Prior to starting this exercise I read of a fellow DPP student's problem understanding the expected outcome of the exercise on the OCA Flickr group. I am glad I was made aware the coursework text is incorrect as I too would have thought I was totally dim ! http://www.flickr.com/groups/ocarts/discuss/72157628955228629/
Digital sensors respond to light in a different way to film and also how our own eyes react. The sensor responds to light in a linear, proportional, way and then performs a series of in-camera actions. Unlike the human eye it is unable to distinguish detail in the shadows and highlighted areas , this information is lost.
This exercise examines what an image looks like prior to the in-camera process and how the camera performs gamma correction curves to alter an image and make it appear more customary. I used a 16 bit Tiff as instructed (on my old PC using Elements not PS) and created a new darker image .
How I understand the exercise, and what it means in terms of creativity, is that the sensor records lines of light (linear capture). I need to be able to pre-visualise a scene as the camera sees it , ignore what I see, and use this knowledge to gain control over the final image. The projects in the remainder of Part 2 look at ways of how this may be achieved.