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Follow the steps below to adjust the relay back focus.
Steps Instructions Explanatory Notes
1Leave the Iris on the camera lens fully
open and adjust the camera back focus
until you have achieved the sharpest
image.
2Check that the film lens is at the best focus
before you check the back focus a second
time.
You will need a good quality monitor to
accurately judge the sharpness of the image.
By using a Putora 7A9 chart you will be able
to see the moiré effect of the test circles
visible through the relatively low definition of
the viewfinder.
3Lock the back focus and double check the
image.
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