Those of you that have been following me a while know that I set my camera to Shutter Priority when I'm on the trails and rarely use anything higher than ISO 400 unless I really have to.
For those of you asking why: On my camera, a Nikon D200, using an ISO higher than 400 creates a lot of noise, so for quality I limit myself to 400. Now, that may change if there's something I REALLY need to capture. Sasquatch making an appearance deep in the woods would be in that category. Using Shutter Priority means I can set up at 1/250 and hopefully much higher. It's my intent to shoot closer to 1/600 whenever possible, ISO and light permitting. Keep in mind, if you're set at ISO 100 in bright sunshine as a lot of our walk was, photographing something deep in the shade of a tree will probably leave you with an underexposed image. Changing your ISO from 100 to 400 gives you four times the amount of light and can save you from the dark side. Of under exposure that is.
Click on any image to enlarge.