# What is the relationship between stop and shutter speed

### Relationship between aperture & shutter speed - George Bennett A-level Photography

Aperture and Shutter speed are undoubtedly the two most important while if the aperture is large (Small F stop of or ), the depth of field. The aperture settings are commonly referred to as f-stops and have a NOTE: There is a reciprocal relationship between shutter speed and. Understanding the relationship between aperture and shutter speed will help For illustrations of the actual aperture in the lens and its relationship to the f-stop .

As we close down the opening in the lens smaller amount of lightthen we must slow down the speed of the shutter more lightso that the amount of light that enters the camera is the same as in the former setting. An example would be: So this means that since the lens is admitting more light, then the shutter must close by one "stop" faster. A "stop" means a certain amount of light.

### ShortCourses-Using Shutter Speed and Aperture Together

This concerns the actual Fortunately for us, figuring new shutter speed settings is simply multiplying or dividing - by 2. And fortunately for us, all cameras have automatic settings so that when we decide on a particular aperture, also called Aperture Priority, the camera chooses the correspondingly "correct" shutter speed.

And vice versa - for Shutter Priority, the camera then chooses the "correct" aperture. But there may come a time when we want to override the camera's automatic settings.

### Aperture & Shutter Speed Relationship, by Florence W Deems

With shutter speeds, each stop is a second or more, or a fraction of second indicating how long the shutter is open. The stops are arranged so that a change of 1 stop lets in half or twice the light of the next setting. If you make the shutter speed 1 stop slower letting in 1 stop more lightand an aperture 1 full stop smaller letting in 1 stop less lightthe exposure doesn't change.

In all modes other than manual this happens automatically. However, you increase the depth of field slightly and also the possibility of blur from camera or subject movement.

## The Relationship Between F-Stop and Shutter Speed

For fast-moving subjects you need a fast shutter speed although the focal length of the lens you are using, the closeness of the subject, and the direction in which it's moving also affect how motion is portrayed. The left image was shot at F I am not changing my ISO here, just the f-stop and shutter speeds for simplicity.

Understanding the Exposure Triangle - Relation Between Aperture, Shutter and ISO

The image on the right was exposed with: F with a shutter speed of 4 seconds and the same ISO in order to achieve the same exact exposure but just with different f-stops. In order to change the f-stop and have the same exposure I had to change the shutter speed to accommodate the fact that f is exactly THREE stops darker than f So I had to slow the shutter speed down by three stops. What do I mean by that? Well, there is a standard scale for f-stops and shutter speeds that I talk about in those posts and depending on your lens your range for f-stops might be: