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Sensor Size, Crop Factor and Focal Length

PostPosted: Thu Oct 17, 2013 2:59 am
by Avidil Ryeson
Enjoy!

Horizontal Measurements
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Diagonal Measurements
Image

Re: Sensor Size, Crop Factor and Focal Length

PostPosted: Thu Oct 17, 2013 3:34 am
by Eli B. Michaud
Really helpful thanks. But on the 40mm of the BMPCC it says 15.36mm when it should be 115.2mm right? otherwise great job.

Re: Sensor Size, Crop Factor and Focal Length

PostPosted: Thu Oct 17, 2013 3:38 am
by Avidil Ryeson
MaulKentor wrote:Really helpful thanks. But on the 40mm of the BMPCC it says 15.36mm when it should be 115.2mm right? otherwise great job.

my mistake )
fixed it.

Re: Sensor Size, Crop Factor and Focal Length

PostPosted: Thu Oct 17, 2013 7:31 am
by christiangruner
These are diagonal measurements, right?

Re: Sensor Size, Crop Factor and Focal Length

PostPosted: Thu Oct 17, 2013 7:51 am
by Avidil Ryeson

Re: Sensor Size, Crop Factor and Focal Length

PostPosted: Thu Oct 17, 2013 8:19 am
by christiangruner
Ryeson wrote:
christiangruner wrote:These are diagonal measurements, right?


http://www.seriouscompacts.com/showthread.php?t=11338
http://www.dpreview.com/forums/post/42147887



So "Yes" ;)

I find that using the the diagonals when comparing 3:4/3:2 sensors with 16:9 sensors are not really exact.

Instead one should primarily concentrate on the horizontal FOV when talking about 16:9 sensors. That makes a lot more sense in the real world.

Re: Sensor Size, Crop Factor and Focal Length

PostPosted: Thu Oct 17, 2013 9:05 am
by Avidil Ryeson
christiangruner wrote:
Ryeson wrote:
christiangruner wrote:These are diagonal measurements, right?


http://www.seriouscompacts.com/showthread.php?t=11338
http://www.dpreview.com/forums/post/42147887



So "Yes" ;)

I find that using the the diagonals when comparing 3:4/3:2 sensors with 16:9 sensors are not really exact.

Instead one should primarily concentrate on the horizontal FOV when talking about 16:9 sensors. That makes a lot more sense in the real world.


Just updated.