Revisions
In 1976, the camera was revised slightly. This revised version is sometimes called the F-1n (not to be confused with the 1981 New F-1). All told 13 improvements were made. These changes were:
- Change the standard focusing screen from the A style (microprism only) to E style (split image with microprism ring).
- Widen the film advance lever offset from 15 degrees to 30 degrees.
- Decrease the winding stroke from 180 degrees to 139 degrees.
- Increase the maximum ASA from 2000 to 3200.
- Added a plastic tip to the advance lever.
- Changed the mirror to transmit more blue light, thus making the image brighter.
- Added a detent to the rewind crank to allow it to stay put when pulled out.
- Added the capability to take a screw-in type PC sync socket.
- Spring load the battery check position of the power switch.
- Increase the size of the shutter release cup.
- Added a soft rubber ring around the eyepiece.
- Added a film reminder holder to the camera back.
- Simplify multiple exposure procedure.
The number of focusing screens was also expanded from four to nine.
In 1980 Canon introduced "Laser Matte" focusing screens identified by an "L" in a circle on the screen's label. These Laser Matte screens were noticeably brighter than the earlier screens, and they were continued with the New F-1.
Read more about this topic: Canon F-1
Famous quotes containing the word revisions:
“The lore of our fathers is a fabric of sentences. In our hands it develops and changes, through more or less arbitrary and deliberate revisions and additions of our own, more or less directly occasioned by the continuing stimulation of our sense organs. It is a pale gray lore, black with fact and white with convention. But I have found no substantial reasons for concluding that there are any quite black threads in it, or any white ones.”
—Willard Van Orman Quine (b. 1908)