So avoid red eyes on the photos!

"The flash" in the camera is a key tool in photography, but difficult to regulate, not only for enthusiasts, "even professionals are afraid of flash," said Udo Kramer, a member of the group. German Association of Photography.

Sometimes the image is dark although the flash is used, only the person in the foreground appears in the picture and the background is dark. "It's physics," says Kramer. "The light changes according to the square of the distance." This means that whenever the target is far away, the flash must be powerful. So, if the distance is doubled towards the target, the flash must be 4 times more powerful.

The built-in flash of the camera is usually not powerful enough. This can be compensated somewhat by using a wide lens aperture and a higher sensitivity to "ISO" light.

"ISO increases flash range," says Kramer. However, in cheap cameras, increasing the ISO can cause confusion in the picture. "When you take a portrait picture, you can find a light backlight when you use it with the flash."

Another problem badociated with "flash" photography is red eyes. It is caused by the reflection of the "flash" in the spacious pupil of the student. What is useful in this case is to take several pictures using the "flash" which makes the pupil smaller in size because it illuminates.

"Except for exceptional situations, avoid the built-in flash with the camera and buy a good flash instead," said photo specialist Andreas Yordan of Photogravure magazine.
Not only is it more powerful, but it also allows the photographer to adjust the flash in an indirect direction, such as a correction of the ceiling level.

"The result is a brighter, better light and even falling shadows can be avoided," says Yordan.

The images used in the flash can also be improved by setting the ISO value – baduming the phone has this feature.

HDR imaging can also be useful because this technique captures multiple images and integrates them into a single image. "HDR technology illuminates the dark areas of the photo without falsifying them with excessive light," said photographer Alexander Emunds.