Read Sony DSLR-A100 / DSLR-A100H / DSLR-A100K / DSLR-A100W (serv.man3) Service Manual online
6-56
DSLR-A100_ADJ
3-3.
SCREEN DUST
1. Measure Equipment: Photoshop
2. Capture Condition:
Light source
Luminance Box
Illumination
EV10
Lens
AE master lens
Capture Distance
Stick a lenz to a luminance box.
Exposure Mode
A mode (f8)
WB
Preset A light source (Tungsten)
Focus
∞ position
Image Size
L: 10M
Compression Mode
Fine
3. How to measure:
1). Stick to a luminance box and capture, and open in PC.
2). with 33.3% magnification, select Image > Color compensation > Level compensation in Photoshop, set the Input level to 32 1 233
2). with 33.3% magnification, select Image > Color compensation > Level compensation in Photoshop, set the Input level to 32 1 233
to confirm whether any stains can be seen on the screen.
4. Quality Regulations:
When stain is admitted, follows the following judgment standards, when setting Iput level of level Conpensation (select Image > Color
compensation > level compensation in Photoshop to 32 1 233.
compensation > level compensation in Photoshop to 32 1 233.
When you measure L* stain and its peripheral, L* ratio must be 1.3% or less.
L* ratio = (L* around stain bristletail - L* at stain bristletail position)/ L* around stain bristletail
L* ratio = (L* around stain bristletail - L* at stain bristletail position)/ L* around stain bristletail
× 100 <= 1.3
5. Do the cleaning on the CCD, when users point out the dust on the CCD.
* It is easy to find the dust on screen by using “Auto Levels” of Adobe Photoshop.
This command is located in the “Adjustment” sub-menu in the “Image” menu.
This command is located in the “Adjustment” sub-menu in the “Image” menu.
Click on the first or last page to see other DSLR-A100 / DSLR-A100H / DSLR-A100K / DSLR-A100W (serv.man3) service manuals if exist.