1. A tool for Graphic Design
Digital Photography
A tool for Graphic Design
Graphic Design: Digital Photography

2. Learning about Exposure – The Exposure Triangle
ISO
the
exposure
triangle
aperture
shutter speed
Graphic Design: Digital Photography

3. The Three Elements are:
ISO – the measure of a digital
camera sensor’s sensitivity to light
2. Aperture – the size of the opening in the
lens when a picture is taken
3. Shutter Speed – the amount of time
that the shutter is open
Graphic Design: Digital Photography

4. ISO
the
exposure
triangle
shutter speed
aperture
Most importantly – a change in one of the elements will impact the others. This means that you can never really isolate just one of the elements alone but always need to have the others in the back of your mind.
Graphic Design: Digital Photography

5. Exposure
Exposure is the total amount of light allowed to fall on the photographic medium (photographic film or image sensor) during the process of taking a photograph.
Graphic Design: Digital Photography

6. Optimum Exposure
"Correct" exposure may be defined as an exposure that achieves the effect the photographer intended.
Graphic Design: Digital Photography

7. Overexposed
A photograph may be described as overexposed when it has a loss of highlight detail, that is, when important bright parts of an image are "washed out" or effectively all white.
Graphic Design: Digital Photography

8. Underexposed
A photograph may be described as underexposed when it has a loss of shadow detail, that is, when important dark
areas are "muddy" or indistinguishable
from black
Graphic Design: Digital Photography

9. What is ISO? International Standardization Organization
In traditional (film) photography ISO (or ASA) was the indication of how sensitive a film was to light. It was measured in numbers (you’ve probably seen them on films – 100, 200, 400, 800 etc). The lower the number the lower the sensitivity of the film and the finer the grain in the shots you’re taking.
Graphic Design: Digital Photography

10. In Digital Photography ISO measures the sensitivity of the image sensor. The same principles apply as in film photography – the lower the number the less sensitive your camera is to light and the finer the grain.
Graphic Design: Digital Photography

11. Grain – film is the same as Noise – is digital
Graphic Design: Digital Photography

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14. Image on the left has exposure time of >10 seconds in low light
Image on the left has exposure time of >10 seconds in low light. The image on the right has adequate lighting and 0.1 second exposure.
Graphic Design: Digital Photography

15. Flower at 100 ISO Flower at 1600 ISO for comparison.JPG
Graphic Design: Digital Photography

16. Comparison of both images
Comparison of both images. This is a crop of a small section of each image displayed at 100%. The top portion was shot at 100 ISO, the bottom portion at 1600 ISO.
Graphic Design: Digital Photography

17. Your most likely to see noise in an underexposed image.
Graphic Design: Digital Photography

18. Graphic Design: Digital Photography