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A full-frame camera uses a sensor that's the same size as a single frame of traditional 35mm film, measuring 36 x 24mm. The more popular APS-C sensor size found in most DSLRs and mirrorless cameras measures 22 x 15mm. This means a full-frame sensor has more than 2.5 times the surface area of an APS-C sensor.

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Advanced Photo System type-C (APS-C) is an image sensor format approximately equivalent in size to the Advanced Photo System film negative in its C("Classic") format, of 25.1×16.7 mm, an aspect ratio of 3:2.

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The ratio of a camera sensor's size to a 35mm film frame. Use it to calculate effective focal lengths and compare lenses between DSLRs. Crop factor is a term that describes the difference between your camera's sensor size and a traditional 35mm film frame.

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In film and photography, a prime lens is a fixed focal length photographic lens, typically with a maximum aperture from f2.8 to f1.2. The term can also mean the primary lens in a combination lens system.

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A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed focal length (FFL) lens (see prime lens). A true zoom lens, also called a parfocal lens, is one that maintains focus when its focal length changes.

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Workspace Basics. Photoshop CS6. You create and manipulate your documents and files using various elements, such as panels, bars, and windows. Any arrangement of these elements is called a workspace.

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A thin board or slab on which an artist lays and mixes colors.

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Makes freehand selection

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Selects similarly colored image areas

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Creates straight edged selections

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Makes a selection by following the edges in an image

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Makes a selection in the shape of a rectangle

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Removes spots from your photos.

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Removes spots from your photo by selecting a part of your photo as the reference point.

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Part of the healing brush set of tools. These are the go-to tools for retouching and repairing your images. The Patch Tool is primarily used to repair larger areas of an image, or get rid of any distractions or blemishes.

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Paints with an image sample, which you can use to duplicate objects, remove image imperfections, or paint over objects in your photo. You can also clone part of an image to another image.

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Moves selections or layers.

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Lightens areas of an image. You can use the tool to bring out details in shadows.

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Darkens areas of the image. You can use the tool to bring out details in highlights.

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Changes the color saturation of an area.

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Softens hard edges or areas in an image by reducing details.

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Sharpens a photo by focusing soft edges in the photo to increase clarity or focus.

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Simulates the actions of dragging a finger through wet paint. The tool picks up color where the stroke begins and pushes it in the direction you drag.

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Removes the red eye effect, pet eye effect, and corrects closed eyes in your photos.

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Fills in an area of image by a gradient.

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A fundamental tool in image manipulations. They allow you to selectively modify the opacity (transparency) of the layer they belong to. This differs from the use of the layer Opacity slider as a mask has the ability to selectively modify the opacity of different areas across a single layer.

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A group of a super useful, non-destructive image editing tools that add color and tonal adjustments to your image without permanently changing its pixels. With the adjustment layers, you can edit and discard your adjustments or restore your original image at any time.

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In photography, painting, and other visual arts, middle gray or middle grey is a tone that is perceptually about halfway between black and white on a lightness scale; in photography, and printing, it is typically defined as 18% reflectance in visible light.

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Spot metering is where the camera determines a proper exposure not on the average brightness levels of the whole frame, but just of one specific spot. This photographer, like me, is principally a landscape photographer.

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Partial metering is one of four modes found mostly on Canon cameras to help measure a subject's brightness. ... Spot metering on Nikon cameras work very similar to partial metering on Canon cameras.

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Matrix Metering or Evaluative Metering mode is the default metering mode on most DSLRs. It works similarly to the above example by dividing the entire frame into multiple “zones”, which are then all analyzed on individual basis for light and dark tones.

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A mode of automatic light metering in a camera that compensates for differences in the brightness of the central and peripheral portions of the image.