Glossary | Photography Technical Terms

Depth of Field :

Is the guage of measuring the zone or distance over which any object in front of the lens will appear in pure sharpness.Situated both in front and behind the plane of best focus . Being effected by main three parameters being Lens aperture, Lens focal Length , and image magnification.
 Digital Photography an Introduction 2007 - By Tom Ang - DK Publishers 



Aperture: 
The lens opening in the camera that allows light to come onto the sensor. It is controlled by which we call an f-stop which the smaller the number the narrow the aperture and the lager the depth of field. Cambridge in Colour, 2014, Tutorials: Camera Exposure [online] Available at: http://www.cambridgeincolour.com/tutorials/camera-exposure.htm (Accessed on 28th January 2014)


EXPOSURE:


The exposure is the lenght of time that an image is exposed to light in order to be recorded on a camera sensor or 35mm film. The exposure is adjusted  accordinly to the effect desired, or the type of image being recodred. The 3 main adjustments for a correct exposure are made in the Shutter Speed, Apreture and ISO.

Composition:

is made up of; colour, light, line, space & mass, scale and texture. It is what makes up a photograph, how aesthetically pleasing the composition is.


CAMERA OBSCURA:

The camera obscura consists in a device (Box) that projects an image onto a bigger screen; artists used it as an aid for the accurate painting of a scene. It was on of the first inventions that triggered the road to photography and the camera its self.

The Magic Mirror of Life, 2008. What is a camera obscura?. [online] 
Available at: < http://brightbytes.com/cosite/what.html> 
[Accessed 26 December 2013].


Golden Spiral :

Also known as the rule of thirds, these are harmonious proportions, that photographers instinctively use to make pictures look good. 

Digital photography an introduction - By Tom Ang 2007 - DK publishers 


ETHNOGRAPHY :

The term Ethnography is the scientific study and proof of various communities with their own customs, habits and differences. As early as in the 1850s photography was used to document such exotic places and savagery, with the intention for both study and resale. These ethnographic images are of a great value to the anthropology world for the study of mankind.

Primary Source :

A primary source can also be referred to as an original source or even evidence. It is the original source of information about the topic, someone with direct knowledge on the subject is also considered a primary source.  

Primary source at yale 2014 - Primary Sources - online - available at http://www.yale.edu/collections_collaborative/primarysources/primarysources.html - Last accessed 28/01/2014



Secondary Source : 

Secondary source would be taken from documents or recordings that relate or discuss information originally presented elsewhere.Normally it is an analysis, or interpretation of the original source.