Thank you for your reply. I still think I'm failing to get across the problem I'm facing, I think either I'm not describing it properly or people simply aren't seeing it.

The background object is a grid which has been stretched along the z-axis to form lots of small, square tunnels. The vertical pieces of this grid are set further outwards than the horizontal pieces, this is deliberate and the effect this has on the lighting is welcomed.

The problem I'm having is in relation to the falloff of the light, the fact that the light itself is not projecting the grid image in a perfect manner. The grid image is stretching from left to right and from top to bottom in such a way as it does not fit the grid object behind it.

In this image, I have marked the problem areas in red and the area where the light interacts with the grid correctly in green. As you should be able to see, the areas towards the edges of the image show the light failing to line up with the grid object. The light should cast a thin grid over the surface of the grid object and match it in placement across the entire image. Please completely ignore Annie in this, the problem only relates to the grid light and the grid object.

What seems to be happening is that the light is projecting the image in somewhat of a spherical fashion, as opposed to projecting it straight.

Could I send someone the scene to take a look at, minus Annie, just with the grid light and grid object, please?

Thanks for your patience, folks, and apologies if I wasn't being clear enough. If I'm still not making it clear, I've no idea what else to say. :)

Glen.

I'm running Win 10 Pro 32GB RAM Intel Core i7-4790K CPU @ 4.00GHz Nvidia GeForce GTX 1660 Ti

My DA Gallery: glen85.deviantart.com/gallery

Peace, love and polygons!