I'm new to Blender. I can see right now I don't really have the vocabulary much less any technique with it. Someone suggested that Blender might be or have a way to do something I wanted to to a couple years ago. I never pursued it at the time. To today I have another instance where it would be nice to alter an image to make it appear as if it were taken from say thirty feet to the left of a new image taken today. In this case the original picture was taken over a hundred years ago and any info on the camera and lens is long gone. However, the location of where it was taken is fairly obvious. I'd have taken one from the same spot today but trees have grown between then and now.
The other situation involved two new photos. One taken from one place to capture a view directly behind somewhere else. I'd like to show this background view behind a picture taken from in front of this other spot. The far background works out fine, but the details closer to where the photo was taken appear huge if I overlay it into this other picture taken from farther away. It seems like all the pixels sort of converge to the point where the lens was, so it would involve distorting or warping things as if they converged somewhere farther back.
I haven't got a clue how to do either, but since I first heard of Blender I recently read that all sort of customizations has been done to use if for all sorts of things with moving pictures even. So maybe there are some extensions, plugins, modules or something or at least some terminology for me to look into.