the following picture isn’t painted nor made by Photoshop or other photo editing software , but it was captured by regular digital camera that lasts 10.9 sec to produce this shot
we were talked about this technique in our previous topic (long exposure photography ) , but in this topic we will talk in details about how it works?
- it’s difference from the regular photography that it uses (longer shutter speed) , to answer this question , we must know little concepts in photo logy :
Exposure: it’s the amount of light that reaches to the photography medium , like (film in classic cameras , or sensor in digital camera) , the amount of light that reaches to the sensor depends on shutter size that exists in front of the lenses .
it’s like the window that passes the light , this window opens in capturing process permitting the light to pass through the lenses to the sensor , but the more important factor than shutter size is : the time that the shutter will still opens which called (shutter speed) , so the name is little misleading as what we talking about is time not speed! ….. to illustrate this lecture let’s take an Example:
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