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View Full Version : I need help with math! XP



morisato
07-29-2007, 06:08 PM
I have a 35mm adapter and some lenses. I was wondering if there's a mathmatical equation to find out what the HVX+lens equivalent field of view is on a 35mm camera. I know that the field of view is dependent on the ratio between the lens and chip, so that a 50mm lens on a HVX is not equivalent to a 50mm lens on a 35mm camera, right?

I know that the the HVX is 1/3" which is about 8.4mm and a 35mm camera is... well... 35mm. What I dont know is how to figure out what lens I would need to put on my HVX to match the same field of view as a 50mm on a 35mm camera. If the ratio were to stay the same, that would mean I would need a 12mm lens on my HVX... that doesnt sound right. Please help!

Beat Takeshi
07-29-2007, 08:44 PM
Just use this formula and you will get it right every time.


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smithy
07-29-2007, 10:10 PM
LOL...I know that with the manual AI nikon lenses it is 1.5 times more on a digital camera. IE a 50mm reads as a 75mm lens on a digital camera. so on the HVX it could be something similar. You might try a 35mm lense and see if that simulates 50mm.

TimurCivan
07-29-2007, 11:53 PM
in the HVX book i think theres a chart.

scharky
07-31-2007, 03:22 PM
a 35mm focal plane has roughly 7x the field of view of that of a 1/3" ccd.
so at 4.5mm on the HVX the field of view is roughly equivalent to a 32mm focal length on a 35mm camera (I am guessing you are talking about a 35mm still camera frame).