Practicing instrumental music involves some physical training, and in the case of the violin, a certain amount of maintenance of strength and limberness in many groups of muscles and tendons. However, the most important part of it is mental, the continued development of control over what the body does, the "internalization" of things that begin as awareness and conscious decisions, but become automatic, ready to be utilized in the pursuit of musical art.
So, does that sound like something that would apply to wielding a camera? To some degree, it does, perhaps in two ways. First is the practice of physical control over the device, knowing how to set things a certain way without stopping to think, and knowing where the controls are well enough to make many adjustments without looking away from the subject.
Second is in the practice of seeing things with imagination and clarity. This is something that we can develop by using our eyes and our minds in the study of art, whether paintings in a museum, sculpture in a park, architecture in a city, or the natural beauty of a tree (or a bird, a person, etc.!) - essentially, trying to see more in what surrounds us.
Obviously, one can practice seeing under many circumstances while technically engaged in another job or activity. However, for me it is really helpful to actually have a camera in my hands at least a few times a week, if not every day. Sometimes the available time is truly minimal, like yesterday, when I glanced at a clock and decided I could spare maybe ten minutes to play with the last of the autumn leaves in the yard. Checking the image exif that night, I found a span of 8 minutes from the first photo to the last. Not much practice, but when I was done, I felt refreshed, confident again that I was keeping myself sharp. I even like a few of the shots that resulted.
Ziva watched the whole thing from inside.