Canon EOS-1V HS Instructions Manual page 75

If any of the film's first or last few frames is used for multiple exposures, the
exposures may not align exactly due to film advance characteristics.
• While multiple exposures are being taken, the multiple exposure icon <
blinks.
• To cancel the multiple exposure setting before taking multiple exposures, set
the number of multiple exposures to 1.
• To cancel the multiple exposure setting after you start taking multiple
exposures, follow steps 1 and 2 to set the number of multiple exposures blank.
When taking multiple exposures, you should underexpose each multiple
exposure by the amounts shown below. To underexpose, see "Setting Exposure
Compensation" on page 67.
Exposure Compensation Guide for Multiple Exposures
No. of Multiple Exposures
Underexposure Amount of Each Exposure
These exposure compensation amounts are only general guidelines. The
optimum amount depends on the scene. Experiment to find the optimum
compensation amount.
Multiple Exposures
2 3
–1.0 stop –1.5 stop
>
4
–2.0 stop
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