On a side note, on of my hobbies is wildlife photography. To the average person, ” depth of field ” is something unheard of for most people. Foe example: ever notice how those sports illustrated cover shots, jump right off the page….? there is a reason for that, its called selective depth of field. where the photographer can choose a wide open lens like ( F/1.4 or f/1.8 or F/2.8 etc. ) this will blur out the background, putting emphasis on the subject.
Many people view this as a photo being out of focus, but its not.. its designed. That out of focus area is called the Bokeh. Maybe now you will see the difference now between a snapshot and a photograph….
this is the same thing as this mirror edge. Once you know its suppose to be there, you will look at knives in a different way.
here is a shot I took with my 400mm f/2.8 lens. Note the blurred background ( Bokeh )… this isolated the ( flicker ) yellow shafted Northern flicker from the rest of the photo. I took this shot from 60 meters away. I saw the flicker land on the tree, but waited 45 minutes for it to spread its wings to show off its yellow shafts ( used to attract females ) Note the woodchips suspended in air due to a very fast shutter speed. 1/2000 sec. You could never get a shot like this with your smartphone
I hope this stuff is appropriate here.. if not someone please tell me… I have 80,000 photographs stored securely on line. I have a photograph of almost anything we can discuss.
Bill aka ET