A few techniques derived by trial-and-error, and some obvious pitfalls to avoid. May prove useful to you other amateur CRT photographers out there.
Most Apple ][ emulator screenshots out there completely misrepresent the color and resolution of that machine's composite video output. Here's how to fix that.
Another installment on CGA display tricks - covering the final version of 8088 MPH, determining the model of your CGA card in wetware, the extended 1024-color palettes supported by both models, and some artistic considerations.
Can you take the original IBM PC color graphics board, and force it to display 32 times as many colors as it's officially capable of? Believe it, comrade! Here's the in-depth write-up on how we did that in the 8088 MPH demo, complete with illustrations.
An exercise in taking "modern" graphics software and dragging it kicking and screaming back to the glorious days of clean, simple, 2 bits per pixel raster graphics. Plus a time-lapse video of the whole process.