There is a issue with digital and wide dynamic range of luminance. I seen this as well not only in daytime but at night time where the target was too dark because a porch light was on at the side but the target was shielded from that light source. The IR lights were too dim to compete with the porch light. So I had to turn that light off.
Here is info on human's range of dark to light. I doubt any small electronic displays can match this range, even if we use the lowest est of 10 stops.
AI Overview View attachment 583729 The human visual system possesses a remarkably wide luminance dynamic range, capable of perceiving a vast spectrum of light intensities, from the dimmest starlight to the brightest sunlight. While the eye can adapt to different lighting conditions, at any given moment, it operates within a much smaller
f-stop range, effectively shifting its sensitivity to match the prevailing light levels.
Here's a breakdown:
- Overall Range:
Human vision can perceive a luminance range of roughly 14 log units, or about 46.5 f-stops, according to ScienceDirect.com.
- Instantaneous Range:
At any given moment, the eye can only perceive a smaller subset of this range, typically around 10 to 20 stops, according to wolfcrow.
Above was my answer below is that from AI
A
digital scope (such as a digital riflescope or digital imaging system) cannot match the
dynamic range of an
optical scope due to fundamental limitations in
sensor technology and
display systems. Here's why:
What Is Dynamic Range?
Dynamic range refers to the ratio between the
brightest and darkest parts of an image that a system can capture or display. In optics, it's the ability to see detail in both shadows and highlights simultaneously.
Optical Scope Advantages
- Analog Light Transmission: Optical scopes transmit light directly through lenses to your eye, preserving the full intensity and contrast of the scene.
- Human Eye Adaptation: Your eye can adapt dynamically to lighting conditions, perceiving a much wider range of brightness than most sensors.
- No Quantization: Optical scopes don’t digitize the image, so there's no loss due to bit-depth or sampling.
Digital Scope Limitations
- Sensor Constraints:
- Digital scopes rely on CMOS or CCD sensors, which have limited dynamic range—typically 60–80 dB.
- Bright areas can saturate, and dark areas may be noisy or clipped.
- High dynamic range sensors exist, but they’re expensive and still fall short of analog optics.
- Bit Depth:
- Most digital scopes use 8-bit or 10-bit image processing, meaning they can represent only 256 to 1024 levels of brightness.
- This quantization limits subtle gradations in light intensity.
- Display Technology:
- LCD or OLED screens have limited contrast ratios and brightness levels.
- Even if the sensor captures more detail, the display may not be able to show it.
- Image Processing:
- Digital scopes often apply auto-exposure, contrast enhancement, or gamma correction, which can compress dynamic range or obscure fine detail.
Summary
Feature | Optical Scope | Digital Scope |
---|
Light Transmission | Direct, full-spectrum | Sensor-limited |
Dynamic Range | Extremely high (eye-limited) | Limited by sensor and display |
Adaptability | Eye adapts naturally | Fixed exposure/gain |
Image Fidelity | Pure analog | Digitized, processed |
So while digital scopes offer features like night vision, rangefinding, and recording, they
sacrifice dynamic range compared to the raw clarity and contrast of optical scopes.