Canon Optura Instruction Manual page 38

Giving priority to the aperture (aperture-priority: Av)
E
Use this program to let you select the aperture
(iris diameter) to give you maximum control
over the depth of field (the picture's zone of
sharp focus). It is the reverse of shutter-priority.
The camera sets the appropriate shutter speed
automatically to give the correct exposure.
Wide apertures (lower F-numbers) are great for making still-lifes and close-ups
stand out from a softened foreground and background. The effect is most
noticeable when the zoom is towards the telephoto end. Focus manually for
maximum accuracy and be careful when recording action scenes, as this program
may cause "strobing" of fast moving images. Choose a wider aperture to enable
you to shoot in low-light conditions.
When you turn the program selector to Av the current F (aperture) number is
shown in the display. Select your desired F number by turning the Av/Tv CTRL.
You can choose F numbers of between F1.8 and F32. For smaller aperture, select
a higher value for the F number.
Notes :
• The Tv and Av values are reset if you turn the power off or turn the program
selector to another setting. If you turn the standby lever to LOCK, the camera
remembers your chosen values.
• You are able to press and hold the Av/Tv CTRL (EXP wheel) after setting the
Av or Tv to lock/adjust the exposure (p. 46).
• When shooting using the Av program, if the F number display flashes the camera
has not been able to set the exposure correctly. In such a case, change the setting
so that the display stops flashing and lights up continuously.
Negative-Positive Conversion
Records a color negative of the image. White
appears as black, yellow appears as blue, green
appears as red, etc. Also converts a negative
image to an ordinary positive one. This can also
be used with the optional accessories FP-100
Film Adapter and SL-49/46 Step-down
Converter Lens to transfer 35mm film negatives
to the camera.
• You can use exposure adjustment, but you should do so before adjusting any
other settings such as white balance.
• You can also then adjust the tint and color.
38
Av F3.2
Av
NEGATIVE