[JJ_SO]

I still don't know if that comparison would be better placed next to the threads for Sigma 24/1.4 A. But since I compared Nikon with Sigma lenses, I thought the Nikon forum would be the right one.

 

What I did was very unscientific. I wanted to know, how bad the "weak" corners really are. I didn't use a chart for that but a fence which had a lot backlight and some structure in it. Also a good indicator for nervous bokeh.

 

I compared those lenses:

• Sigma 24/1.4 Art
  
• Sigma 24-105/4 Art @ 24 mm
  
• Nikkor 24/1.4 G which I used a lot
  
• Nikkor 14-24/2.8 G which I also use a lot
  

Camera was D810 on a tripod. I turned it, so the top tube of the fence made a diagonal. Camera was not parallel to it to get an idea of the bokeh. I always used LiveView to focus the left corner and the center. So there's no problem with field curvature, I was just interested in the difference of sharpness  between center and left bottom corner.

 

Here's the whole picture



 

First the centers of the fast primes wide open.

Nikon 24/1.4 @ f/1.4



 

Then the Sigma 24/1.4 Art @ f/1.4



 

To me, the Sigma has a little bit more sharpness and contrast. Now let's take a look at those nasty corners.

First Nikon @ f/1.4



 

Then the Sigma @ f/1.4



 

Of course, no auto-correction of CA involved, otherwise it would be a little pointless. If it's doing alright at f/1.4, I was curious how my other 24 mm capable lenses would do.

 

First The Sigma 24/1.4 @ f/4



 

Now it's zooming colleague 24-105/4 Art (so that's wide open for that lens)



 

And least the 14-24/2.8 @ f/4



 

I don't want to bore you with all center and corner shots. Anybody interested can see for himself: 24 mm comparison gallery I know, it's not very comfortable but the EXIF-data is included and I tried to give the filenames a little bit of sense.

 

Probably I'll add some night-shots before I sell the Nikkor 24/1.4 but I don't expect dramatic surprises.