Sony SAL20F28 Service Manual page 33

2. Checking of Image
Note: Check the image of both master lens and checking lens.
1) Start the Color Calculator 2.
2) Read the image from the file menu.
3) Set the Color Calculator 2 as follows.
Measured value display (Display menu): RGB+L*a*b*
Measuring method (Display menu):
Color space (Edit menu): sRGB
Area size for calculate (Edit menu →Option): 256×256 Pixels
Fig.4-2-7
SAL20F28 (2.0/28) (20mm F2.8)
Fig.4-2-3
Center Single Area
Fig.4-2-5
Fig.4-2-6
k k k
k k
Fig.4-2-4
4-5