Ranger LED Brusher, LED Printer for photography, LED tools for Photography

"B door" means when you press the shutter, the camera starts exposure until you release the shutter. In the B door, exposure time varies depending on the length of time you press the shutter. The general shutter will automatically shut down in accordance with the set speed. The early part of the camera as well as "T gate", which is another shutter speed can be freely controlled manner, but in today's camera has been rare. And "T gate" The difference is, "B door" Throughout the course of the exposure, the shutter button is pressed always to be in a state, the shutter release will stop the exposure, while "T gate" is the first time you press the shutter at the beginning of the exposure, release the shutter exposure continues, the exposure is stopped at the second press of the shutter.

B door is both a photography mode can be said to be separated from the camera four modes (A, S, M, P) other than to be seen as an extension M profile. In the B door mode, the photographer can either adjust the aperture, shutter speed can also be completely controlled, and this so-called full control over shutter speed and M files are very different. Generally, in the M profile photographers from 1/8000 seconds to 30 seconds to freely adjust the shutter speed. The B gate is the photographer holding the shutter button the shutter opens, release the shutter button until the shutter is closed.

"B door" to solve the problem of long exposure. The camera shutter is generally the slowest in about 16-30 seconds range, which is 99% of the shooting needs are more than sufficient. And when you need to take some special scenes in low light environment, this rate may still slow enough. Xinggui such as shooting, fireworks, the night looks like a special way during the day, and so on.