Basic Photography Course

PH3 Tim O'Neill

302.95

Figure 4-17.Panning with a moving object.

can be tolerated before it becomes objectionable and
adjust your shutter speed accordingly. To determine
what forms an objectionable blurring of the image, you
must visualize how the photograph is going to be used.
An image of a contact print can be much blurrier than
an image that is magnified many times. A print that is
viewed up close must be much sharper than a print

viewed from a distance.

Once you know how the photograph is to be used,

you can determine the shutter speed required to produce
an acceptably sharp image. In some situations, it may
not be possible to produce an image that is completely
sharp. When you want a sharp image of a fast-moving
object, use the panning technique. When using the

panning technique, you move the camera and follow the
action of the subject until you make the exposure. This

method may blur the background but can provide a sharp
image of a moving object even at relatively slow shutter
speeds (fig. 4-17).

There are five factors that determine the distance an

image moves on the film during exposure. You must
consider these factors each time you photograph a
moving object. These five factors are as follows:

1. The lens-to-subject distance

2. The lens focal length

3. The speed of the object perpendicular to the lens

axis

4. The direction of movement

5. The exposure time

Whenever one of these five factors change, the

distance the image moves during exposure also changes.
The first four factors determine the speed that the image
moves across the film. The fifth factor limits the time it
is allowed to move, thereby limiting the distance of
image movement.

Subject movement on the film plane is greatest

when the subject is moving across the angle of view of

4-15

contents

Basic Photography Course

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DOFMaster for Windows On-line Depth of Field Calculator DOFMaster for Mobile Devices On-line Depth of Field Table Hyperfocal Distance Chart Articles FAQ Recommended Books Support Contact Links Home As an Amazon Associate I earn from qualifying purchases.	contents <- previous page next page -> PH3 Tim O'Neill 302.95 Figure 4-17.Panning with a moving object. can be tolerated before it becomes objectionable and adjust your shutter speed accordingly. To determine what forms an objectionable blurring of the image, you must visualize how the photograph is going to be used. An image of a contact print can be much blurrier than an image that is magnified many times. A print that is viewed up close must be much sharper than a print viewed from a distance. Once you know how the photograph is to be used, you can determine the shutter speed required to produce an acceptably sharp image. In some situations, it may not be possible to produce an image that is completely sharp. When you want a sharp image of a fast-moving object, use the panning technique. When using the panning technique, you move the camera and follow the action of the subject until you make the exposure. This method may blur the background but can provide a sharp image of a moving object even at relatively slow shutter speeds (fig. 4-17). There are five factors that determine the distance an image moves on the film during exposure. You must consider these factors each time you photograph a moving object. These five factors are as follows: 1. The lens-to-subject distance 2. The lens focal length 3. The speed of the object perpendicular to the lens axis 4. The direction of movement 5. The exposure time Whenever one of these five factors change, the distance the image moves during exposure also changes. The first four factors determine the speed that the image moves across the film. The fifth factor limits the time it is allowed to move, thereby limiting the distance of image movement. Subject movement on the film plane is greatest when the subject is moving across the angle of view of 4-15 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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