Exposure Compensation; Backlit Subjects; Spotlighted Subjects - Pentax MV-1 Manual

EXPOSURE COMPENSATION
When shooting in difficult fighting situations such as when the subject
ts situated against the light (direct sun, snow, a bright window) or
when spotlighted on stage, etc., either additional or less exposure is
required to override the influence of the strong backlighting and
bring out the details of the subject. Such problems are easily
corrected by temporarily altering the setting of the ASA film speed
dial for the shot requiring exposure compensation.
Backlit Subjects: For subjects with the sun behind them, standing
against the light, bright snow, etc, compensate by lowering the
ASA film speed value to half or four times the ASA film speed.
For example:
With ASA 100 film in the camera: reset the dial to ASA 50 or
ASA 25 (this gives 2X and 4X compensation, respectively).
f',m: reset the ASA dial to ASA 200 <2X) or
ASA 100 (4X).
Spotlighted Subjects: For subjects on spotlighted stage, etc., decrease
your exposure by doubling or quadrupling the ASA film speed value.
For example:
With ASA 100 film: reset the dial to ASA 200 (1/2X)
or ASA 400 (1/4X).
With ASA 400 film: reset the dial to ASA 800 (1/2X)
or ASA 1600 (1/4X)
Always reset the ASA dial to its original setting after employing
exposure compensation.