I created an F-Stop chart that illustrates the features of the photo’s aperture and its relationship to the F-stop, lens, light, and depth of field.
F-Stop Chart Infographic
Free download F-Stop Chart PDF
Aperture refers to the lens aperture size of the camera and is measured at f-stops.
When adjusting the aperture, note that when the numerical value of the aperture is increased, the aperture becomes smaller and the amount of light passing through decreases.
by Mike Smith
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 numbers between two full stops. 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’s sweet spot for this lens.
The bigger the hole, the more light passes through the lens for higher shutter speed. A slower opening results in long shutter speeds 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