What is the red eye in mobile phone photography? How to solve it?

Red-eye phenomenon occurs when mobile phones take pictures because the flash axis of the flash is too close to the optical axis of the lens, and people's pupils will be enlarged accordingly when the external light is dim. When the flash of the flashlight shines on the fundus through the pupil, the dense small blood vessels reflect bright red under the care of the light, and the image of "erythema" on the eyes is a natural phenomenon, that is, "red eye".

Solution of red eye in mobile phone photography;

1, before shooting, let the model's eyes be exposed to strong light, such as illuminating her with a flashlight of a mobile phone, which sounds funny, but as long as the model's mood is calmed down, this way will greatly weaken or even eliminate red eye. In fact, this is to make the model's pupil shrink before shooting, so as to prevent it from shrinking under strong light;

2. Some cameras have the option of "eliminating red eye". Turn on this function;

3. Shoot with constant light. Although the flash is a professional photographic equipment, it does not mean that the flash must be on the scene at all times. Then illuminate the character with constant light, and the red eye will not appear.

4, let the model wear sunglasses, if you want to show the status of the character's fashion Leng Yan at night, you can use such accessories to escape the red-eye talons perfectly, and also highlight the image of the character's atmosphere;

5. Let the flash light by changing the angle in the way of off-machine flash, and at the same time, it can be used with accessories, such as soft boxes and reflective umbrellas, to increase the light source and soften the light at the same time, which can effectively eliminate red eye.

6. If you have red eyes when shooting and have no chance to shoot again, it is natural to save the photos for later repair. There is a "red eye correction" tool in Lightroom, which can be easily removed by clicking on the red eye. In Photoshop, you can also eliminate red eye in more abundant ways, such as selecting red eye with selection tool and reducing saturation to eliminate red eye.

According to the specific types of problems, step disassembly/cause principle analysis/content expansion, etc.

The specific steps are as follows:/The main reasons for this situation are