Relationship between lens aperture and shutter speed

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

relationship between lens aperture and shutter speed

Relationship between Aperture and Shutter Speed & Depth of Field: Aperture is controlled using dials on the camera although it is the lens that controls the f. The lens aperture is a diaphragm that is in the lens itself or NOTE: There is a reciprocal relationship between shutter speed and aperture. Classically, the "rule of thumb" for motion-freezing shutter speed has may be an indirect relationship due to the maximum aperture of the lens.

It's all about balance: Which combination you choose is down to the look you want to achieve: Do you want moving objects to be razor-sharp or have motion blur?

relationship between lens aperture and shutter speed

That's a lot to think about If you choose to shoot in one of the semi-automatic modes, the camera does most of the donkey work for you. Once you set an aperture in Aperture Priority mode, for example, the shutter speed will be set automatically.

The Exposure Triangle: aperture, shutter speed and ISO explained | TechRadar

If you decide to change the aperture, the camera will adjust the shutter speed accordingly to maintain the same exposure. It's a similar story with Shutter Priority mode: You can even use the Auto ISO option to let the camera handle that choice of sensitivity too. In Program mode, you can simply shift the combination of aperture and shutter speed with a spin of the camera's control dial. Of course, all of these adjustments rely on the camera having achieved the optimum exposure reading to begin with - and, as we learned last issue, this doesn't always happen.

This is where exposure compensation plays a part. It's also measured in stops: You can usually increase or decrease the exposure by up to five stops.

relationship between lens aperture and shutter speed

Small openings; small apertures, lead to longer shutter speeds. Because it gets a problem to keep your camera steady and furthermore your subject should remain fairly still.

relationship between lens aperture and shutter speed

With a small aperture more in the picture in front and behind our object appears to be sharp. So there is not much separation between our subject and the background look here. So then we choose some average combination somewehere in the middle.

Understanding the Relationship between Aperture and Shutter Speed

Just like the P for Program does. Well at least our lenses perform best somewhere between 5.

relationship between lens aperture and shutter speed

For most zoom lenses it might even be between 8 and So then why not? Because we do not like boring average pictures.

Because we do not use the P except when in Panic. No, we will decide for ourselves. As you've seen, shutter speeds and apertures each have a standard series of settings called "stops". 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.

relationship between lens aperture and shutter speed