Distortion: the two generations are very alike
The two generations of the 24-120mm have a very close distortion values, but the old one isa little bit better. At 24mm, the 24-120mm f/4 shows signs of barrel distortion (by approximately 1%). Distortion then disappears around 30mm. From 35mm up to the end of the zoom range, distortion is characterized by pincushion verging towards minus 1%.
Used on an APS-C sensor, the phenomenon is once again less visible. If the graph has the same shape, it is contained between +05% and –0.3% on most of the zoom range. This time the distortion disappears at 35mm and remains almost stable from 50mm (oscillating around –0.3%).
24-120mm f/4 (orange) vs 24-120mm f/3.5-5.6 on a full frame sensor (D3x): the new zoom has a little bit more barrel distortion at short focal lengths, and a bit more pincushion distortion above 50mm.
24-120mm f/4 (orange) vs 24-120mm f/3.5-5.6 on an APS-C sensor (D300s): the two lenses behave almost identically.
Further readings for the DxOMark review for the Nikon 24-120, the new constant f/4 aperture on DxOMark.
To provide photographers with a broader perspective about mobiles, lenses and cameras, here are links to articles, reviews, and analyses of photographic equipment produced by DxOMark, renown websites, magazines or blogs.
October 24, 2010
September 24, 2010