angles

This might be an unusual and stupid question, and i am unsure if this is the right place to post. In a normal photo without fisheye lense, are the angles in the photograph evenly "distributed"? (in lack of better words) what i mean is, if the angle of view is 60 degrees (blue line), that means...

Since the backgrounds that I downloaded were shot from 90 degrees I learned a lesson that it's hard to place a photo on them that was shot at 45 degrees. Not impossible to change the perspective of the bg but not very easy easy well it it wasn't for me - without cropping my original photo...

Last food photo of the year. Breaded fish with vegetables and olives. I used different lighting and angle in this photo. Want to shoot more photos shooting straight down. Is possible for me but not easy. Either shooting down at food on the floor or putting my tripod on the table. Can...

My latest food photo and hopefully they are getting better. It looks a little too yellow to me and also seems to have a hint of green. I used a gray card and also have Spyder hardware which I used to calibrate my monitor. Have tried to incorporate some tips that were given me on previous...