"Cydrome Leader" wrote in message ...
Ian Field wrote:

Speaking of optics - I remember a PC monitor with a slightly
concave faceplate, that was a pretty substantial slab of glass,
the things weighed a bloody ton!

Was it possibly one of those Zenith flat CRTs that really did look
concave? They were really weird looking, powered on or off.

Zernith made a 14" CRT for computer monitors with a flat face, anticipating
Sony by about a decade. (The phosphors were laid down without the mask. The
tolerances were so tight, that any mask would work with any faceplate, simply
be dropping it into place.) Someone at work had one, and it did, indeed, look
odd.

Sony compensated for that optical illusion with a faintly bulging screen. I
have one of the 400-series WEGAs in my bedroom (it's been going strong since
2000), and you can see the bulge if you stand the screen and look downward.