Camera comparison: Sony Xperia Z2 vs Samsung Galaxy S5, LG G2, HTC One (M8), iPhone 5s
Well, what do you know: the Sony Xperia Z2 has almost no troubles shooting with weak, artificial lighting in indoor environments. Colors are mostly natural, details are plentiful, and digital noise is well within tolerable limits. Its LED light is strong and does not disrupt the image's color balance.
The Samsung Galaxy S5 performs equally well in well-lit scenes, and in darker ones, it proves that it can produce slightly more detailed shots than the Z2. There's more digital noise in these low-light scenes, however, and the S5's LED light makes photos appear colder.
The boost in brightness and warmth is, again, noticeable in photos from the iPhone 5s – they look fine like that, but a bit unnatural. In harder low-light scenes, however, Apple's smartphone takes beautiful photos, with plenty of details and pretty colors.
Indoor photos from the LG G2 look good only as long as there's a good amount of light available. As lights get dim, the presence of digital noise becomes apparent and details also suffer because of that. The G2 has a strong LED light that won't throw color fidelity out the window. It won't fire, however, unless light is really scarce. That's why you might need to force it to fire on certain occasions.
The HTC One M8 takes decent photos in well-lit indoor spaces, but it struggles in low light. In the latter scenario, its photos turn out quite unpleasant-looking, with colors that are way off. Details are of average quality, as expected. Yet we can't deny that the M8's two-tone LED light improves dark scenes dramatically.