Making drastic changes to an image used to take a lot of know-how and time to complete. Now, with the use of LUTs and this tutorial, you can turn a daytime image into a nighttime image quickly and simply, with great effect.
I have always enjoyed some heavier Photoshop edits of images — particularly complicated composites — but I was always aware of something: they all had a "look". This was about a decade ago, mind, but every single composite or heavily edited image — whether created by me or somebody else — had this difficult to define, identifying quality about it. That is, I could always tell that the image had been heavily edited. It was a sort of blend between HDR and slightly unrealistic lighting that was a red flag on these types of images.
Now, however, that doesn't need to be the case, and with the right workflow, you can create images that are tremendously difficult to identify as composites, when done right. In this video, the Photoshop Training Channel goes through their in-app tutorial for turning a scene from day to night. While the process itself is easy to follow and execute, I would note that the base image you choose to use is crucial If the lighting is too strong, the sun too low, or the shadows too pronounced, a day-to-night transition will not look effective.
