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Scott Shama August 24th, 2010 02:09 AM

Hey James,

Would love to know where I can learn that math...calculating dof based on aperture and lens would be a great thing to know... Does your calculation take into account the sensor size? My understanding is that the same lens used at the same aperture and focal length on a t2i and 5d will yield a shallower dof on the 5d due to the 5ds enormous sensor. Is this correct?

James Donnelly August 24th, 2010 03:47 AM

Quote:

Originally Posted by Scott Shama (Post 1562037)
Hey James,

Would love to know where I can learn that math...calculating dof based on aperture and lens would be a great thing to know... Does your calculation take into account the sensor size? My understanding is that the same lens used at the same aperture and focal length on a t2i and 5d will yield a shallower dof on the 5d due to the 5ds enormous sensor. Is this correct?

Yes sensor size is part of the calculation. As you say, the bigger the sensor the shallower the DOF, other things being equal.

I don't think the maths is that hard to learn, but why bother when you can get a computer to do the work? Here are two useful online calculators that will enable you to pose as a ninja photo nerd:

Online Depth of Field Calculator

Field Of View Calculator

Scott Shama August 25th, 2010 12:11 AM

you... rule...

Ivan Gomez Villafane September 7th, 2010 11:51 AM

What do you think about getting "the three Canon low-light primes"?

I mean...

28mm 1.8
50mm 1.4
85mm 1.8

... and maybe cheat in a Tokina 11-16 for ulta wide shots.

Do you think that set would work?


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