Will the photos I took with Nikon D90 be gray? How to adjust it? Do you want to adjust the camera or the photo?

Insufficient exposure ... unclear is the focus problem and stability problem! Focus on the bottle and keep it steady. ...

You can adjust exposure value to+1/3 or+1/2.

That's the key behind the shutter, and the one closest to the shutter on the right is the exposure compensation key! There is a box with+/-in it, hold it down! At the same time, turn the thumbwheel on the back of the fuselage and turn right, and the cursor in the viewfinder will move! Just move in a positive direction! !

It can be used in a P. S file!