Camera technology, jargon and techniques explained • Use the A-Z index or the search box to look up your chosen term
The Levels dialog should be the first stop for examining and fixing photos. Almost all image-editors offer a Levels adjustment in one form or another. The annotation might look complicated, but the histogram and the sliders below (items 1-4) quickly [...]
The white point is part of an image that corresponds to a full, neutral white, and it’s often a factor in maximising an image’s contrast or neutralising colour casts. You can set the white point with the Levels dialog in Photoshop [...]
Used to adjust brightness or colour of midtones. Moving the gray point slider in the Levels dialog in Photoshop or Elements will lighten or darken the image. If you click on an area of an image with the gray point [...]
A point in an image corresponding to a solid black. Most photos look better if they have a full range of tones from solid black to brilliant white. The black point in an image is an area of solid black. [...]
Auto Levels optimises both colour and contrast at the same time by maximising the tonal range of the red, green and blue colour channels individually. This produces maximum overall contrast (without ‘clipping’) but it may distort the image’s colour balance. This [...]