(4) Nikkor 18-55mm F3.5-5.6G DX, at 55mm F20.
I conducted this test because I wanted to find out which lens will give me 'stars' when taking night time shots. As it turned out, both of my DX lens (i.e. 18-55 and 18-70) couldn't do it.
From the four images above, Nikkor 50mm and 70-300 gave better 'star' performance. Whereas both Nikkor 18-55 and 18-70 performed poorly.
Nikkor 50mm F1.8 produced the kind of 'star' that I wanted exactly.
Manfred Lai