Photo 101 by Nicole’s Classes: ISO

Well, you probably saw this coming after the last two posts.  It’s time for the third corner of the exposure triangle: ISO.  As part of the homework for Nicole’s Photo 101 class, I was tasked with photographing something in natural light at ISO 100 and again at ISO 400 or greater to illustrate the difference in grain in the images.

ISO 100

f/6.3, 1/60 sec, ISO 100

ISO 800

f/6.3, 1/500 sec, ISO 800

The second half of the assignment was to photograph the subject indoors by setting the desired f-stop and shutter speed before adjusting the ISO to achieve proper exposure.

ISO 1600

f/3.2, 1/60 sec, ISO 1600

Grain is right, huh?  Also, I forgot to white balance that last pic, but — spoiler alert — that’s part of week two’s homework.