Some questions about Nikon D60, I'd like to ask your advice!

According to your description, your lens should be D60 18-55. If the aperture is not constant and the shutter speed cannot be guaranteed, the snapshot must be empty unless the person or thing you are shooting is still, your end is stable, or on a shelf. In the case of dark light, it is a good idea to improve ISO, but the high sensitivity of D60 is not enough, and there are many high ISO noises, which will have an impact.

You use manual gear, and you should ensure normal exposure. Why use F8/ 125 exposure combination?

If you want to ensure the shutter speed in a dim environment, try to use a large aperture, and then raise the ISO to 800. It is estimated that the noise will be obvious if it is higher.

Teach you two ways:

Method 1: The mode can be prioritized by the aperture, and the aperture is set to 3.5, then the machine will automatically calculate the shutter speed, set the sensitivity to 800, and increase the exposure compensation to the maximum.

Method 2: Replace the Jiao Da aperture lens.