U
UHD (Ultra High Definition): A resolution standard that provides greater detail than standard HD, typically used in large displays.
Ultra-Wide Angle Lens: A lens with an extremely short focal length that captures a very wide field of view.
Umbrella Light: A type of diffused lighting used to soften shadows and produce even lighting.
Uncompressed Format: An image format that retains all data without loss, such as TIFF or RAW.
Underexposure: When too little light hits the camera sensor, resulting in dark images.
Underwater Housing: A waterproof casing for cameras used in underwater photography.
Unsharp Mask: A photo editing technique used to enhance sharpness by increasing contrast along the edges of an image.
Upper Light: A lighting position where the light source is placed above the subject.
Upright Tool: A feature in post-processing software that corrects the perspective of an image.
UV Filter: A lens filter that blocks ultraviolet light, often used to protect the lens surface.
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V
Vanishing Point: The point in a perspective drawing or photograph where parallel lines seem to converge.
Vector Image: An image made up of paths, rather than pixels, allowing it to be scaled without loss of quality.
Vertical Composition: A photo orientation where the image is taller than it is wide, often used for portraits.
Vibration Reduction (VR): A feature in lenses or cameras that minimizes the effect of camera shake on image quality.
Video Frame Rate: The number of frames per second (fps) in video recording, affecting the smoothness of motion.
View Camera: A large-format camera where the lens and film planes can be adjusted for perspective and focus control.
Viewfinder: The part of the camera through which the photographer looks to frame and focus the shot.
Vignette: A reduction in brightness or saturation at the edges of an image.
Visual Weight: The perceived importance or emphasis of a subject in a photograph, often influenced by size, color, or brightness.
VR (Vibration Reduction): A technology used in lenses to reduce camera shake and provide sharper images.
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W
Warp Tool: A feature in image editing software that allows you to distort or reshape an image.
Watermark: A logo or text added to an image to protect ownership or copyright.
White Balance: A camera setting that adjusts the color balance of an image to compensate for different lighting conditions.
White Point: The color temperature of the brightest point in an image, used to set the white balance.
Wide Aperture: A setting where the aperture is wide open (e.g., f/1.4), allowing more light into the lens and creating a shallow depth of field.
Wide-Angle Lens: A lens with a short focal length that captures a wide field of view.
Window Light: Natural light that comes through a window, often used for soft, diffused lighting in portraits.
Wireless Trigger: A device that wirelessly triggers the camera’s shutter or an off-camera flash.
Workflow: The process or sequence of steps taken in capturing, editing, and finalizing an image.
WYSIWYG (What You See Is What You Get): A display mode where the image on the screen closely resembles the final printed or saved version.
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