Canon EOS 1 Instruction Manual - Page 104

EOS-1 N RS Operation Notes, Guide No. x 0.8 / Subject distance = Aperture setting

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Additional Information for the EOS-1 N RS Model 8. EOS-1 N RS Operation Notes • When the shutter button is pressed lightly, there will be a sound as if the shutter was released. This is only the shutter's rear curtain positioning itself. • Use a blower brush to lightly blow off any dust from the pellicle mirror. If the mirror is really dirty, consult your nearest Canon Service Center. • During self-timer operation, etc., when the eyepiece is left uncovered, light entering through the eyepiece may affect the proper exposure setting. It may even strike the film. Be sure to cover the eyepiece with the eyepiece shutter. • If you include the sun or a bright light source within the viewfinder (especially near the edge), flare may result. • During manual flash photography, use the following formula to compensate for the reduced amount of light reaching the film due to the pellicle mirror. Guide No. x 0.8 / Subject distance = Aperture setting • When the Canon Speedlite 480EG is used for automatic flash photography, increase the normal aperture setting by 2/3 stop or decrease the 480EG's ISO setting by 2/3 EV (open up) to compensate for the reduced amount of light reaching the film due to the pellicle mirror. • The flash distance range for automatic flash exposures will be 20 percent shorter than the flash unit's specified distance range. (The 420EZ, 430EZ, and 540EZ flash unit's will display the flash distance range after the compensation is set.) • When using a handheld exposure meter to set the exposure manually, set an exposure compensation of +2/3 EV or set the handheld meter's ISO setting to 2/3 EV less than the normal ISO. This is to compensate for the reduced amount of light reaching the film due to the pellicle mirror. • When the EF 50mm f/1.0L USM lens is used, vignetting will occur due to the frame holding the fixed pellicle mirror in place. 104

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Additional Information for the EOS-1 N RS Model
104
•
When the shutter button is pressed lightly, there will be a sound as if the shutter was
released. This is only the shutter's rear curtain positioning itself.
•
Use a blower brush to lightly blow off any dust from the pellicle mirror. If the mirror is
really dirty, consult your nearest Canon Service Center.
•
During self-timer operation, etc., when the eyepiece is left uncovered, light entering
through the eyepiece may affect the proper exposure setting. It may even strike the
film. Be sure to cover the eyepiece with the eyepiece shutter.
•
If you include the sun or a bright light source within the viewfinder (especially near the
edge), flare may result.
•
During manual flash photography, use the following formula to compensate for the
reduced amount of light reaching the film due to the pellicle mirror.
Guide No. x 0.8 / Subject distance = Aperture setting
•
When the Canon Speedlite 480EG is used for automatic flash photography, increase
the normal aperture setting by 2/3 stop or decrease the 480EG’s ISO setting by 2/3 EV
(open up) to compensate for the reduced amount of light reaching the film due to the
pellicle mirror.
•
The flash distance range for automatic flash exposures will be 20 percent shorter than
the flash unit's specified distance range. (The 420EZ, 430EZ, and 540EZ flash unit's
will display the flash distance range after the compensation is set.)
•
When using a handheld exposure meter to set the exposure manually, set an expo-
sure compensation of +2/3 EV or set the handheld meter’s ISO setting to 2/3 EV less
than the normal ISO. This is to compensate for the reduced amount of light reaching
the film due to the pellicle mirror.
•
When the EF 50mm f/1.0L USM lens is used, vignetting will occur due to the frame
holding the fixed pellicle mirror in place.
8.
EOS-1 N RS Operation Notes