At the time of this article the E-mount Sigma 56mm f/1.4 DC DN Lens retails for $479 US, but it’s currently on sale for $429 US.
The Sony A6400 is a APS-C sensor equipped 1.5x crop factor camera, so the effective focal length of the 56mm Sigma lens works out to 84mm when compared to the full frame 35mm format standard of measurement. This focal range is ideal for portraits and many other things as you will see in the real world sample photos below.
For these real world sample photos I was shooting in mostly raw quality, but the first dozen or so were taken in jpeg mode. The raw files I did play with a little in Lightroom including a mild contrast curve adjustment and a little tweaking with the exposure on a few images. Nothing crazy though.
As you can see from these Sigma 56mm f/1.4 DC DN lens real world sample photos, the lens performs absolutely awesome I would say. As I mentioned in the Lab Testing Photos Here >>, the lens does suffer from some distortion, but in the real world it’s pretty much a non issue unless shooting horizontal and/or vertical lines fairly close-up. I will include some samples of that in the full review which I’m still working on.