+ Aperture and the Relationship to Depth of Field
+ Lower f/stop = shorter depth of field
+ Aperture set at 4.5 f/stop
+ Aperture set at 5.6 f/stop
+ Aperture set at 7.1 f/stop
+ Higher f/stop = deeper depth of field
+ Aperture set at 9.0 f/stop
+ Aperture set at 11.0 f/stop
+ Aperture set at 14.0 f/stop
+ Aperture set at 18.0 f/stop
+ 4.5 f/stop 18.0 f/stop
+ Aperture set at 3.5 f/stop
+ Aperture set at f/stop
+ Aperture set at 5.6 f/stop
+ Aperture set at 7.1 f/stop
+ Aperture set at 9.0 f/stop
+ Aperture set at 14.0 f/stop
+ Aperture set at 18.0 f/stop
+ Aperture set at 22.0 f/stop
f/stop 3.5 f/stop
+ But why would I want blurred or non-blurred backgrounds?
+ CREATIVE CONTROL!!
+ Perhaps you want everything in focus…
+ Like this…….
+ ….or this.
+ Or perhaps you want just your main subject in focus, and other things blurred.
+ Like this…..
+ Or this….. This blurred background is also referred to as “Bokeh.”
+ So….. Low f/stop number equals short depth-of- field, which equals sharp focus on the main subject and blurred backgrounds.
+ Large f/stop number equals long depth-of- field, which equals focus on all elements in the picture frame and limited or no blurriness.