•Press the CAL button on the WMU-1 to start the calibration process before entering any values.

•Turn the handwheel until ‘TBL EDIT’ is displayed. Press the SEL button to go to the input mode.

•Turn the handwheel to the left until the first T-stop of the iris ring of the lens being used is shown in the second line of the display.

This must be a full T-stop from the standard T-stop range.

•Then press the SEL button. ‘ADJ’ now flashes in the first line of the display.

•Adjust the iris ring of the lens to the displayed value using the handwheel.

•The T-stop is assigned by pressing the SET button. This is indicated in the first line with an ‘I’ next to ‘TBL’.

•In case you need to delete this assignment, press the SET button again. The ‘I’ next to ‘TBL’ disappears again.

•Turn the handwheel until the next T-stop on the iris ring of the lens being used is shown on the display. Assign this and the next T-stops as described above.

Controlling the Iris

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