Initial File Startup had Grey Background with Grey Gridlines in X2:Y1 Rectangular Grids.
After looking at the Edit Mode & Object Mode versions of the Grid, the Camera View had Grey Background and Yellow Gridlines in X1:Y1 Square Grids.
The Edit Mode & Object Mode images of the Grid is of Yellow Gridlines in X1:Y1 Square Grids.
The Render Image after looking at the Edit Mode & Object Mode Grid had the same Gridline Thickness Error as my first Render Image.
When I made my most recent Posting of the Render Images, the Render Images didn’t have the Gridline Thickness Error; thus, I edited in the “?What?” section.
I just made a Legal Paper & Letter Paper Printouts of the Render Image, there is no Line Thickness Error; and, no Grid Spacing Error; and, the Gridlines come out as Black Lines; and, not as White Lines.
Wait a minute…I need to check the Lamp Position. Also, the Lamp may be set at R=0,G=0,B=0 Energy=0. I typically use these Lamp Settings for the Lamp in my other Blender Project.
What I am thinking of doing is creating a Second Grid with a Different Spacing Scale and Overlaying, or Fusing, the two Grids to create Thick Lines and Thin Lines within the Grid Area.
An alternative method would be to create a Second Grid with a Different Spacing Scale and Different Transparency Settings; then, Overlaying or Fusing the two Grids.
I don’t want to get too carried away with the Transparency Thing on the Grid System; because, I am thinking that when I am Creating Objects, I will also be setting up those Objects as Transparent Objects during the Creation Process.
If you want to have the grid object completely fill the camera then you could use the following
If you want the proportions of a USA Legal size (21.6cm x 35.6cm)
Make the object dimensions the same ratio, such as X = 35.6 and Y = 21.6 (landscape)
If you select the camera and in its properties change it from a Perspective camera to a Orthographic camera and set the orthographic scale as the same as the objects X dimension (35.6), the object will fit perfectly in the camera field of view. If you increase the camera orthographic scale you will get a border