They say that one must not create oil paintings from photos of trees. This is because everything exists beautifully in the medium called light. Both color and shade are best seen under light. But a photograph, on the other hand, is a poor substitute for the actual real-life, visual experience.
Light is undeniably the greatest medium. But with the advent of digital camera and digital photography, even the smallest detail of a subject can be captured. And light can be clearly included in the photo so as to make it life-like.
Professional artists used to create paintings of trees by standing before their subject for long hours. But when rain comes or when wind blows through the branches of their subject, everything changes including their focus and concentration. With photos, branches are made still, trees are frozen, allowing the artist to capture everything in one sitting.