วันจันทร์ที่ 30 พฤศจิกายน พ.ศ. 2552

Understanding Shutter Delay in Digital Cameras

When making use of a digital camera for action photos, you'll find that there is a delay between pressing the shutter button to the time the camera actually takes the photo. In most cases, this delay is small enough and not noticeable but when taking action photos if you try, an event that's just happened, or if you try to capture a moving object, this delay in the photo that nearly missed the action will be recorded. In this article, you will be betterunderstand what causes the shutter delay and how to overcome them.

A shutter lag is the time gap between pressing the shutter button, the camera actually captured the photo defined. There is no shutter lag in camera, as in these cameras the shutter button is useful for the shutter speed yourself and you hold the camera results in a photo instantly connected. With digital cameras connected to the trigger, is an integrated micro --Computer and hold down the shutter button initiates a series of events aimed at collecting a photo.

When the shutter button the camera goes through a series of setup events to all its electronics ready. Only when these processes are completed, the camera can capture the photo. How long does it take to these events can vary the camera to complete, but is usually around one second or so. If the subsequent photos there is an additional delayas a result of the camera compresses the photo and write it to the slow flash memory.

Although a circa one second delay does not seem long, it can mean the difference between capturing an image campaign to make the photo, it is missing. Some cameras will also initiate a focus process when the shutter button is pressed and only the photo when the focus is completed. These can be even more delay.

Although it is impossible to remove the shutter lag is on your cameracan help some procedures, the avoidance of the results. For example, many cameras burst mode. In burst mode, the camera shoots a fast series of photos as long as the shutter button is pressed or until the camera's memory is full. In this mode, the camera writes the images in a temporary memory, which is very fast but small. When the trigger is released or when the memory is full, the camera begins the slow process of writing the photos to the flashMemory.

With the burst mode, you can shoot fast photos of an action event and then select those that best captured the events. The speed and quantity of images that the burst mode supports vary between cameras. Some high-end cameras can be as much as ten photos over the course of one second.

A further delay, which is due to the digital camera technology, the initial delay. Most cameras will enter into a standby mode when not used for a certain period.This time can vary, but it's usually in the few minutes range. When the camera into standby mode turns off most of its electronics in order to save power. Usually pressing the shutter button, the camera will restart, but such a process is again long and can take several seconds. The result is a longer delay when taking a photo after the camera was idle for some time. To avoid this, make sure that your camera is turned on and do that wouldnot in the standby mode when action photos. Some cameras allow you to disable the automatic standby feature through a menu option. If it does not allow it, you can keep pressing the shutter button halfway down now and then. The disadvantage of leaving the camera all the time wasted battery power. To maximize battery life in such scenarios you can use the camera "s clear LCD screen, which consumes a lot of energy and the use ofViewfinder instead.

Another way to minimize the shutter lag, it is the automatic focus process which usually starts when the shutter button is held down to avoid. One way to do this in order to keep the shutter button is pressed halfway. In most cameras focus on the result of a one-off process and then a focus lock. The camera will remain in focus and when the shutter is fully pressed take a photo without re-focusing. Another option is to put the camera in manualconcentrate.

It takes some practice to get to know your camera and a sense of delays, it will get. Although there is no way to completely get rid of the delays can be overcome by practicing meet you in action photos. New high-end professional cameras have a very short delay and the electronics improve cameras will eliminate entirely the shutter lag to.



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