whats equivalent focal length

13 years 7 months ago #1341 by heretotherefoto
I am looking to find out about equivalent focal length. Can anyone tell me about it or direct me to a good tutorial?


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13 years 3 months ago #17552 by Baydream
Many digitals cameras have sensors that are smaller than 35mm. That means that the lens acts like a longer lens. For Canon non-full frames the factor is 1.6 (100mm lens acts like a 160mm). For Nikon, it is 1.5x.
Point and shoots with long zooms obviously do not have 600mm lenses. They use magic (indistinguishable from technology) to make the image look like it's a long lens. The "equivalent" focal length means it has the same results as on a film camera (50mm = same size, less = wide angle, more = telephoto).

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