View Full Version : Lense size comparison Digital to SLR
06-23-2003, 03:16 PM
Hey all. I'm writing an online book on horse photography, and I'm having a hard time finding a comparrison chart between the magnification index for digital cameras and the lense size for film cameras. For example - 3X equals ? mm The part of the book I'm working on right now has to do with how different lense lengths will effect the shot. Any input would be greatly appreciated.
Thanks ahead of time - JO:notworthy
06-23-2003, 10:08 PM
The ?X is usually equal to magnification of the human eye.
With traditional 35mm lens, a 55 mm is equal to the magnification of what the eye sees. This is due to the relationship of the aperature and the film size.
Since the CCD (the device used to collect the light) in the digital camera is much smaller than a film camera then all the lenses and their focal lengths are smaller too. A digital camera with a 6-15mm lens and an average size CCD has the same range as a 35mm camera with a 28-72mm zoom lens. NOTE the sizes of CCDs used in cameras are not all the same.
Conventional 35mm film camera //// Typical digital camera Range
<20mm //// < 4.3mm Very Wide angle
21-35mm //// 4.5-7.5mm Wide angle
50mm //// 10.7mm Normal
70-200mm //// 15-43mm Telephoto
Hope this helps. :cool:
06-24-2003, 01:56 PM
Hey - Thanks for the response!:D
OK, if I'm reading you right, a 1X setting on the digital lense woudl be roughly comperable to a 50mm lense on a 35mm film camera. Which makes sense as the horses shoot about the same at this setting as they do with the 50mm. Now here's the question, I have a Fuji FinePix 3800 with a 1X - 6X optical zoom. So that would make it comperable to a 35mm filma camera's zoom lens of 50mm - 300mm? The lense says it's 36mm - the one on the digicam. And the camera's specs say that the lense is the equivalent of a 38mm - 228mm on a 35mm camera.
I want to have a good outline of this in my book. The first chapter is on perspective and lenses, which are two of the most important factors in determining whether you have a stretched out giraffe or a nice quarterhorse or what ever in the pic.:lol
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