subject stand out and present it to best advantage.
Unsharpness and blur are effective ways for separating
the subject from the background. Unsharpness can be
accomplished by using a relatively large f/stop to render
the background out of focus. In the case of subjects in
record the subject unsharp or blurred and the
background sharp. This is done to create the impression
of the subject being closer to the viewer or to express
motion by holding the camera still as you use a shutter
speed that is too slow to "stop" the motion.
positions and sizes and the space between them. In other
is the way real three-dimensional objects are pictured in
a photograph that has a two-dimensional plane. In
photography, perspective is another illusion you use to
produce photographs of quality composition.
produces perspective, many novice photographers
believe there is no need to know much about it. This
attitude is far from correct. When you know the
principles of perspective and skillfully apply them, the
photographs you produce show a good rendition of the
subject's form and shape, and the viewer is given the
sensation of volume, space, depth, and distance.
Additionally, the photographer can manipulate
perspective to change the illusion of space and distance
by either expanding or compressing these factors,
therefore providing a sense of scale within the picture.
perspective. This perspective changes as the camera
position or viewpoint changes. From a given position,
position, does not change the actual viewpoint, but may
change the apparent viewpoint.
helps you alter linear perspective in your pictures. When
the focal length of the lens is changed but the
lens-to-subject distance remains unchanged, there is a
change in the image size of the objects, but no change
in perspective. On the other hand, when the
lens-to-subject distance and lens focal length are both
changed, the relationship between objects is altered and
perspective is changed. By using the right combination
of camera-to-subject distance and lens focal length, a
photographer can create a picture that looks deep or
shallow. This feeling of depth or shallowness is only an
illusion, but it is an important compositional factor.
picture with greater depth (not to be confused with depth
of field) than would be produced with a standard lens.
Conversely, using a long-focal-length lens from a more
distant viewpoint produces a picture with less apparent
lines that are straight in the subject are reproduced
straight in the picture. Most pictures are made with
produces panoramic or cylindrical perspective. In other
words, all straight horizontal lines at the lens axis level
are recorded as straight lines, and all other straight
horizontal lines either above or below the lens axis level
are reproduced as curved lines. The other false
perspective is produced by a fisheye lens in which all
straight lines in the subject are imaged as curved lines
toward the edges of the picture.
parallel lines, either horizontal or vertical, are
Basic Photography Course