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With a digital camera, some things go different as we were used to with the film camera. The autofocus function, will try to prevent you from taking a picture when not focused.
With a digital camera, every picture should be ok. Than means, as soon as the camera "thinks" not enough light or not in focus, it won't release the shutter. Even when not in automatic, the camera wants to make sure it is in focus and has enough light. So try again when you have enough light. Then press the shutter release button half, till the camera is ready focusing and then press complete. If the camera still strikes perhaps it needs a repair centre?
Make sure you did place the camera in automatic, to exclude other possibilities that can cause "out of focus" or "wrong light"
The camera has to do a lot of work between the time you press the shutter release button and it takes a picture. It has to determine what the subject is and acquire focus, meter the light to set the exposure, and reconfiguring itself internally from displaying the image on the screen to saving it into memory. More sophisticated (and larger and heavier and more expensive) DSLRs alleviate the problem by throwing more hardware at it.
You can reduce the shutter lag by anticipating the action. Press the shutter release button halfway to make the camera focus and meter. Then, when the action peaks, press the shutter release button the rest of the way to take the picture.
This is a common situation with many compact point&shoot cameras. The camera has to do a lot of work between the time you press the shutter release button and it takes the picture; set the focus, meter the light and set the exposure, switch from showing the real-time image on the LCD to capturing and storing a single image, and more. Larger, heavier, and more expensive DSLRs have additional hardware to reduce this "shutter lag" to nothing, compact cameras don't.
There is something you can do to reduce the time, however. If you know where the action is going to happen (a kid getting ready to blow out the candles on a cake, for example), press the shutter release button halfway to focus and meter. Hold the button there until the action happens, then press it the rest of the way. This lets the camera get most of the work done before taking the picture.
Most compact digital cameras exhibit some degree of "shutter lag." When you press the shutter release button, the camera must acquire focus, meter the light to set the proper exposure, and switch the sensor from viewing to recording before it can take the picture. One of the things you get when you pay for a more sophisticated camera is a reduction in this lag.
One way to reduce this lag is to anticipate the action. Press the shutter release button halfway to let the camera focus and meter, then wait for the right moment to press the button the rest of the way.
This is a common situation with most compact point&shoot cameras. This "shutter lag" is because the camera has to do so much work when you press the shutter release button: focus on the subject, meter the light for proper exposure, and switch the electronics from viewing on the LCD to recording to memory. Larger (and more expensive) cameras have additional hardware to reduce this lag.
You can reduce the lag somewhat by anticipating the action. Press the shutter release button halfway to focus and meter. Keep it pressed halfway until the right moment, then press it the rest of the way to take the picture.
No. The shutter lag is due to the camera needing to focus and meter the light. The size of the memory card makes no difference to the speed. A faster memory card might let you take another picture quicker, but the difference would only be a small fraction of a second.
Shutter lag is simply a fact of life for most point&shoot cameras. You can reduce it somewhat by anticipating the action, pressing the shutter release button halfway to focus and meter, then pressing the button the rest of the way when the action peaks.
That's about par for a moving subject. After you press the shutter button, the camera has to focus, meter the exposure, estimate the color balance, and more. You can reduce the so-called "shutter lag" by anticipating the action, pressing the shutter button halfway to focus and meter, then pressing the button the rest of the way when the action peaks.
One of the myriad advantages of higher-end (and higher-cost) cameras is the speed with which they respond.
if you see no reation of the pressing of the button i.e. no focusing, no error message nothing , then most probably a simplest problem , the shutter release button may not be working for few reasons :
1) defective switch.
2) defective flex cable.
3) camera exposed to some physical jerk or dropping resulting into disalingment between inner switch and the shutter release button.