Looking at the D5100 user's manual, it doesn't look like your D5100 has an option to change the spacing of the grid lines.Why would the grid on my Nikon d5100 be 4X4 and not 3X3?
Looking at the D5100 user's manual, it doesn't look like your D5100 has an option to change the spacing of the grid lines.Why would the grid on my Nikon d5100 be 4X4 and not 3X3?
Just use the focus point layout in the viewfinder as your ROT guide.