Image Capture
If you want your camera to capture high-quality images, you must follow some basic application rules. These rules can be applied to network cameras, image servers, digital cameras, and digital still cameras.
Users should also note that the screen display settings of the computer used to view images are very important. The computer's color settings should always be set to at least 65,000 colors, and keep in mind that while flat LED displays are convenient, CRT monitors generally provide better image quality.
Here are some tips on how to get high-quality images:
Use Plenty of Light
In most cases, poor image quality is due to low light levels. Generally, the stronger the light, the higher the image quality. In insufficient light, the image will become dull in color and blurry. Professional photographers often use strong camera flashes.
Light levels are usually measured in Lux. Bright sunlight has an illuminance of approximately 100,000 Lux, daylight has about 10,000 Lux, typical office lighting is about 500 Lux, and a dimly lit room at night is around 100 Lux. The light level used to capture high-resolution images should generally be at least 200 Lux.
High-resolution cameras can work at light levels below 1 Lux. This means that it is possible to capture images at 1 Lux, but it does not mean that good image quality will be achieved at that level. Different manufacturers use different parameters to represent light sensitivity, so it is difficult to compare camera quality without considering the actual captured images.
Low light causes dull and blurry images
Avoid Backlighting
Usually, the camera's dynamic adjustment ability is limited. Users should avoid bright areas in the image as much as possible. Bright images will cause overexposure (bright white), and objects will appear too dark. Users often encounter this problem when trying to capture subjects in front of windows.
Avoid bright areas in the image. Adjust the camera position to avoid backlighting as much as possible.
Reduce Contrast
Users can adjust the camera's exposure to achieve a better average light level. A person standing in front of a white wall will appear too dark. However, if standing in front of a gray wall, this problem does not exist.
Avoid shooting small black objects against a white background, as this will cause the white background to turn gray and the object to appear too dark. Shooting against a darker background will display the object's detailed features and colors. The example shows images of the same object shot against white or black backgrounds.
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