Filter
Top Products
Figure 2: Command Dial
ing. The primary advantage of P mode over full auto mode is that in P mode you can
use the Main Dial to shift the relative values of the shutter and aperture selection. This
is called Program Shift and it provides a way for you to bias the exposuretowards faster
shutter speeds or smaller apertures while the camera insures accurate exposures. You
can also use the Quick Control Dial (QCD) on the camera back, to bias the exposure up
(lighter images) or down (darker images) depending on the effect that you want. This
is called Auto Exposure Compensation (AEC), and is only the ambient exposure bias.
It does not effect flash exposure.
Tv is for time value mode, also called "shutter priority." You set the shutter speed
with the Main Dial, based on the need to freeze action or portray subject movement
or simply for hand hold ability. The camera then selects an appropriate aperture for
correct exposure. While in Tv mode you can also use the QCD to change the exposure
up or down (AEC). This is only ambient exposure bias and it does not effect the flash
exposure.
Any shutter speed can be set between 1/4000 second to 30 seconds. Below 30
seconds the shutter goes into Bulb mode where it will stay open as long as you hold
the shutter button down or until the battery goes flat. The remote controller, RC-1 and
the remote switch, RS-60E3 both have methods to manually hold the shutter open as
long as you like.
Av is for aperture value mode, also called "aperture priority." You select the aperture
with the Main Dial, based on the need to limit or expand depth of field/focus, and the
camera selects a shutter speed to provide the proper exposure. Av mode can also be
used when you want to select the fastest shutter speed possible and still maintain proper
exposure in changing light. To do that you just set the aperture to the largest setting
6