Samsung has made a few improvements to the Note 4's camera as well. Like the Galaxy S5, it comes with a 16-MP sensor, but it'll also feature Optical Image Stabilization. This eliminates blur from shaky hands while snapping photos or shooting video.
The most noticeable camera enhancement appears to be improved zooming functionality. The Note 4's camera is capable of zooming in up to eight times, compared to the Note 3's 4x zoom camera. Zooming in with the Note 4 is extremely smooth too. The camera responds instantly to pinch-to-zoom gestures, and was able to hone in on an object much more quickly than the Note 3.
Samsung also claims that the Note 4's camera takes better low light photos, and says that the front-facing camera comes with a wide angle lens for capturing a broader range.
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http://www.businessinsider.com/samsung-galaxy-note-4-photos-specs-2014-9#ixzz3CHGWb5if