EL-2800M-PMCL / EL-2800C-PMCL
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Before adjustment After adjustment
Fig.40 Color shading correction concept drawing
Note: Under the following conditions, the shading correction circuit may not work properly.
1.
If there is some area in the image with a video level less than 70%
2.
If part of the image or the entire image is saturated
3.
If the highest video level in the image is less than 300LSB (at 10-bit output)
8.6. Blemish compensation
The EL-2800M-PMCL and EL-2800C-PMCL have a blemish compensation circuit. This function
compensates blemishes on the CCD sensor (typically pixels with extremely high response or
extremely low response). This applies to both monochrome and color versions. Pixels that
fulfill the blemish criteria can be compensated by adjacent pixels in both columns and, in
the case of the EL-2800C-PMCL, the defective pixels can be compensated by the same Bayer
color pixels in both adjacent columns. The number of pixels that can be compensated is up
to 64 pixels per tap, for a total of 256 pixels.
Fig. 41 Blemish compensation
Note: If defective pixels are found consecutively in the horizontal direction, the blemish
compensation circuit does not work.
B/W
Color
Blemish Compensation Principle
Defective Pixel