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Results tagged with terminology
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user 67
Questions about specific terms used within photography
4
votes
Accepted
Choosing a Gitzo Tripod head - deciphering series, model #, etc
The official explanation is at www.gitzo.com
As far as I can tell the Series is basically a size/weight indicator ranging from 00 (ultralight) to 5 (bulky).
- 23.7k
34
votes
Accepted
What is USM, and what are its pros and cons?
USM - Ultrasonic motor (This is the Canon Terminology)
This is a big improvement over older micro-motor based autofocus systems, which are significantly slower and louder. …
- 23.7k
3
votes
What does small depth of field mean?
The depth of field is based on the focal length of the lens, and the width of the aperture.
The key thing to think about is that the aperture size is inversely proportional to the depth of field.
Al …
- 23.7k
17
votes
Accepted
What is exposure compensation?
Exposure compensation changes the target exposure. Normally the camera is trying to work the settings to get about 18% grey (reflectance), but with exposure compensation of +1EV you are basically jus …
- 23.7k
19
votes
5
answers
2k
views
What is an ultra-wide lens?
What is the point at which a lens is considered "ultra-wide angle" vs just wide angle?
- 23.7k
40
votes
Accepted
What is "Hyperfocal Distance"?
The hyperfocal distance is the distance at which everything from 1/2 the distance to infinity is in focus.
For instance, if the hyperfocal distance of a particular lens at a particular aperture is 10 …
- 23.7k
23
votes
What is bokeh, exactly?
The areas which are out of focus are blurred in a shape matching that of the lens opening. The final shape is usually circular when shooting wide open, but when stopped down, the aperture blades modif …
- 23.7k