This exercise took a little time to complete as it is in two parts.
Following my research mentioned below I started off by looking at the term exposure, in Photo School by Michael Freeman he states that it is ” the amount of light reaching a film emulsion , being the product of time and intensity.”
Later on page 40 of the same book he states that there is no such thing as a correct exposure. If you, the photographer want an image darker or lighter than you have to interpret the meter reading accordingly.
So with the above in mind I set off to capture a number of images. With each one I let the camera chose the what it thought would be the correct exposure then I took two further shots one of which showed as over exposed and a second that the camera showed as under exposed.
This image was taken outside a ladies shop in Surrey, there are always interesting displays, according to my wife. The dress to the right of the door is blown out and you can not see any detail.
As you can see the sun was shining on the shop front and this has effected the reading of the camera as I took the reading from the shadow area by the bike.
This under exposed image was taken straight after by letting the camera focus on the dress (in bright sunshine) the camera has under exposed the shot. The detail in the window is missing as is the bottom of the shot.
These flowers and the bird were also outside a shop. The sun was again shining straight as the shop as it was about 1300hrs. Again i forced the camera to overexpose the shot. The detail in the white flowers is almost gone as is the detail of the bird’s head.
This image although darker has exactly the same problems lack of detail, more so in the red flowers this time. Again the bottom of the image is also missing.
This image , taken of the front of a church, is clearly over exposed. The detail in the stone is missing and the roof tiles are not black as they should be.
This image shows how much more detail can be obtained by correct exposure. Even though this image is very dark you can see more detail in the stone walls. Similar problems can be seen with the detail on the edges of the images missing.
I took this image as I wanted to get a close-up of an image that contained shadow. I wanted to see what effect the under/over exposure would have on the shadow from each of the lights and the headlight itself.
Here you can see the shadows are clear and there is a bit of reflecting in the back of the bulb.
Of all the images taken these two are the most similar you can see the same shadow although the colour is not a deep. The body work of the Land Rover is blown out as is the detail of the lights.
As I reviewed each of the images above, although each one of them would be considered to be of a poor quality in relation to exposure, is that there is some detail in each one of them. If you added both of the images together to create a single image then there would be a chance that the image would be usable. I think that this is how HDR images are done. See example below.
- Merged to HDR