Starting at f/2.8, the Nikon 50mm f/1.4G is darker than the 50mm f/1.8G. Matching the brightness at f/5.6, all 50/1.4G images were given 0.28 stops more exposure compensation during RAW processing to compensate. The color balance was not adjusted, with both sets of images processed at 5000°K +0 tint.
There are some very small differences in distortion. The 50/1.4G has just a bit more barrel distortion into the corners than the 50/1.8G.
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