd like a suggested setup to emulate Haas's style with modern digital gear.
