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In its simplest form, a camera obscura is a dark room with a small hole in one wall.

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The standard photographic film format for analog single lens reflex (SLR) still cameras and motion picture cameras.

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A twin-lens reflex camera is a type of camera with two objective lenses of the same focal length.

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Most twentieth-century black-and-white photographs are gelatin silver prints. In which the image consists of silver metal particles suspended in a gelatin layer.

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Genre is a category of artistic composition, as in music or literature, characterized by similarities in form, and style.

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As a Photography Curator, you're charged with running the room, wing, art gallery, or museum dedicated to Photographers and their work.

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Photography Exhibition refers to an event wherever the creator, painters, photographers show their artistic work in the hope of attracting the art lovers.

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A large room for the exhibition of pictures.

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A building, place, or institution devoted to the acquisition, conservation, study, exhibition, and educational interpretation of objects having scientific, historical, or artistic value.

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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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A line is a one-dimensional figure, which has length but no width.

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A continuous area or expanse which is free, available, or unoccupied.

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The external form, contours, or outline of someone or something. A geometric figure such as a square, triangle, or rectangle.

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The visible shape or configuration of something. Form refers to when shape takes on three dimensions.

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A component of light that is separated when it is reflected off of an object.

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Value defines how light or dark a given color or hue can be.

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Texture is the visual depiction of variations in the color, shape, and depth of an object's surface.

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A condition in which different elements are equal or in the correct proportions.

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An arrangement of lines or shapes, especially a design in which the same shape is repeated at regular intervals over a surface.

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The quality or state of being different or diverse; the absence of uniformity, sameness, or monotony.

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Adjust or regulate (something) so that it has a particular or suitable relationship to something else.

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Rhythm moves the eye in one or a series of directions.

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The visual relationship between elements in a photograph.

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Special importance, value, or prominence given to something.

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

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The absence of symmetry about an axis.

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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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The phrase cool color is used to describe any color that is calm or soothing in nature.

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The phrase warm color is used to describe any color that is vivid or bold in nature.

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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 colours are pairs of colours that contrast with each other more than any other colour, and when placed side-by-side make each other look brighter.

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Monochromatic color refers to a color scheme that is comprised of variations of one color.

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Gradients, also known as color transitions, are a gradual blending from one color to another color.

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Constructive criticism focuses on providing constructive feedback, supported by specific examples, to help you improve in some area.

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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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Moral principles that govern a person's behavior or the conducting of an activity.

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A thing aimed at or sought; a goal.

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

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The exclusive legal right, given to an originator or an assignee to print, publish, perform, film, or record literary, artistic, or musical material, and to authorize others to do the same.

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A symbol, word, or words legally registered or established by use as representing a company or product.

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The rule of thirds is a composition guideline that places your subject in the left or right third of an image, leaving the other two thirds more open.

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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. That divine ratio is 1.618:1.

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Negative space photography is related to minimalist photography. It emphasizes not just the subject, but the empty space around the subject.

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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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A controlled technique of lighting, used in photography or the theater, in which a light is placed behind or at right angles to an object, person, or scene to produce such effects as depth or separation of subject and background.

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Diffused light is a soft light with neither the intensity nor the glare of direct light. It is scattered and comes from all directions.

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Ambient lighting, or what is commonly called as general lighting, serves as the primary source of light for a certain room

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An effect of contrasted light and shadow created by light falling unevenly or from a particular direction on something.

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The dark shape and outline of someone or something visible against a lighter background, especially in dim light.

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Diptychs are a set of two photos you can use to tell a story and emphasize contrast.

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A picture (such as an altarpiece) or carving in three panels side by side.

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A method of projection in which an object is depicted or a surface mapped using parallel lines to project its shape onto a plane.

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In geometric optics, distortion is a deviation from rectilinear projection; a projection in which straight lines in a scene remain straight in an image.

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Pincushion distortion produces the opposite effect from barrel distortion. Instead of an image curving in, pincushion distortion causes straight lines to curve outwards from the center of the image

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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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an arbitrary rating of film speed; that is, the sensitivity of the film to light. If everything else is kept constant, the required exposure time is inversely proportional to the ASA rating.

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An image sensor is a device that allows the camera to convert photons – that is, light – into electrical signals that can be interpreted by the device.

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Film grain is the visible silver crystals in a film negative's emulsion.

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Just like with sound, where noise refers to auditory disruptions, in photography, the term digital noise refers to visual distortion. Noise looks like tiny colored pixels or specks in your photograph, and sometimes resembles the grain that you may see in film photography.

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

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The “f” in f-stop stands for the focal length of the lens.

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The focal length of a lens is determined when the lens is focused at infinity. Lens focal length tells us the angle of view—how much of the scene will be captured—and the magnification—how large individual elements will be.

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Depth of field is the distance between the closest and farthest objects in a photo that appears acceptably sharp.

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The blurred quality or effect seen in the out-of-focus portion of a photograph taken with a narrow depth of field

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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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In program mode the camera selects and sets both the shutter speed and the aperture. It allows you to change your ISO.

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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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Shutter Priority is a semi-automatic camera mode that allows you to set the shutter speed and ISO, while your camera sets the aperture.

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Aperture priority is a camera mode in which you manually set your aperture, while the camera automatically selects a shutter speed.

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

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Bulb Mode is an exposure setting that is used when seeking to use a shutter speed of more than 30 seconds.

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Motion blur is the visual streaking or smearing captured on camera as a result of a moving camera, subject, or a combination of the two.

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In photography, a tripod is a portable device used to support, stabilize and elevate a camera, a flash unit, or other videographic

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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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Long exposure photography is the name given to the technique in which the camera's shutter is left open during a somewhat lengthy period of time.

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Time-lapse photography is used to capture change or movement that occurs over a long period time.

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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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Panning photography freezes objects in motion in a still frame.

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Burst mode, also called continuous shooting mode, sports mode, continuous mode, or burst shot, is a shooting mode in still cameras where several photos are captured in quick succession by either pressing the shutter button or holding it down.

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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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Whereas multi-segment or multi-zone metering takes exposure readings from across the whole image frame, in spot metering mode the camera takes a measurement from a single point or spot. This area is often at the centre of the frame, but it may be linked to the active AF point.

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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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Center-weighted Metering evaluates the light in the middle of the frame and its surroundings and ignores the corners.

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On most cameras, the default mode is evaluative metering, as it carries out metering across the entire image and therefore suits all sorts of scenes and subject conditions

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A shadow is the result of the relationship between the subject's location and the direction of the light source.

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Midtones consist of the middle 50% of the tonal range. The shadow and dark areas make up 25% of the tonal range, as do the lights and highlights on the other end of the tonal range. Darks and shadows appear on the left of a histogram and a tone curve.

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Highlights are the lightest elements in an image, whereas shadows are the darkest areas.

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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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An AF point is a specific part of the frame where the camera is able to focus on something.

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Basically, when you bracket your shots you take exactly the same picture of your subject at several different exposures.

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In photography, exposure value (EV) is a number that represents a combination of a camera's shutter speed and f-number, such that all combinations that yield the same exposure have the same EV (for any fixed scene luminance).

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Exposure compensation basically helps you override automatic exposure adjustments your camera makes in situations with uneven light distribution, filters, non-standard processing, or underexposure or overexposure

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A white balance card (or gray card) helps you adjust the white balance and exposure settings of images by providing a reference point.

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Workspace Switcher displays a visual representation of your workspaces.

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A toolbar is part of a window, often a bar across the top, that contains buttons that execute commands when you click them.

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A palette is the set of available colors from which an image can be made.