Assertion: digital camera's zoom | /r/HasProperty | maximum 4x
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Source sentences:
text: When using digital zoom for photo, the Undeteriorated digital zoom limit is 1.3x, 1.8x and 2.25x respectively for 10MP, 5MP and 3MP, but when using VGA, the image quality is always good under Undeteriorated digital zoom limit, because the digital zoom is only maximum 4x, while the limit is 7.2x, but some cameras with 16MP have digital zoom up to 7.2x or using the capability to the edge for VGA.