I have no quams with adjusting aspects of a scene that I want to photograph. In fact, I will generally (unless I forget to bring it) take a small waistpack with me that I have made up for nature walks with the camera.

The kit includes...

One small brush for removing dirt and debris from a subject.
Small scissors for trimming whatever.
Tweezers for manipulating small delicate objects.
Several pieces of string for tying back larger things that might get in the way without harming them.
Three 1 oz. specimen cups for saving things (generally insects) I might want to bring back to the studio.
A small white reflector for for adding fill light to shadow areas.
Kleenex for a variety of things that might come up during a long walk.

Of couse if one is shooting a large vista this is not really important, but I find this kit indespensible for close up work.