1. Smyrna5's Avatar
    Let me preface this by saying that I don't know as much about photo optics as I should. I'm just trying to puzzle this out. I welcome any alternate views/corrections, etc, as I am here to learn.

    Nokia advertises that the Lumia 1020 is "Zoom Reinvented." The photos accompanying the ads are certainly eye-popping. I think they tend to make one think this is a way to get a super zoom without all that glass. This lead me to wonder how the 1020's "zoom" compares to my Nokia 521 and to a regular camera. I know a pixel isn't always a good measurement, since the 1020's lens will create a more defined image, but here I only want to concentrate on zoom.

    The Nokia 521 will take a picture with a 2592x1936 pixel resolution. The 1020 will take a 7712x4352 pixel shot at full resolution. Since they both have about the same focal length lens, they will both put down the same size image on the imaging sensor at a given distance away from the object. Since the 1020's image has about 3 times as many pixels in a given direction, I can crop the image from the 1020 to make it about 3 times as big as a 521 image with the same resolution. Thus, the 1020 has about a 3X zoom, compared to the 521.

    Am I off-base here? Flame suit on.
    Last edited by Smyrna5; 09-21-2013 at 06:05 PM.
    09-21-2013 04:31 PM
  2. vpdjc's Avatar
    Optical = Zero

    Digital = Maybe 5x
    09-21-2013 05:12 PM
  3. PB_H's Avatar
    1020 3X digital zoom in 4:3 ~ 35mm equivalent/26mm lens= 78 mm zoom
    16:9 ~35mm equivalent, 25mm lens/ 75mm zoom

    521 4X digital zoom /4:3~35mm equivalent /28mm lens= 112mm
    09-21-2013 05:20 PM
  4. Smyrna5's Avatar
    Thanks for the responses. I guess I could have saved my self the trouble of figuring this out by simply reading the review just posted. There they give the 1020 a 3X zoom factor, as well.

    Nokia Lumia 1020 review: View from the top - GSMArena.com
    09-21-2013 08:01 PM

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