For the first part of this exercise I am to take similar shots at both normal and high sensitivity. My first pair of images were taken at 100 and 400 ISO, (see below), the contrast wasn’t that obvious, I therefore decided to up the ISO from 200 comparing it with 1600 so the difference in images could be seen more easily.
First set of images shot at 100 and 400 ISO. As you can see, there is little difference in the two images.
Below are the sets of images with the ISO’s set higher at 200 and 1600. The obvious difference is that the higher the ISO the brighter the picture but with the disadvantage of the shot being a more grainy speckled texture when blown up, either on screen or print. I have tried to include close up shots so that more detail can be seen, landscape shots and images including direct sunlight so that all of the images can be compared and if some are more obvious than others.
From looking at the sets of images above, I have taken note that close up images compared with the others that feature either direct sunlight/sky or landscape, are not as obvious that the ISO has changed.
I have learned that if an image is being used specifically as a large blown up piece, then the lower the ISO setting the better as this will give a more detailed clearer image, but if the photo is being printed on a much smaller scale the ISO setting at the time the image is taken wouldn’t really have an effect on the final image printed.