Sony E 10-18 mm f/ 4 OSS Lens Техническое Руководство

4-6

SAL28F28 (2.8/28) (28mm F2.8)

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)

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”.

Calculate button

Check the “G” value