Tuesday, 3 July 2012

Measuring Exposure - Part 1

Exercise - 4-6 photographs

For this exercise I have to produce between 4 and 6 images which are deliberately lighter or darker than average and explain why.

Image 1
In this image the subject and background are both light in colour. I deliberately exposed the image so that there were no harsh shadows as I wanted the image to have a soft ethereal feel to it. To help soften any shadows the subject was photographed in a light tent to diffuse the lighting. When photographing light subjects its easy for the camera to underexpose and render the background darker than it actually is. In this case spot metering was used so only a slight +EV value was required.

shutter speed 1/4sec, f/5.6, ISO100

Image 2
This is a high key black and white image of my nephew. It was taken in natural window light with a white reflector used to fill any shadow areas. Matrix metering was used and the camera flash suppressed to avoid any overexposed areas in the image.
shutter speed 1/60sec, f/4, ISO700
 Both of these images were exposed deliberately lighter than average which is confirmed by studying the histograms which are heavily weighted to the right indicating that the majority of the tones within the images are lighter than mid grey.

Image 3
shutter speed 1/160sec, f/9. ISO400
This is an example of an image which is deliberately darker than average. In order to maintain the saturated colours and overall mood of the image I used spot metering in this instance.
Image 4
shutter speed 1/1250sec, f/6.3, ISO200
This image is also darker than average. The subject is relatively bright in contrast to the darker background. Matrix metering was used in this instance and has captured the contrast in the scene well without any further adjustment in exposure being required.


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