Depth of Field Tutorial

By John Honovich, Published Oct 19, 2012, 12:00am EDT (Info+)

Ignore depth of field concerns for 95%+ of surveillance applications, despite what you hear. While this is a common consideration in digital photography, its goals and logistics differ. In this note, we explain the drivers, why it is generally not a surveillance concern and the exceptional application where it is plus what can be done.

Photographers Often Prefer Shallow Fields of View

************* ***** **** ** ********* * particular ******* ** *** ***** ** view ***** *********** ******** *** *** background. ** ** ****, **** ****** the ***** ** *****. **** * look ** *** ***** *****. * photographer ***** **** ****** ****** *** one ** *** ***** ** **** were ********** *** *********:

photog depth

*******, ** ************, ** ** *** opposite. *** ****** ****** **** * very **** ***** ** ***** ** that *** ** *** **** ******* that ***** ***** ********* *** ***** investigations.

Drivers ** **** ***** ** *****

*** ****** * ******* ** ** the ***** ** *** *** *** shallower *** ***** ** ***** **** be. **** *** ****** ****** ******* the ******* ** ********** ***** ***** to *** ****** ** * **** lens ****. ****'* ** ******* **** a******* ************ *** ******* ** **** *****:

close to camera

****** ** * ****, ***** ** field ** **** *** ** * foot, ** ** **** ******.

***, ****'* ** ******* ***** *** subject ** *** ********** **** ** **** *** *** subject ** *** ***** ** *** FoV:

far but tight

In ************, *** * ****** *****

**%+ ** **** ***** ************ ******** of:

  • **** ***** ***** (*.*., * - 8mm)
  • **** ******** * ** **** **** away **** *** ******

******* ** ****, ******* ***** ** field ** ****** *** * ****** field *******. ****** ** ****** *** FoV ** ***** ********** **** ** little ** ** **** *** *** cause *** ******** ** *** *****.

Calculate *** ********

***** ** ***** **** *** ** calculated **************. **** ** * ********* ** ***** ********** ** *********.

***** ** * ***** * ****** video ******* *** *** ******* *** the ********** ** ******:

The ************ *********

*** **** ******, ****** ***** ********** exception, ** **** * ************ ****** uses * **** **** ** ******* far **** *** ******. ***** ** an ******* ******* **** * *** foot *******.

fuzzy far

** ********* *** ******* ***** ** field *****, ******** ****-**** ** ****** *** **** *******.

*******, *** ********* ********** **** ** be ***:

  • *** * ****** **** **** ** close **** *** **** *** **** it ***** *****. ** **** **** lens *** ************* ****** *** **** opening ******** ***** ** ***** ********.
  • ****** **** *** **** **** ** light **/* ** ******** *** **** images. ******* **** *** **** **** create ******** ***** ******* **** **** moderate *** *****.

*** ** ***, ** *** ***** about ***** ** ***** *** ** you **** * **** **** ***** it ** ** *****, ***** ********* about *** ********* *** ****** ********.

Test **** *********

**** **** * ******** **** ***

Login to read this IPVM report.
Why do I need to log in?
IPVM conducts reporting, tutorials and software funded by subscriber's payments enabling us to offer the most independent, accurate and in-depth information.
Loading Related Reports