Checking Method, Specification | Sony SAL35F14G guide

4)Click the calculate button to measure the image.

5)After measuring, check the “G” values.

Average “G” value of the three images shoot with master lens: (a)

Average “G” value of the three images shoot with checking lens: (b)

Calculate button

Check the “G” value

Fig.4-2-7

3. Checking Method

1)Calculate aperture error using the following formula, and check that the aperture error is within the specification.

Aperture error = Average “G” value of master lens (a) - Average “G” value of checking lens (b)

Aperture error = 0 ±12

2)When the aperture error is out of specification, perform “4-2-2. Aperture Diameter Adjustment”.

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