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EXIF Angle of View
Would anyone happen to know how to calculate the angle of view based on the information given in EXIF tags?..

Comments (6)

Isovist wrote:.

Would anyone happen to know how to calculate the angle of view basedon the information given in EXIF tags?.

The information from the exif is the actual focal length. You may also find the 35mm equivalent focal length..

Given the focal length and sensor size, it is simple geometry and a little trig. to calculate the angle of view.If trigonometry is too difficult, then try this:http://www.tamroneurope.com/flc.htm.

By moving the slider at the bottom of the chart, the focal length can be adjusted. The angle of view is displayed in degrees too..

Using the chart, you need to choose the 35mm or cropped sensor Digital setting. This will not give the correct results for compact cameras with a smaller sensor size, unless you always use the 35mm equivalent focal length rather than the actual focal length.Hope this helps,Peter..

Comment #1

The Angular Field of View calculator on this page (http://www.tawbaware.com/maxlyons/calc.htm#mosaic_calculator) is easy to use for any combination of focal length and sensor crop factor, and it gives you the results for the horizontal, vertical, and diagonal field of view..

Davehttp://www.pbase.com/dsjtecserv..

Comment #2

If you want to do the calculations yourself, you'll find formulas on this page:.

Http://en.wikipedia.org/wiki/Angle_of_view.

You'd just need to know the sensor dimensions and you could use the focal length from the EXIF..

Here is a nice DOF calculator that also calculates Angle of View. It's got a drop down list of popular camera models..

Http://www.stegmann.dk/mikkel/barnack/.

JimChttp://www.pbase.com/jcockfield..

Comment #3

Thanks a lot,.

Apologies before hand if it comes across as a silly question..

I can see the Focal Length in the EXIF tags..

But how do I calculate the sensor size? Are there any tags that can be used to calculate the sensor size. If so, which are they? Also, what is the alternative if these tags are missing?..

Comment #4

Isovist wrote:.

Thanks a lot,.

Apologies before hand if it comes across as a silly question..

I can see the Focal Length in the EXIF tags..

But how do I calculate the sensor size? Are there any tags that canbe used to calculate the sensor size. If so, which are they? Also,what is the alternative if these tags are missing?.

The sensor size won't be in the EXIF simply because it never changes. You may find it in the camera specifications, but it would be simpler to tell us exactly which camera you have. Then someone on this forum will surely be able to give the answer.Regards,Peter..

Comment #5

I am actually trying to build a script that calculates the angle of view from the information given in EXIF tags produced by any camera. Hence, the rather broad manner of the query..

Thanks very much for all your help...

Comment #6

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This question was taken from a support group/message board and re-posted here so others can learn from it.

 

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