When to Increase the ISO Number

The sun was nearly set on a cloudy, breezy evening along the Gulf coast of Florida. I wanted to stop the motion of the waves on the choppy water so I needed at least a medium shutter speed. I also wanted sufficient focus from the foreground rocks to the farthest skyline, so I needed at least a medium aperture.

Pass-A-Grille Jetty, St. Petersburg, Florida
1/40 second, f/8, ISO 12,800

In order to get enough light into the camera with these other requirements, I needed to raise the ISO as high as it would go. While the high ISO setting did produce noise, I was able to reduce it using Lightroom Classic's noise reduction sliders in the Detail panel of the Develop module.

You can learn when to change the ISO, shutter speed and aperture to get the photo you want in Getting to Know Your Digital SLR Camera class that meets Saturday, September 28, 2019, in Missoula, Montana. Click here to register.