Hello, photographer, I'm Nikon SLR d80. Excuse me, master, are there any fixed formulas for various parameters in aperture priority (M) mode, such as

If you are a novice, it is not recommended to use M (manual gear). It is more convenient to use a (aperture priority). There is no fixed pattern for reference. Generally speaking, you can set the aperture value according to the lighting conditions or the subject. Generally, take close-ups of local areas, adjust the aperture to the maximum, and if you need to take a big scene, turn it down a little; When the indoor light is bad, set the aperture value to the maximum. When shooting moving objects, use the S file (shutter priority). Generally, shoot children or actions, and try to set it to 1/250 seconds or more to ensure that it does not paste. If the speed is extremely fast, such as a dripping bird, it takes about11000 seconds. In these two modes, other parameters will be automatically adjusted to achieve the best imaging effect. If the photo is found to be dark or bright, adjust the exposure compensation (add or subtract files) or adjust the ISO (especially indoors, if it is too dark, it is necessary to raise the ISO value. I will take it as D80 first, generally within 800, and the imaging is OK).