This week’s project is all about exposure. Since completing a couple of photography courses last year (both of which I was proud to receive a distinction for) I take all of my pictures in manual mode – although I usually take JPGs and haven’t quite built up the confidence to regularly take photographs in RAW.
A camera has been programmed to assume that any image is composed of 18% grey and so it doesn’t have anything to tell it what is an acceptable exposure, and what would be considered too dark or too light. That is why you need to take control of the exposure.
Of course, this is tricky if you are taking a photo of a white object on a white background or a black object on a black background as it will still assume everything as 18% grey unless you take control of your settings.
I have decided to try and do my corrections in camera rather than use an editing programme. I have used an Aperture Value of 4.5 and used the metering to adjust the shutter speed increasing by 1 stop and 2 stops on the white images and then decreasing by 1 stop and 2 stops on the black images.
The image below shows the meter reading line together with + and – stops. At the moment it is set to adjust the shutter speed (you can see the blue arrows either side of the 1/25) but at the push of a button you can then adjust the Aperture Value (where it says F4.5) to assist with the metering and, as a result, the exposure.
I used my Canon 1200D DSLR to take the photos below. The white images were taken at 0, +1 stop and +2 stops and the shutter speeds were 1/50 then 1/40 and 1/25.
The black images were at 0, -1 stop and -2 stops and shutter speeds of 1/25, 1/50 and 1/200.
I think I found the white on white images easier than the black. Which image do you like best?