circles of confustion

[VEEELCHOP]

 

Is it possible to calculate the focus range of a video lens given aperture, focal length and CCD size? If so, can someone direct me to a formula or website that might do the calculation? :blink:

[Chris Keth]

 

Is it possible to calculate the focus range of a video lens given aperture, focal length and CCD size?  If so, can someone direct me to a formula or website that might do the calculation? :blink:

<{POST_SNAPBACK}>

 

The lens isn't marked for focus distance?

[Glenn Hanns]

 

Is it possible to calculate the focus range of a video lens given aperture, focal length and CCD size?  If so, can someone direct me to a formula or website that might do the calculation? :blink:

<{POST_SNAPBACK}>

 

try: DOF

[David Mullen ASC]

By "focus range" do you mean from minimum (MOD) to infinity? Or do you mean depth of field? Yes, there are depth of field formulas but most people would use a calculator program or look it up in a chart.

[cineshooter]

The ASC guide has the calculations for many lenses in it as well as the formula (if I'm not mistaken) there is also an ASC giude for video now. Mr mullen might know more about this than I do....My (old and pretty well beaten up) ASC guide contains Depth of field charts as well as field of view charts, and other very usefull information for a mathematical moron such as myself.

 

JD

www.cineshooter.com