DoF, Depth of Field

Previously I wrote on DoF and wanted to follow up. So I asked Bard for help.  

Basically what many don't tell you is that there are 4 major factors that influence DoF. 

• Aperture
• Focal Length
• Distance between camera, subject and background
• Sensor size

Read the links above for detail and use DoF Simulator setting your camera and lens to get an idea of your DoF