Focusing screen

A focusing screen is a flat translucent material, either a ground glass or fresnel lens, found in a system camera that allows the user of the camera to preview the framed image in a viewfinder. Often, focusing screens are available in variants with different etched markings for various purposes. For instance, "overall matte" focusing screens with no etchings are a popular choice for astrophotography and other low-light situations.

单词	Focusing screen
释义	Focusing screen 英语百科 Focusing screen A focusing screen is a flat translucent material, either a ground glass or fresnel lens, found in a system camera that allows the user of the camera to preview the framed image in a viewfinder. Often, focusing screens are available in variants with different etched markings for various purposes. For instance, "overall matte" focusing screens with no etchings are a popular choice for astrophotography and other low-light situations.
随便看	redwood viscosity redwork Redworm Red Worm red worm,redworm red worms redworms redws Redy re dye redye red yeast Red yeast rice Red Yeast Rice P.E redyeing redyeing process red yellow podzolic soil redymite redyn redyness REDZ Redzepi red zinc chromate primer Red zinc ore red zine ove