Panasonic DG Leica Nocticron Bokeh/Vignette vs Sigma 56/1.4 vs Olympus 75/1.8
Dec 16, 2021
5
For pure fun and enjoyment and having all those lenses I have asked my wife to stand in the front of a Christmas tree and then I have taken a few shots to prove a few points
1. The lens has a lot of vignetting wide open that is true but this is gone by f/1.8
2. When you shoot at the same aperture vs other lenses it matches or is better than the other two lenses in the out of focus rendering.
Vignetting test
This compares the Nocticron at 1.2 with itself at 1.4 and 1.8. Although the camera exposure is exactly as it has to be the top crop shows increasing brightness as you go from 1.2 to 1.8 because vignetting is reduced. The bokeh balls go from ellipse to almost round
1.2 vs 1.4
1.2 vs 1.8
If vignetting is your concern you should shoot this lens at 1.4
Lens Comparison
Vs Sigma 56/1.4
Sigma vs Nocticron
When you compare with the sigma at 1.4 two things are apparent
1. The bokeh balls have the same shape
2. the Sigma have a little rim around the edge that is greenish the Nocticron has a little rim inside the edge transparent personally I like the Nocticron best
Conclusion: The Nocticron is marginally better than the Sigma and does not produce the green circles.
Vs Olympus 75/1.8

When you compare with the other Sigma..erm Olympus lens you see that:
1. The Olympus has exactly the same green circles of the sigma 56 and this is not a surprise as this is sigma design however considering the lens has no aspherical elements this may have to do with other aberrations
2. The balls of the Nocticron are practically round while the olympus show some vignetting
Conclusion: The nocticron is better than the Olympus at 1.8
So in summary to who thinks you are going to get better rendering out of the other lenses think twice your decisions have to be driven by focal length not by other factors and of course how deep is your wallet.
If you are a Nocticron owner do take into account that closing down the lens to 1.8 achieves almost complete elimination of vignetting and yet the rendering is still great. If you want to have good enough result without elliptical balls shoot at 1.4.
Shooting the lens wide open will show the ellipse shape and the edges will be considerably darker this may or not be a problem. However consider that as shown on lenstip the Olympus 45mm 1.2 is not producing round balls at 1.2 either and both lenses achieve this fully by 2.5 and give acceptable results by 1.8.