Today I will continue with the Photography Glossary, with terms beginning with D and E.
D
Depth of Field- the depth of field is an area of sharpness in front of and behind the subject of the photo. This area depends on three factors; aperture, focal length, and focused distance. The wider the aperture, the longer the focal length is, and the closer the focus distance is, the less the depth of field will be. This is a very important element in taking great pictures. The simple way to explain it, is that the amount of distance between the nearest and farthest objects that appear in a photograph. See aperture as well.
Diffusing- this means to soften the details of a photography by scattering the light a bit. This can be achieved with filters, or some material that will scatter the light a bit.
Double Exposure- this is an interesting effect. Double exposure means to place two photographs in one frame, basically, or to place two images on the same piece of photographic paper. Many people (back when we would use film cameras) would do this by accident, but when you do it on purpose, you can get very interesting effects. In this age of digital photography, this is generally done with photo editing software. To get the most realistic double exposure effects, you will need to adjust the opacity of the different layers that you are working with. Here is an example of a double exposure:
Exposure- This is simply the amount of light allowed to act on the film (or image processor). This is the result of the intensity (lens opening) and the time that the shutter is open.
Exposure Compensation- Changing the shutter speed, and/or the aperture to adjust for available light.
Look for more posts tomorrow when I will continue with terms beginning with F and G.
Part 1: A
Part 2- B&C
Part 4: F
Part 5: F (cont)
Part 6: G-L
Part 7: M-P
Part 8: Q-Z