سرعة المغلاق .. كتاب فن التصوير الفوتوغرافي

Shutter speed:

The speeds in all modern cameras are the same and they range between speeds

Camera type: following

One second - half a second - quarter of a second - 1/8 of a second - 1/15 - 1/30 - 1/60 - 1/15 - 1/250 - 1/500 - 1/1000 - 1/2000 In addition to these signs, there is usually a B sign, which means bulb, and this name dates back to the early days of photography when the rubber bellows were used to complete the shutter and are used these days for exposures above one second, as follows: Put the speed indicator on the letter B and press your index finger gently on the shutter button and keep it pressed Whatever you want, the shutter will remain open as long as your hand is pressing the shutter button. 19 In some cameras, you will find the letter T written on the shutter speed indicator in addition to the previous signs. The letter stands for the word Time, i.e. time, and it does the same thing as B, except that the shutter remains open even if you remove your hand from the shutter button, and its closure requires another press on the shutter button.

Later on, how to make the most of the B stance, but we will provide some preliminary information about making this stance. The usual thing is that a faster shutter speed freezes faster movement. For example, if the shutter was opened and closed at 1/100th, then a man running quickly would freeze his movement enough to appear clearly in the picture, because by 1/100th of a second he would not have changed his position significantly. But this is not. Take all active motion pictures at the 1/100th stop because this would not be a wise measure. For example, the level of light may not be sufficient, and in this case it is better to use a slower pause in order to allow no more. From the light to get to the film we will explain that means

It is fast, and at times you may want the movement to appear in a way that is not completely frozen to give more inspiration to the active movement, when you want to suggest the movement of a train. For example. It's best to put the speed dial to a stop fast enough to freeze the train but slow enough to see the wheels blur completely from what. Express train. Slow speeds also have their troubles. When you shoot for less than a second, you will notice that the pictures looked a little blurry, and the reason is that it suggests a 1/30 movement.

That is until your hands are not steady enough to stabilize the camera while shooting at such slow speeds. Therefore, when shooting at speeds slower than 1/30 of a second, you must install the camera on a solid edge (a three-legged pillar - the edge of a stone wall - the edge of a car ...).