Model 636 Flash Exposure This test measures the
resultant energy on the film plane during a flash
exposure equivalent to a 4.5 ft graywall exposure.
NOTE: The following procedure assumes the camera is
on the horn.
DETAILED PROCEDURE SUMMARY
1. Set the camera L/D control to its 1. Camera L/D to mid-point
mid-point setting.
2. Turn the test selector switch to 2. Selector to 640 FLASH
640 FLASH EXPOSURE EXPOSURE.
3. Flip the mode switch to EXPOSURE. 3. Mode switch to EXPOSURE
4. Orient the camera on the horn so 4. Camera 4.5 ft from graywall
it is exactly 4.5 ft from a graywall.
5. With photocell uncovered, press 5. Take flash exposure.
S10/S1 to take a flash exposure.
6. When strobe fires, record reading 6. Compare reading to
shown on Relative Error in Stops meter spec.
Compare reading to the specification.
7. Repeat steps 5 and 6 two more 7. Repeat 5 & 6 twice
times to insure accurate reading.
8. If reading is not within specifi- 8. If out of spec, see Adjustments.
cation, refer to Adjustments.
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