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A category of artistic composition, as in music or literature, characterized by similarities in form, style, or subject matter.

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35 mm film is a film gauge used in filmmaking, and the film standard. In motion pictures that record on film, 35 mm is the most commonly used gauge.

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A twin-lens reflex camera is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking lens", while the other is used for the viewfinder system, which is usually viewed from above at waist level.

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A camera obscura is a darkened room with a small hole or lens at one side through which an image is projected onto a wall or table opposite the hole.

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The gelatin silver print or gelatin developing out paper (DOP) is a monochrome imaging process based on the light sensitivity of silver halides. They have been made for both contact printing and enlarging purposes by modifying the paper's light sensitivity.

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Intended to communicate something that is not directly expressed.

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A public display of works of art or items of interest, held in an art gallery or museum or at a trade fair.

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A room or building for the display or sale of works of art.

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A building in which objects of historical, scientific, artistic, or cultural interest are stored and exhibited.

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A photographic studio is often a business owned and represented by one or more photographers, possibly accompanied by assistants and pupils, who create and sell their own and sometimes others’ photographs

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Line is a point that continues, that leads the viewers eyes into certain parts of the photo.

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An element of art by which positive and negative areas are defined or a sense of depth are achieved in a work of art.

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An element of art that is two-dimensional, flat, or limited to height and width.

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An element of art that is three-dimensional and encloses volume, includes height, width and depth.

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An element of art that is made up of three properties: hue, value, and intensity.

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Value in photography describes the range of light in an image.

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An element of art that refers to the way things feel, or look as if they might feel if touched.

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The distribution of the visual weight of objects, colors, texture, and space

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The part of the design that catches the viewer’s attention. Usually the artist will make one area stand out by contrasting it with other areas. The area could be different in size, color, texture, shape, etc.

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The path the viewer’s eye takes through the work of art, often to focal
areas

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The repeating of an object or symbol all over the work of art.

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The feeling of harmony between all parts of the work of art, which creates a sense of completeness.

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The use of several elements of design to hold the viewer’s attention and to guide the viewer’s eye through and around the work of art.

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The feeling of unity created when all parts (sizes, amounts, or number) relate well with each other

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Symmetry around a central axis, as in a starfish or a tulip flower.

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The quality of being made up of exactly similar parts facing each other or around an axis.

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Lack of equality or equivalence between parts or aspects of something; lack of symmetry.

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The fact of two things being seen or placed close together with contrasting effect.

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Existing in thought or as an idea but not having a physical or concrete existence.

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An increase or decrease in the magnitude of a property

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Cool colors are typified by blue, green, and light purple. They can calm and soothe

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They evoke warm feelings in people. Yellow, red, orange and different shades of these colors are warm colors.

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Neutral colors are muted shades that appear to lack color but often have underlying hues that change with different lighting.

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Complementary colors are pairs of colors which, when combined or mixed, cancel each other out by producing a grayscale color like white or black.

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Monochromatic colors are all the colors of a single hue.

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Radient specifies a range of position-dependent colors, usually used to fill a region.

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Helping to improve; promoting further development or advancement (opposed to destructive

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The practice of taking someone else's work or ideas and passing them off as one's own.

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Relating to moral principles or the branch of knowledge dealing with these.

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Based on or influenced by personal feelings, tastes, or opinions

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Copyrights primarily protect the rights of people who create literary, dramatic, musical, artistic, and certain other intellectual works

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The rule of thirds is a "rule of thumb" for composing visual images such as designs, films, paintings, and photographs

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Leading lines are a compositional technique where human-made or natural lines lead the viewer's eyes through a photograph to the subject or the heart of the image

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The golden ratio is a guide to where to place a subject (a tree, person, building, etc.) or element in a photo (like the horizon) where it will be most pleasing to the eye

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Negative space, in art, is the empty space around and between the subject of an image

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Positive space refers to the subject or areas of interest in an artwork, such as a person's face or figure in a portrait, the objects in a still life painting, or the trees in a landscape painting

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Backlighting is the process of illuminating the subject from the back

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In optics, a diffuser is any material that diffuses or scatters light in some manner to transmit soft light.

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Ambient lighting is essentially indirect lighting. A soft light that is reflected off the ceiling. It reduces the shadows on people's faces and fills the room with equal brightness, opening up the architecture and drawing people in

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Chiaroscuro, in art, is the use of strong contrasts between light and dark, usually bold contrasts affecting a whole composition

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A silhouette is the image of a person, animal, object or scene represented as a solid shape of a single colour, usually black, with its edges matching the outline of the subject

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A diptych is any object with two flat plates which form a pair, often attached by hinge

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A triptych is a work of art that is divided into three sections, or three carved panels that are hinged together and can be folded shut or displayed open

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Orthographic projection is a means of representing three-dimensional objects in two dimensions

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Barrel lens distortion occurs because the magnification of the image decreases the farther the object is from the optical axis of the lens

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Pincushion distortion is the exact opposite of barrel distortion – straight lines are curved outwards from the center

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ISO is your camera's sensitivity to light as it pertains to either film or a digital sensor

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The ASA (American Standards Association) scale is an arbitrary rating of film speed; that is, the sensitivity of the film to light

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An image sensor is a sensor that detects and conveys information used to make an image

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Film grain or granularity is the random optical texture of processed photographic film due to the presence of small particles of a metallic silver, or dye clouds, developed from silver halide that have received enough photons

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Digital noise is random variation of brightness or color information in images, and is usually an aspect of electronic noise

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A camera setting corresponding to a particular f-number

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A space through which light passes in an optical or photographic instrument, especially the variable opening by which light enters a camera

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The visual quality of the out-of-focus areas of a photographic image, especially as rendered by a particular lens

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The distance between the nearest and the furthest objects that give an image judged to be in focus in a camera

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The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power

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The programmed auto mode of your camera automatically adjusts shutter speed and aperture, based on a built-in program

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As the name suggests, “Manual” mode stands for a full manual control of Aperture and Shutter Speed. In this mode, you can manually set both the aperture and the shutter speed to any value you want – the camera lets you fully take over the exposure controls

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Aperture priority is a mode on some cameras that allows the user to set a specific aperture value while the camera selects a shutter speed to match it that will result in proper exposure based on the lighting conditions as measured by the camera's light meter

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Shutter priority refers to a setting on cameras that allows the user to choose a specific shutter speed while the camera adjusts the aperture to ensure correct exposure

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Program mode is marked by 'P' on your camera's mode dial and is one of the Creative Zone modes, though one with the least control over your exposure settings. In program mode the camera selects and sets both the shutter speed and the aperture

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The time for which a shutter is open at a given setting

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The Bulb setting on camera shutters is a momentary-action mode that holds shutters open for as long as a photographer depresses the shutter-release button

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Motion blur is the apparent streaking of moving objects in a photograph or a sequence of frames, such as a film or animation

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Both a tripod and monopod are accessories designed to support a camera — where the two differ are the legs. A tripod has three legs (that's the “tri”). A monopod is a camera support that has one leg (that's the “mono”)

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Camera shake is a term used to define the act of accidentally shaking a camera during shooting due to unsteady hands, which results in blurry images

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Denoting the photographic technique of taking a sequence of frames at set intervals to record changes that take place slowly over time. When the frames are shown at normal speed, or in quick succession, the action seems much faster.

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Light painting, painting with light, light drawing, or light art performance photography are terms that describe photographic techniques of moving a light source while taking a long-exposure photograph

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In cinematography and photography panning means swivelling a still or video camera horizontally from a fixed position. This motion is similar to the motion of a person when they turn their head on their neck from left to right

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Burst mode is a generic electronics term referring to any situation in which a device is transmitting data repeatedly without going through all the steps required to transmit each piece of data in a separate transaction

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Spot metering allows the camera to measure the light reflected from the person's face and expose properly for that, instead of adjusting exposure for the much brighter light around the hairline

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Long-exposure, time-exposure, or slow-shutter photography involves using a long-duration shutter speed to sharply capture the stationary elements of images while blurring, smearing, or obscuring the moving elements

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Partial metering covers only the centre 6.2% of the frame in the viewfinder, thus providing precise metering only for the subject. When the background is brighter than the subject due to reasons like back lighting, this metering mode is particularly useful. It is useful for back-lit shots or tiny subjects

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Centre-weighted Average metering is like using Evaluative metering with a centre AF point. It places greater emphasis on the centre area while also taking meter reading across the entire frame.

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Evaluative metering is the default metering mode on most cameras. It ensures that the camera will automatically adjust to the right exposure setting even when the ambient lighting shows greater contrast.

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By definition 18% gray is the “mid-point between black and white on a logarithmic or exponential curve.” Think of it this way; it is simply halfway between black and white

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a dark area or shape produced by a body coming between rays of light and a surface.

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Midtones are the areas of an image that are neither bright nor dark

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Highlights are the lightest elements in an image

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A vignette is a darker border - sometimes as a blur or a shadow - at the periphery of photos.

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Technically speaking, sepia toning is a chemical process that converts the metallic silver in the emulsion of a photographic print into a silver sulfide compound.

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In geometrical optics, a focus, also called an image point, is a point where light rays originating from a point on the object converg

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In photography, bracketing is the general technique of taking several shots of the same subject using different camera settings

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The exposure meter indicates the level of light reaching the sensor.

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Exposure compensation is a technique for adjusting the exposure indicated by a photographic exposure meter, in consideration of factors that may cause the indicated exposure to result in a less-than-optimal image

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Gray or white balance cards are commonly used by photographers to color-correct their photos, especially if they're working in yellow lights. The market is saturated with color balance cards, making it challenging to find the right ones.

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Workspace Switcher displays a visual representation of your workspaces

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The toolbar, also called a bar or standard toolbar is a graphical control element on which on-screen icons can be used.

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the range of colors used by a particular artist or in a particular picture

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A horizontal bar, typically located at the top of the screen below the title bar, containing drop-down menus.