

Select the Crop tool, use “Fixed Aspect Ratio”, “Custom” as crop option and enter 1058×705 as the aspect ratio. You will see grids over the image dividing image into 1058x1058px squares.

Select View->Show Grid if it has not been selected. Go to Edit->Preferences->Display and set the grid as shown. I’d prefer the 2nd method because it is very precise, however I will go through another method first as it may be more intuitive. There are two ways to do this in Capture NX2. It is easy to set the exact ratio using the custom fixed aspect ratio crop method, but NX2 doesn’t tell you the size of the crop when you start cropping. However you may find it tricky if you want to crop a region with a fixed pixel dimension, for example, you want to crop an exact 1058 pixel wide and 705 pixel high region out of a 4288 (W) by 2848 (H) image. You can do crop with fixed aspect ratio (presets or custom) or do a free crop that allows you to change the aspect ratio and size on the fly. The Crop Tool in Nikon Capture NX2 is quite usable for practical purposes.
