Earlier this week we posted a beginners guide to manual photography, demonstrating how to take control of exposure yourself, rather than letting your camera make the decisions Today we’re taking a deeper dive into ISO settings, so you’ll understand how the choice you make affects the look and quality of your images.

There are numerous reasons for buying a new camera. Maybe yours is an old clunker and a replacement is long overdue. Or perhaps you’re chasing more megapixels or want better video capabilities.

We recently featured a tutorial demonstrating how to create jaw-dropping landscape photos with Lightroom’s oft-ignored Calibration tool. That lesson got a lot of attention, and we have an equally great one for you below.