How to Maintain Projection Lenses?Ⅰ. The projection lenses need cleaning and maintenanceSince the projection lens is directly exposed to the air, dust will inevitably fall on the surface of the lens. If the dust on the lens is not re...view
Why Use an Anamorphic Lens? How to Use It?If you like to shoot videos, you must have heard of anamorphic lenses, and even considered buying anamorphic lenses. What exactly is an anamorphic lens? Is the video shot with it really similar to the...view
What is the Difference Between Spherical and Aspheric Lenses?1. The difference between spherical and aspheric lenses: surface curvatureThe difference between spherical and aspheric lenses: a spherical lens refers to a constant curvature from the center to the e...view
Tips on Selecting The Bandpass Filter1. What is Bandpass Filter?Bandpass Filter is optical filter that passes one or more specified wavelength bands while blocking other wavelength bands. Bandpass Filter refers to wavelength ranges and i...view
Basic Knowledge About SWIR Lensens1. SWIR Lenses is also an optical lensSWIR Lenses refers to the wavelength range between 900nm and 2500nm, which is invisible to the naked eye.Light is an electromagnetic wave. SWIR lenses is located...view