Understanding the concept of ISO for Beginner Photographer

Understanding the concept of ISO for Beginner Photographer

Photography. By definition of ISO is a measure of the camera sensor sensitivity of light. The higher the ISO setting, the more sensitive we terhada light sensor. To get a clear picture of our ISO setting on the camera (ASA in the case of photographic film), think about a bee community.

•  An ISO image is a worker bee. If my camera set at ISO 100, it means I have 100 worker bees.
•  And if my camera set at ISO 200 means I have 200 worker bees.

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The task of each worker bees are picking up light that enters through the camera lens and make images. If we use the lens aperture identical and equally we set at f / 3.5, but I set the ISO at 200 while only 100 (think again about the worker bees), then the image has who will be faster finished? Sense-ISO-photography Outline:

• When we add the ISO setting from 100 to 200 (the aperture is always constant - we lock the aperture at f / 3.5 or via the mode Aperture Priority - A or Av), we shorten the time required in making a photograph on the camera sensor we get half ( 2 times faster), shutter speed of 1/125 to 1/250 sec.
• When we add more ISO to 400, we cut back to half again making pictures: 1/500 sec.
• Whenever esksposur shorten the time as much as half, we call raise esksposur by 1 stop.
• You can try this sense in the case of the aperture, we try to set shutter speed remains constant at 1/125 (or Shutter Priority mode through - S or Tv), and change-change your ISO setting in multiples of 2; missal from 100 to 200 to 400 ... etc., take a look at changes in the amount of your aperture.