In this second part of the metering exercise we are asked to take a ‘normal’ camera metering of any subject and then under and over expose the image to consider the differences and if any of the images with +/- compensation proves to be more successful.
1a) Metered exposure.
<img class=”size-full wp-image” id=”i-2142″ style=”font-style:normal;” alt=”Image” src=”https://cmacfarlane2010.files.wordpress.com/2014/01/dsc3849.jpg?w=290″ / – 1b) – 0.7 under metered exposure. 1c) – 1.3 under metered exposure
1d) +0.7 over metered exposure. 1e) +1.3 over metered exposure.
In the first image (1a) we can see the camera metering has left the subject underexposed. In this case, +0.7 (1d), the exposure compensation balances detail of the subject and the backdrop.
2a) Metered exposure.
2b) -0.7 under metered exposure 2c) -1.3 under metered exposure.
2d) +0.7 above metered exposure 2e) +1.3 above metered exposure.
In this case again the camera metering (2a) renders the vase underexposed. Somewhere in-between 2c) and 2d) is the ideal where the colour is rich and the whites aren’t too hot.
3a) Metered exposure.
3d) +0.7 above metered exposure 3e) +1.3 above metered exposure.
Again, my findings here are that over exposing the metering gives the best result.
4b) -0.7 under metered exposure. 4c) -1.3 under metered exposure
4d) +0.7 above metered exposure 4e)+1.3 above metered exposure
This image could be a low key or high key image. The metered image gives the best of both Worlds to adjust in edit. There are no technical difficulties in the 4e) that render the whites too hot. 4c) is of an underexposure that commits you to a low key image as bringing the blacks up would cause loss of image quality.
5 a) metered exposure.
5b) -0.7 under metered exposure. 5c) -1.3 under metered exposure.
5d) +0.7 above metered exposure. 5e) +1.3 above metered exposure.
I picked this combination to test against extreme dynamic range in this composition. In this case the camera provides the best exposure. Under exposing renders the posey grey (seen in 5b. and 5c.) with loss of detail and highlights are clipped in the overexposed posey ( seen in 5d. and 5e. )
As always you can’t be too prescriptive about how to expose for a variety of images as careful consideration needs to be given to every exposure to ensure the highest grade of colour and image quality. Using exposure compensation is not something I have done before as I normally dial up and down the shutter speed or aperture. Exposure compensation is essentially the same thing but a marginally easier short cut.
I am really quite familiar with exposure control so I am not sure too much was learnt from this but it’s always interesting to see how easily and quickly things can go wrong.