1) What’s Shutter Speed and Why Does It Matter?

Shutter speed measures the length of time that the shutter stays open to let light through the aperture and fall on the sensor that records your image. It’s like opening and closing the blinds to let light in—or keep it out.

Whenever you take a photo, the camera performs two functions:

2) It opens up the aperture to the correct size for that exposure

b) It removes the cover from in front of the sensor to allow light to reach it.

Once the exposure time is completed, the camera moves the shutter back in front of the sensor, blocking more light from reaching it.


The following two tabs change content below.

Ed Mercer

I am the other half of our husband and wife Photography studio with my wife of 41 years Sue. We opened our studio in Danvers, Ma in February of 1979. As members of Professional Photographers of Mass, New England and America, our goal in life is simple – Capture the beauty in every subject and create timeless joy to share. We are still at it after all these years and love what we do as much as when we started. Together we are also teaching and coaching photography, image editing, and the business of photography.

Latest posts by Ed Mercer (see all)