BiF, Birds in Flight

 I read an article about 5 Common Mistakes. I took the article and wrote my comments and bulleted the 5 Mistakes with comments and included the original article.

This is a link to my PDF File.

DoF, Depth Of Field?

 We have learned that to get a shallow DoF use a large Aperture. So why does your cellphone camera with a large Aperture, say f/1.7, have a wide DoF. Basically why is everything in acceptable focus?

Why?

Use the comment area to post your answer(s)