Here is a situational guide to balancing blur and ISO.
You can fix noise. You cannot fix blur.
ISO measures how sensitive your camera's sensor is to the light passing through the lens. blur iso
Your LCD might make noise look terrible, but your computer will reveal it’s fine. Here is a situational guide to balancing blur and ISO
In very bright sunlight, if you want a wide-open aperture (like f/1.8) to get a blurry background, your camera might let in too much light. blur iso