Camera comparison: LG G3 vs Samsung Galaxy S5, Galaxy Note 3, iPhone 5s, LG G2, Sony Xperia Z2, HTC One (M8)
The LG G3 has a 13MP camera, which puts it in a disadvantageous position versus the 16MP Galaxy S5 and the 20.7MP Xperia Z2. But in practice, LG's flagship stands its ground really, really well. Details in its photos are neither too sharp, nor too soft, which gives them a pleasant, natural look even at 100% zoom. What's more, well-lit scenes are very low on digital noise.
The Galaxy S5 takes sharper photos than the G3, although it is clear to see that this sharpness boost comes from the camera's software. As a result, finer details are easier to discern, but edges are rendered sharper than they look in reality. All in all, the S5 and the G3 have their own approaches towards detail preservation, and we won't say that one is better than the other at that.
Similar words can be said about the Samsung Galaxy Note 3 and the LG G2. The former's photos are sharper, while the latter takes photos with softer details. Again, we'd give the two the same score.
As for the Sony Xperia Z2, even its 8MP photos (taken in Intelligent Auto Mode) pack tons of fine detail. We're especially satisfied with its close-up scenes where every blade of grass stands out. The finest of fine detail, however, is somewhat distorted by artifacts.
The iPhone 5s is once again showing us that its 8MP camera produces excellent results. It can't quite outrun the big boys in this category, but given its native resolution, we're very pleased with the results.
And trailing behind the pack is the HTC One (M8) with its 4MP camera. Its photos are usable, but there's a noticeable lack of details in them. The M8's photos are also the ones where digital noise is easiest to spot.