Canon F-1, Brochure & Specs

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29 SHOOTING WITH CLOSE-UP ACCESSORIES
With few exceptions (noted in the instructions for the accessory), stopped-down
metering is necessary whenever you insert an accessory between the camera and
lens for close-up photography.
•
If you insert an accessory designed for AUTOMATIC diaphragm control, such
as the Auto Bellows or Bellows FL, between the camera and ANY lens, follow
the steps for stopped-down metering.
•
If you insert an accessory designed for MANUAL diaphragm control, such as
M Extension Tubes or Bellows M, between the camera and a NON-FD lens,
follow the steps for stopped-down metering. Turn the A-M ring of an FL lens
to ”M” for taking the shot (not necessary if Canon Macro Auto Ring and
Double Cable Release are used).
•
If you insert in accessory designed for MANUAL diaphragm control between
the camera and an FD lens, unless you use the Canon Macro Auto Ring
and Double Cable Release, first set the lens for manual diaphragm control
before mounting it on the accessory. Then follow the steps for stopped-down
metering.
Note
The instructions with the accessory will tell you whether or not manual diaphragm
control is necessary. The procedure differs according to the type of lens.
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