- What are F-stop and T-stop?
- Format-Equivalent Depth of Field and F-Stop. <=== implications for video too!
- Depth of Field at the Periphery
These subjects are challenging to discuss in uncomplicated ways (avoiding jargon and too-involved technical aspects), but I’ve made a stab at it, with an intention to add some demonstrative real-world field examples in addition to recent examples like Depth of Field with Real Lenses.