42. When an object is moving directly toward or away from
the camera, no sideways movement is recorded so a
minimum of blur is produced, even at a relatively slow
shutter speed.
Other factors contribute (like ISO and White Balance), but these three are the most important to understand in order to get the most out of your photography.
Here the viewfinder shows that the shutter speed is 1/250th of a second and the aperture is at f16.
Here the viewfinder shows that the shutter speed is 1/250th of a second and the aperture is at f16.
Generally, leaf shutters are located inside the lens.
The “ leaves ” open and close to let in light.
Focal-plane shutters are built into the camera body. The curtains move across the sensor exposing it to light in equal amounts.
Here you can see that the stops are double or half the stop above or below them.
These are the actual numbers that the analog camera displays for each of these full stops.
(Ask students how fast some of the numbers are: ie.: 30 = 1/30th of a second. Explain that the “ B ” setting means “ bulb ” and the shutter stays open as long as the shutter button is depressed.) Numbers in white dial window are ISO speeds. We will talk about ISO later.
The more sophisticated the camera, the more adjustments are possible. These are some common stop adjustments.
panned
panned
When planning to pan,decide where you want the subject to be at the moment of exposure, start moving the camera a few moments before the object reaches that point, and continue that motion after the exposure (follow through) as you would with a golf or tennis stroke.
Generally, the amount of motion blur will double if you increase the shutter speed by one stop (toward a longer time). Say change shutter speed from 1/60 to 1/30 of a second.
Here are some general shutter speed guidelines for taking photos with action parallel to the image plane.
Notice that the closer you are to the subject, the faster your shutter speed must be.
Here the boy jumps from an overturned garbage can for a slam dunk. Because the photo was taken at the peak of the action where it slows down, the shutter speed does not have to be as fast.
