Brass lenses
are used on old-time view cameras.
Brass lenses were originally used on early large-format-view cameras. Though the glass optics lack the multi-coatings that help make a lens consistently sharp and resistant to flaring (internal reflection), they can still be used to produce acceptable results. Many large-format photographers actually seek out these lenses for the soft edges they provide in portraiture and the vintage look they give to landscape shots. Old brass lenses can be had cheaply on online auction sites or at vintage photography shops specializing in large-format supplies.
Instructions
1. Loosen the small screws that secure the mounting flange to the lens board at the front of your view camera. The flange is a rectangular metal (usually also brass) sheet that the lens is screwed into.
2. Remove the flange and wipe the threads with a soft cloth dampened with solvent. This removes any oil or residue stuck between the threads. Also ensure that the threads at the end of the brass lens barrel are free of oil or dirt.
3. Screw the brass lens into the flange threads using clockwise turns. Continue turning until the lens is mounted firmly on the flange.
4. Replace the flange on the front of your camera's lens board. Insert the screws and tighten them using your slotted screwdriver.
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