Hi!
I made this picture and noticed some strange near the front left wheel. Interesting focus.
(http://www.little3d.org.ua/files/12_lego8296-2.jpg)
I made some test renderings.
(http://www.little3d.org.ua/files/Focus_0.jpg)
Is this focus correct?
(http://www.little3d.org.ua/files/Focus_1.jpg)
This is my camera settings.
(http://www.little3d.org.ua/files/Focus_2.jpg)
The focus in KeyShot depends on the distance to the object from the camera. This will be an ellipse if projected onto a flat plane as in your case. If you have a small focal length then you will be able to see the curvature of the region in focus. If you want to get closer to having a focus plane then you can increase your focal length. You can also use the perspective slider and readjust the focus point.
Thanks for reply. I understand you very well.
This focus has given me some really interesting results.
Good luck!