Bright Sunlight
The Pixel, without doubts, was the winner here, reproducing excellent fine details in both shadows and highlights. On the flip side, the overall sharpness was slightly below the Samsung S7. The camera retained the slight warm hue of the evening, which makes the image quite pleasant to view.
The S7 produced the sharpest image (we would say, oversharpened), but details were lost in highlights and shadows.
The camera removed all cast and made the image look like a morning shot, while it was captured in the evening. The iPhone, clearly, is nowhere close to both the other competitors in sharpness or details. However, the colours were more on the neutral side, retaining some warmth, but not so much as the Pixel did. We observed some noise even though the image was captured at ISO 20.
Pixel
iPhone 7 Plus
Galaxy S7
VERDICT
As we said before, this test does not aim to suggest the best smartphone among the three. As far as the camera is concerned, the Google Pixel has, without doubts, the best camera among the three devices. The Galaxy S7 is brilliant in outdoor images and provides punchy images out of the box, though these are over-processed. We were disappointed with the iPhone images, though we expected it to give tough competition to the other two. The results are for you to see.
Pixel
iPhone 7 Plus
Galaxy S7