>>4066551Tips I go by and someone will call me retarded.ISO above 6400 is going to look like shit and, light permitting, I would avoid anything above 3200 honestly. If you're going to do any post processing in lightroom or w/e, a low ISO image can still be usable since you can lighten it up and keep the sharpness that a low ISO number will give you. A higher ISO number will give noise and you're fucked at any chances of making it look good. Auto ISO is OK if you don't want to mess with it as long as your camera lets you set a "cap" that you don't want to go above. Lowest possible ISO while still getting the shutter speed I want is important. I don't do much action shots so this is usually no big deal to get both. Indoor sports, you're fucked cause you need a fast shutter so the target is not blurred so you live with the noise a higher ISO will cause.
wrt to aperture, are you focusing on things at a reasonable distance? 5 - 10 ft? Focusing on almost anything close to you with a 1.8 aperture should show the background / foreground as a blur. Keep raising the number and it'll appear less blurry but you will lose light which means you'll have to trade off shutter speed or ISO to keep the exposure the same.
Shutter speed...you can get away with as fast as you want if you have all the light you'd want and you're at minimum ISO, like if youre outside. Otherwise, you need to set it based on whether your target is moving or not. Take a shot, is your target blurred? Make it faster. Exposure now too dark and you don't want to do post processing? Then raise ISO if you're not wanting to adjust aperture since you're happy with bokeh. If I'm just out and about taking a lot of shots, I set it to Aperture Priority since I want to control blur/bokeh and adjust iso/shutter as needed.
Another thing, your distance from the object will also affect how much of your image is in focus in combination with your aperture value. Play with this calculator.
https://www.dofmaster.com/dofjs.html 