CODEWITHSUNDEEP
androidgoogle-glass
Peter
Peter

Reputation: 11920

How to convert zoom value to magnifcation?

In my Android app, I need to convert the current zoom value of the camera to magnification. I am trying to understand what getMaxZoom() corresponds to in terms of magnification. For example, my camera has a maximum zoom value of 60. It obviously doesn't mean that the magnification is 60 times the original view. There must be a conversion that one can apply. Regards.

Upvotes: 1

Views: 175

Answers (1)

Prisoner
Prisoner

Reputation: 50721

You can think of these as the possible zoom stops that the camera can support. The actual magnification is available through getZoomRatios(), which provide a list of what magnification is available for each level in 1/100 increments.

So if getMaxZoom() returns 5, the call to getZoomRatios() might return a list with the following values:

100, 150, 200, 225, 250

meaning that zoom level 0 is magnified 1x, zoom level 1 is magnified 1.5x, zoom level 2 is magnified 2x, zoom level 3 is 2.25x, and zoom level 4 magnified 2.5x.

Upvotes: 2

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