T&P 2A – Outcome 2 -Inverse Square Law 1-Experimentation and Outcome – Page 51-54

Inverse Square Law

Double the distance equals 1/4 of light intensity.

http://petapixel.com/2014/09/28/this-handy-little-web-app-will-help-you-visualize-dof-across-various-formats-and-focal-lengths/

Reciprocity Law Failure

exposure= intensity x time

This equation “breaks down at extremely long ( and short ) exposure times, known as Reciprocity failure.”(Langford, Fox & Smith, 2010)

http://pubs.rsna.org/na101/home/literatum/publisher/rsna/journals/content/radiology/1944/radiology.1944.42.issue-5/42.5.471/production/42.5.471.fp.png_v03

Colour Temperature 

Is calculated in Kelvin (k). In digital cameras like the DSLR it mostly attained from the white balance, where colour variants can be obtained from here. For a photographic film the colour temperature might vary even more. One should make sure that the colour balance is well corrected as it might result into an orange or blue effect when printing out the photos. The neutrality and balancing is the ultimate goal when working with Film photography.  Film and Camera stills obtain their white balance from the objects that they are projecting with.

After analyzing the Inverse Square Law , the concept of reciprocity law failure and colour temperature I wanted to try to capture the real thing. Through employing different time speed; 1 sec, 8 sec, 1 min etc i was able to see the different outcomes of every shoot.

IMG_0793IMG_0789IMG_0796IMG_0797IMG_0799IMG_0802IMG_0790IMG_0794IMG_0814IMG_0815IMG_0816IMG_0817IMG_081802 03 05 07 08 11

Bibliography :

Langford, M., Fox, A., & Smith, R. (2010). Langford’s basic photography (1st ed., p. 449). Oxford: Focal.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s