Trigger time
the Trigger time (or installation time) is the length of time the sensitive surface of the device, sensor or negative is exposed to light. It can also be called "shutter speed" because it determines the shutter's action time.
Triggering a photo on a camera requires the action of a mechanism that allows light to enter for a longer or shorter period of time. This mechanism can be electronic or mechanical.
When the trigger time is long, the sensitive surface of the device is optimally exposed to light. In that case The photo may be blurred if the subject is moving. On the other hand, If the shutter speed is short, the light that reaches the sensitive surface is less important. The result will be a frozen image of a moving subject.
applying
the Trigger time must be adapted to the subject and the result desired by the photographer. A slow-moving photo of a moving subject will not be the same as a quick-laying image. When a photographer follows the movement of a subject with his lens, he must take into account that a trigger time too long will make the scenery blurry.
For a portrait, a slow trigger time could also make the subject blurry. If the shutter speed is set below 1/15s - 1/30s, a person's image may be blurred if the subject makes a less movement, even if the camera is immobilized. In order to counteract this effect, it is advisable to use the flash and synchronize it to 2Th curtain.
To sublimate a landscape, you have to use a tripod and program very long trigger times varying.
These techniques can also be applied when using a mini camera, one of the most spy camera or a hunting camera. We recommend choosing a camera with a very fast trigger time.
