Presentation on theme: "Camera Body Information from “Practical Photography”, March 2001, p.38."— Presentation transcript:
Camera Body Information from “Practical Photography”, March 2001, p.38
Requirement on the Materials Opaque –don’t want your film to record undesirable light Strength –to support the mechanism and lens Durability – won’t fracture easily, won’t deform easily, won’t scratch easily, won’t corrode easily… Weight – light but not too light Cost – you know the answer, or don’t you? Dimensional stability – the alignment and spacing of components must be kept at close tolerance Processability – hundreds of operations are required for making the camera body
1839 The Daguerreotype Camera The first commercial successful camera Wooden box Brass lens barrel and lens mount No shutter Focus with ground glass
1895 The Sanderson Wood and rubberized cloth Flexible bellow enables perspective control Can be folded into smaller dimension for outdoor use
1900 The Brownie Made with jute board Small and light even for children Can be made with very low cost (25p at that time) The first to use 120 roll film
1925 The Leica I The first 35mm camera Hand made with brass with chromium plating and paint Why use brass? Do you know the shutter material?
1959 The Nikon F Aluminium die-cast internal structure with brass top and bottom plates Titanium shutter See this page as well
1985 The Minolta 7000 First AF camera Al die cast internal stucture, with glass fiber reinforced polycarbonate external structure How is GFRP compared with brass or zinc die- cast?
State of the Art The internal structure is still mainly Al die-cast High-end product: Ti- and Mg-alloy shell prevails Consumer grade: polymeric materials are used widely