What does hdr photography mean?

Hdr photography is a shooting technique.

The full name of hdr is high dynamic range, which means high dynamic range. By combining different exposure parameters into a photo, the dynamic range of the photo is expanded, and the photo effect with rich details and strong contrast is achieved. The basic principle of hdr photography is to use three or more photos with different exposure parameters, such as normal exposure, overexposure and underexposure.

These photos are then aligned, color corrected and semantically mixed by HDR composition software or applications. Get photos with wider dynamic range, richer details and stronger light and shadow effects. In computer graphics and movie cameras, it is a set of technology used to achieve a larger exposure dynamic range (that is, a greater difference between light and dark) than ordinary digital image technology.

Advantages and disadvantages of hdr mode:

First, the advantages of hdr mode:

1, a higher brightness range can show more details and shadow details.

2, richer color performance, can present more accurate and fuller colors.

3. The enhanced contrast makes the image more deep and stereoscopic.

4. Suitable for all kinds of scenes, including scenes with rich highlights and shadows.

Second, the disadvantages of hdr mode:

1 requires special equipment and technical support, including hdr photographic equipment and hdr compatible display.

2. Processing and displaying hdr images requires more computing resources and storage space.

3. In some cases, excessive use of HDR effect may lead to excessive exaggeration or distortion of images.

4. The compatibility with non-hdr devices and platforms is limited, and the expected effect may not be achieved on all devices.

The above content reference: Baidu Encyclopedia ‐HDR Photography