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-   -   Focal Length Comparison (https://www.dvinfo.net/forum/open-dv-discussion/70566-focal-length-comparison.html)

Hornady Setiawan June 30th, 2006 12:07 AM

Focal Length Comparison
 
Found this from somewhere in the net...

Focal Length Comparison

(1/3).....(1/2).....(2/3)......S16mm.....35mm.....Angle of View

2.2.........3.1........4...........5.7...........12...........95°
2.5.........3.5.......4.5..........6.............13...........89°
2.8.........3.9........5............7.............14...........82°
3...........4.25......5.5..........8.............16...........77°
4.3..........6........7.8..........11............22...........59°
6.8.........9.5.....12.3.........17.5..........35...........41°
9.7........13.6.....17.6.........25............50..........28°
16.5.......23........30...........40............85..........18°
19.3.......27........35...........50...........100.........15°
39.........54.5......70..........100..........200..........7°
45.........63.5......82..........120..........240..........6°
86.........121......156.........200..........400.........3.25°
172........242.....312.........400..........800.........1.75°
maybe usefull for some of us...

Bill Pryor June 30th, 2006 12:21 PM

Excellent--thanks for that.

Greg Boston June 30th, 2006 12:54 PM

Yes I meant to add a thank you when I moved his thread from the XDCAM forum. I felt it was good for all camera users to see.

-gb-

Boyd Ostroff June 30th, 2006 02:27 PM

That is a cool chart - thanks for posting it. However I think the 35mm number is based on 35mm movie cameras. That's fine, but the numbers published in most prosumer camcorder specs compare the lenses to 35mm still camera equivalents, so caveat emptor. For exaple, the telephoto end of the zoom on my Z1 is 54mm which Sony says is equivalent to a 390mm lens for on a 35mm SLR. However that chart shows an 86mm lens with 1/3" chips being equivalent to a 400mm lens for a 35mm camera.

Hornady Setiawan July 1st, 2006 09:51 PM

yep, those numbers are 35mm film lens, not 35mm photography lens...

Duane Burleson July 2nd, 2006 12:36 PM

That's a very useful chart, just too bad it doesn't include 1/4"

Duane


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