Filter rings are generally made from either aluminum or brass. Lens barrels, particularly the threads to which filters attach, are usually made from aluminum.
filter rings
filter thread - a screw-thread inside the front of a lens to allow filters to be attached.
film advance - Mechanism for moving the film from one spool to another, usually one frame at a time.
The first thing you notice when you take Tiffen Digital HT filters out of their boxes and slide them out of their lined nylon pouch cases is that the all have titanium-finish filter rings that are beautifully made and feature a milled front edge for ...
Indie conversion lens maker Raynox offers several choices that are designed to be used on multiple lenses or cameras. The DCR-150 Macro-Scan Conversion Lens provides 1.5X magnification and will snap onto DSLRs or EVF cameras with filter rings of 52mm ...
 See also: Density, Digital, Time, Color, Photographer
  
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