The following pictures are near-to 100% crop from shots with D800 + 16-35 F/4. Click each to magnify.
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Walking towards to “golden hornfishing-harbor-istanbul-artborghi-2
The Galata bridge and tower
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The “Bosphorus fires” at sunset
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The Ataturk bridge
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The Suleiman Mosque
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For example, the first picture of this post is cut out of the below one.

fullmosque-d800

Cropped pictures showed here are not as crispy as with a zoom (the mounted lens is the Nikon 16-35 f/4 wide-angle), but they are still better detailed than the Nokia Lumia examples you can find here . Of course I should have had both cameras at hand in the same moment… but it is clear how useless the 100% crops from Nokia are, unless light conditions are optimal like here. Pity, I thought a Nokia Lumia 1020 could have been useful when my back refuses to carry the D800.