... laptop. Phil posted: 25 Nov 2020 14:39 from: Phil O Martin, I have checked the pictures on the laptop and the images are more or less the same, perhaps it may be that the map area covered by the Lower image is larger than the one above it. Phil. posted: 25 Nov 2020 18:00 from: Martin Wynne Thanks Phil. That's the problem, the different effects are going to vary widely on different screens. Here's another idea, reducing to 2-tone greys: 2_251251_350000000.png Top left is original 256 tile reduced to 2-tone. Bottom left is Triangle interpolation from 256 to 768. Bottom right is Triangle interpolation from 256 to 768, followed by reduction to 2-tone. I think that might work quite well as a design guide. The template is in bright-night colours. In the end I'm probably going to have to do a full dialog with all these optional adjustments. But I was hoping to find a default setting which would give good results for most users in most ...