[nogridbag]

Sorry my comment was not clear - I'm not the author of the linked article, but it's a good primer on the issue (even though I believe some of the solutions are out of date).

I also rendered pixels using rectangles and lines using my own routines. If I recall correctly, the editor worked fine when zoomed in 4x-8x. The problem was rendering the image 1:1 or 2:1. The rendered image looked a bit blurry compared to Graphics Gale and grafx2 (the two pixel editors I was using for inspiration).