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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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a film gauge used in film making, and the film standard.

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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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Large format refers to any imaging format of 9×12 cm or larger.

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The gelatin silver process is the most commonly used chemical process in black-and-white photography, and is the fundamental chemical process for modern analog color photography.

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collect, exhibit, research and maintain the photo collection at a museum

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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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the presentation of visual elements in an image, especially the placement of the subject in relation to other objects.

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a large room for the exhibition of pictures also : a collection of pictures.

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you own an image you created

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A line in a photo is a point that moves, leading towards something

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A shape describes a flat, enclosed area of space.

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An object's chromatic quality.

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A 3D object having depth

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The tactile quality of a surface

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An object’s brightness/darkness

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An object’s internal/external areas

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a distribution of equal visual weight

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Variety is about varying elements and objects in your image, to avoid making them boring.

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an orderly repetition of an object

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a scaling of objects in relation to each other

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a directed path of optical motion

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a harmonious arrangement of elements

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an accentuation of importance

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a form of symmetrical balance where elements within an image radiate outwards from a central point.

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when two halves of an image hold the same weight and give a perfect balance between two sides of your photograph.

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unequal visual weight on either side of a photo.

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placing two things together to show contrast or similarities.

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any photo containing only the hues or tones of one specific color.

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Cool colors include green, blue, and violet.

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Warm colors include red, orange, and yellow

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Neutral tones are often earth-colored tones that relate to the natural elements of an outdoor environment.

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Complementary colors are colors opposite one another on the color wheel.

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A triadic color scheme uses every fourth color, leaving three colors between each.

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When taking any image, split it into 9 segments by using 3 vertical and 3 horizontal lines -- The rule indicates that you should place key elements of your scene at one or more of these areas in a photo.

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Leading lines are lines that appear in a photograph that have been framed and positioned by the photographer to draw the viewer's eye towards a specific point of interest.

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The golden ratio is a ratio of approximately 1.618 to 1.

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Positive space is the actual subject.

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Negative space is the area surrounding the subject.

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Backlight in photography involves positioning the main light source for a photograph behind the primary subject.

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Diffused light is light that is essentially going through a filter that spreads the light out and makes it fall on your subjects evenly and without very much contrast.

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Ambient Light traditionally refers to any form of light that the photographer did not add to their image, and can include both "natural" ambient sunlight, or "artificial" ambient light such as a nearby street light, lamp, or similar.

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Chiaroscuro is used to describe bold contrast and distinct areas of light and darkness within a piece of art.

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A silhouette is defined as a view of an object or a scene consisting of the outline and a featureless interior, with the silhouetted object usually being black.

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Objective photography is an impersonal image not influenced by feelings, interpretations or prejudice. Subjective photography is the creative or artistic process.

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Constructive criticism informs the photographer how to improve.

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Using someone else's work without giving credit is considered plagiarism.

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A trademark is a word, phrase, symbol, and/or design that identifies and distinguishes the source of the goods of one party from those of others.

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Photography ethics are subjective, contextual, and fluid, meaning that every person's ethics will be different, because ethics are based on a person's life experience and values.

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Two images combined into a single frame or presented together

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A group of three pictures. The pictures should have a common theme. This could be a story, similar compositional elements, colors, similar subject matter – anything that draws the pictures together as a group.

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A pixel is the smallest item of information in an image

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The golden hour is the period of daytime shortly after sunrise or before sunset, during which daylight is redder and softer than when the Sun is higher in the sky.

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The blue hour is the period of twilight in the late dusk each evening, or the very dawn of the morning, when the sun is at a significant distance below the horizon and the residual, indirect sunlight takes on a predominantly blue hue.

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A file format is a standard way that information is encoded for storage in a computer file. File formats may be either proprietary or free and may be either unpublished or open.

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JPEG is the most common format for storing and transmitting photographic images on the World Wide Web.

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Raw files are named so because they are not yet processed and therefore are not ready to be printed or edited with a bitmap graphics editor. The RAW format is ideal if you are shooting with the intent of editing the images later.

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TIFF is a lossless raster format that stands for Tagged Image File Format. Because of its extremely high quality, the format is primarily used in photography and desktop publishing.

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PSD (Photoshop Document) is an image file format native to Adobe's popular Photoshop Application. It's an image editing friendly format that supports multiple image layers and various imaging options.

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When talking about photography the term 'shadow' is used to describe the darkest parts of an image.

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Midtones show the middle tones of an image – the colours that are in-between.

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Highlights are the brightest area in a photo in which one can still see detail.

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Sepia toning is a chemical process used in photography which changes the appearance of black-and-white prints to brown.

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Post processing is process of editing the data captured by camera while taking the photo to enhance the image.

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Auto mode is a setting on a camera where the camera chooses the ISO, shutter speed, and aperture for you.

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Program mode is a setting on a camera where the camera chooses the shutter speed and aperture but you get to choose the ISO.

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Aperture priority mode is a setting on a camera that allows you to choose the aperture and the camera chooses the ISO and shutter speed.

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Shutter priority mode is a setting on a camera that allows you to choose the shutter speed and the camera choose the ISO and the aperture.

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Manual mode is a setting on a camera that allows you to choose all of the settings - ISO, shutter speed, and aperture.

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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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ISO is a setting on a camera that determines how sensitive the sensor of the camera - how bright or dark the photo will be.

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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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In digital photographs, “noise” is the commonly-used term to describe visual distortion.

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

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The shutter speed is the length of time the camera's shutters are open, exposing the sensor to light.

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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

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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. This generally occurs more often if you're shooting on a low shutter speed or with a heavy lens, and can be avoided by using a tripod and cable release setup.

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A tripod or monopod is used to stabilize the camera and is generally used to minimize/reduce camera shake when using slow shutter speeds.

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Aperture refers to the opening of a lens's diaphragm through which light passes.

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In photography, bokeh is the aesthetic quality of the blur produced in out-of-focus parts of an image.

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Shallow depth of field is achieved by shooting photographs with a low f-number, or f-stop to let in more light. A large or deep depth of field will put a longer distance into focus. In order to achieve a large or deep depth of field, you want a smaller aperture, which means the larger F-stops.

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The lens focal length is the distance of a focus from the surface of a lens or curved mirror.

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A prime lens is a fixed focal length lens that does not allow you to zoom in or out. A telephoto lens is a long-focus lens that allows photographers to utilize a focal length that is in fact shorter than the lens' physical length.

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Long-exposure 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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Time-lapse photography is a technique in which the frequency at which film frames are captured is much more spread out than the frequency that is used to view the sequence.

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Light painting is a photographic technique where light is “painted” or “drawn” into the photograph using a hand held light source during a long exposure.

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In photography panning means swiveling a still or video camera horizontally from a fixed position.

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The term "Resolution", when used to describe a digital camera refers to the size of the digital image the camera produces, and is usually expressed in terms of "megapixels" or how many million pixels it can record in a single image. More resolution = better quality.