Learn how aperture, shutter speed, and ISO work together to control exposure. Aperture creates depth of field for portraits or sharp landscapes. Shutter speed freezes action or adds motion blur. ISO brightens images but adds noise at higher values.
And aperture for the feeling you want to portray in the image, like a nice soft blurred-out background like in portraits, or everything is in focus from the subject to the background like in a landscape photo. And after you have your aperture and your shutter set, and then adjust your ISO for the brightness. Higher the ISO, the brighter the image, but be cautious of noise. Noise tends to be in the darkest part of your images. Remember, mastering your camera takes practice, but it's incredibly rewarding. And don't be afraid to experiment with different settings.
