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Glossary Of Photography Terms [5]

U Underexposed In photography, exposure relates to the amount of light that was allowed to affect the image, either through the viewfinder of the camera, or in the darkroom during film development. An underexposed image will have less light than an average image (generally considered too too, though some artists deliberately underexpose their images). Underexposure tends to make an image greyer, obscuring details in areas that were already quite dark.
UV Ultraviolet light. UV rays are beyond the visible spectrum of humans. UV radiation comes from a variety of sources, including the sun, lamps, LEDs, lasers, etc.
UV DTF UV DTF stands for UV Direct-to-Film, which is a printing method used for transferring designs onto various surfaces, particularly textiles. It involves printing the design onto a special film using UV-curable inks, which are then transferred onto the desired material using heat and pressure. This technique offers vibrant and durable prints with excellent color accuracy and detail. UV DTF is commonly used in the garment and textile industry for creating custom prints on fabrics.
UV Filter A UV (Ultraviolet) filter is a transparent optical filter that is attached to the front of a camera lens to reduce the effects of ultraviolet light and protect the lens from dust, moisture, and scratches. UV filters are made of clear glass or optical resin that absorbs or blocks ultraviolet rays, which can cause haze, glare, and color shifts in photographs, especially at high altitudes or in bright sunlight. While modern digital cameras are equipped with UV-blocking sensors, UV filters are still commonly used as a protective measure to safeguard expensive lenses from damage and maintain optical clarity. UV filters also serve as a sacrificial layer that can be easily replaced if scratched or damaged, extending the lifespan of the lens.
UV Non-Glare Protective Plexiglass Acrylic where one or both surfaces have been treated chemically or mechanically to slightly roughen the surface, causing reflected incident light to be dispersed in all directions, minimizing glare. In addition, the glass is treated to repel UV rays, protecting the artwork from fading, yellowing or peeling. UV plexiglass is considered conservation or archival quality. Because the glass surface is not smooth, art images behind the glass tend to be softened. The softness depends on how far the art is from the glass. No more than two or three mats are recommended to be used with non-glare glass. If clarity is desired, objects in deep frames (shadow boxes) should not be displayed with non-glare glass. When you order your framed print, you can choose the best plexiglass for the display. Or order Plexiglass Mounting Boards