A flash is a camera accessory used to illuminate the subject being photographed when the sensor (matrix) sensitivity is insufficient. The main flash specifications that determine the flash power, speed, and quality are: 1) Guide number – the flash illumination distance set at ISO 100 on the camera. The GN is usually calculated for 100 ISO sensitivity, for example, with a GN 20 flash, the object should be photographed at a distance of 5 meters with an f/1/4 aperture. 2) Flash zoom – the device's ability to adjust the illumination area according to the camera's lens focal length. 3) TTL – a system in the flash that helps synchronize with the camera settings: aperture, ISO, exposure time, focal length. Types of flashes: built-in, built-in pop-up flash, external, macro photography, studio flashes. Low price.
A flash is a camera accessory used to illuminate the subject being photographed when the sensor (matrix) sensitivity is not sufficient. Flash zoom/zooming refers to the device's ability to adjust the light coverage based on the camera lens's focal length. TTL is a system in the flash that helps synchronize with the camera settings: aperture, ISO, exposure time, focal length.
TYPES OF FLASHES:
- Built-in
- Built-in pop-up (pop-up flash)
- External
- Macro photography
- Studio flashes
EXTERNAL FLASH - is a camera flash that is not built into the camera body. External flashes can be attached to the camera via a "Hot Shoe" or used remotely to operate away from the camera. Although many cameras have built-in flashes, attaching an external flash provides greater power and versatility.
External flashes are generally small, portable, and not part of the camera. They use batteries (usually AA type).
In professional studio equipment, flashes can be large, separate devices or studio strobe flashes powered by special batteries or connected to the electrical grid. They are synchronized with the camera using a flash synchronization cable or radio signal, or they trigger via light, meaning only one flash unit needs to be synchronized with the camera, and it, in turn, triggers the other devices, called slave devices.
HOW TO USE A FLASH?
- You can create very natural-looking shots, regardless of the surrounding lighting. You can shoot early in the morning, during the day, in the evening, in the shade, etc. Since you have a powerful light source (flash) that you can control, the quality of ambient light does not matter much. It is quite easy to eliminate ambient light by moving to a darker location, thus giving you full control over the lighting.
- You can easily create wide-angle backgrounds, for example, extremely white backgrounds that look very fresh and modern.
- You can easily create blurred backgrounds.
- You can use the flash to create stunning portrait lighting. By shooting from different angles, you can create dramatic light, soft light, rim light, and more.
