I created the F-Stop Chart that in diagram form illustrates the special aspects of photography aperture and its connection with the F-stop, lens, light, and depth of field.
In more detail, I wrote about the f-stop and aperture here.
F-Stop Chart Infographic
Free download F-Stop Chart PDF
Aperture refers to the size of the camera’s lens diaphragm and is measured in F-stops.
When you adjust the aperture, note that as the numerical value increases, the aperture becomes smaller and the amount of light that gets through decreases.
Full Stop – 1/2 Stop – 1/3 Stop
For most purposes, 1/2 stop is generally close enough, but some use 1/3 stop. There will be 2 number between two full stop. See more on F-Stop Chart.
Lens Sweet Spot
The lens sweet spot of a lens is the f-stop which to take optimally sharp shoots with the least distortion and diffraction. And get the best sharpness. It differs from one lens model to another.
The general rule is that should have retreated 2 f-stops away from the extreme aperture values.
Example: For my 24-70/4 (f4-f22) lens sweet spot is f/8 – f/11. F-Stop Chart illustrates the lens sweet spot for this lens.
Bigger the opening more light get through the lens making fast shutter speed. The smaller opening results in long shutter speed or darker photos.
Depth of Field (DOF)
Bigger the aperture the shallower Depth of Field. Smaller aperture makes the Depth of Field wider.
Also, you can read about f-stop in Wikipedia
MORE EXPOSURE RESOURCES
- ISO for Beginner
- Exposure Triangle in Photography
- The Depth of Field
- The Histogram in Photography
- White Balance is part of the Exposition
- Exposure Triangle cheat sheet
- Shutter speed chart
- F-Stop and Aperture in Landscape Photography
- 3 Easy Steps to Fix White Balance in Photoshop
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