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The lens in the smartphone camera usually has a focal length of 25 to 28mm which in the realm of photography is known as a wide-angle lens, which is why the object looks smaller than it actually is. And we are often tempted to pinch to zoom when shooting with it. Avoid this, because zooming digitally like this as you do cropping photos on the computer, the resolution of the photo so down and cut. The more powerful we zoom, the greater the degradation of photo resolution.