Adjust your camera settings.
You will likely need to set your camera settings differently when switching from handheld shooting to a tripod.
Turn off image stabilization since the camera won’t be moving on the tripod. Some cameras will turn off this setting automatically if it senses it is on a tripod.
Turn on mirror up. If you have a camera remote, utilize the mirror lock setting on DSLR cameras. The motion of the mirror can cause vibrations, so locking the mirror prior to taking your shot can help to stabilize your images.
Turn off Auto ISO. Take your photos from the base ISO of your camera. This will help to reduce the amount of noise and give you a dynamic quality photo. The base ISO for most cameras is between 64 and 200.

“The first thing to realize, though, is that it’s not always necessary to use the histogram. In fact, selective use is best. Few if any photographers look at the histogram for each and every photo they take. In the majority of instances, your camera’s meter will accurately and precisely set the correct exposure for the scene.
But you should check the histogram when a scene’s lighting is especially tricky; when there are areas of deep shadow and bright light in the same scene; and when you’re going to take a series of images in the same setting and want to be sure your exposure is right on target.” [Nikon]

How to Use Your Camera’s Histogram
Understanding the Histogram
Perfect Exposures from Histogram through Lightroom