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ASI485 Manual
6
4. QE Graph & Read Noise
QE and Read noise are the most important parts to measure the performance of a camera.
Higher QE and Lower read noise are needed to improve the SNR of an image.
The following figure shows the QE curve of ASI485. According to our estimation, the QE peak of
ASI485 is 85% (530nm).
Read noise includes pixel diode noise, circuit noise and ADC quantization error noise. The lower
the better.
As you can see, the Read Noise of the ASI485 camera is extremely low. The built-in HCG mode
can even more reduce the read noise at high gain and keep the same wide dynamic range for this
camera as at low gain. When the gain is 80, the HCG mode will be automatically turned on.
Additionally, the read noise is as low as 1.5e while the dynamic range can still be close to 11bit.
Depending on your target, you can set the gain lower for higher dynamic range or set the gain
higher for lower noise.
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