Aperture of the lens - adjustment of the “iris”, which controls the amount of light entering the lens.
Auto-focus - the selection of a point in the imaging frame upon which the auto-focus system will attempt to focus.
Depth of field (DOF) - is the distance in front of and beyond the subject that appears to be in focus.
Film speed - is the measure of a photographic film’s sensitivity to light.
Image noise or Film grain - is a random, usually unwanted, fluctuation of pixel values in an image.
ISO - on film cameras it’s an indicator of the selected film speed on film cameras, on digital cameras it’s an indication of the imaging chip’s light sensitivity.
Motion blur - is the apparent streaking of rapidly moving objects in a still image.
Shutter speed - adjustment of the speed of the shutter to control the amount of time during which the imaging medium is exposed to light per each exposure.
Photography - is the process of making pictures by means of the action of capturing light on a film.
White balance - electronic compensation for the color temperature associated with a given set of lighting conditions, ensuring that white light is registered as such on the imaging chip and therefore that the colors in the frame will appear natural.
more to come….
Tags: photo, photography, glossary, terms
January 21st, 2007 at 11:44 am
[...] at Photo Tips, Digital Photo and Digital Photo Cameras « Looking for terms? - Part 1 tech claim » [...]
January 22nd, 2007 at 10:04 pm
[...] Now that you have the 3 elements requested (tripod, background, lamp), let’s start using them. One rule in photography is about how busy the background is. If you take a picture of your object with the library behind, for example, the person who looks at the picture will loose the concentration over the subject of the photo (the object) by being distracted because of the many colors and shapes of the books. Also, the light in your room is not to compare with the light outside (it’s darker, right?), and then you can control the amount of light you need, and the direction of it (to cast the right shadows) with the small lamps not the one on your above wall. Also, never use the flash in a macro shot. Since the light is not natural, consider using the custom white balance function of your camera by taking a picture of a known grey reference under the same lighting, and then set that (incorrect WB can create unsightly blue, orange, or even green colour casts, which are unrealistic). [...]