Su Jiang's blog

ISO: It’s measurement of the sensitivity speed of light. It determined by sensitometry and measured on many kinds of numerical scales.

If the ISO number is low, the grain in the shots will finer than the high  ISO number. However, if you are shotting in the bright environment, you need low ISO number. Otherwise, you make your picture more noisy.

For instance,

The left one is taken at 100 ISO, and the right one is taken at 3200 ISO. Obviously, the quality of the left image  is much more better right one. The right one has too much grain, and it’s too noisy.

Also when you are taking photo, please give the camera some time to adjust the ISO then you can shot.

Reference list:

http://digital-photography-school.com/iso-settings

http://whiteonricecouple.com/photography-travels/iso/

  I’m Su Jiang, you also can call me John. I’m from China,and I major Film Production. It’s my second year in BG, and I went to Oklahoma City and L.A for high school.  I’m a super crazy basketball fan, and I love to play basketball.  By the way, I support LA Lakers, and hope I can find my teammates in this class haha. Also I love watching movies especially scary movies. I like listen Hip-Hop music. Eminem and Lil Wayne they are my favorite rappers.