You know I like to use pictures for data from time to time, right? One problem is that I don't know much about cameras. There, I said it. Really, almost all of my photos are made with my phone. That ...

I have a new iPhone. You know I am going to use this for both videos and images that can be analyzed. It's just what I do. So, before I need it I am going to measure the angular field of view for this ...

Two objects that project the same visual angle on the retina can appear to occupy very different proportions of the visual field if they are perceived to be at different distances. What happens to the ...