[Svartalfiar]

Macs have INTEL graphics. . . and Macbook Pros have an additional graphics card as well.

Yes, and Windows laptops with intel graphics have the same problem sometimes too. My laptop only does 1366x768 when VGA is extended. Stupid.

I repeat, Apple Macs have been used professionally in VIDEO PRODUCTION for years in 4:3 and 16:9 output at all kinds of resolutions to various makes of monitors. . .

I am aware of that I WORK IN VIDEO PRODUCTION. Just today I had a presenter running bootcamp on his Mac, and 720 popped right up. I have had some laptops that allow for 720, but most don't. You're basing Mac's abilities entirely off of your experience with them. I have different experiences where 720 is not an available resolution. Why, I don't know. Maybe your expertise could offer some suggestions to help figure it out, instead of immediately branding me an incompetent and ignorant anti-Apple troll.

but only you seem to be unable to figure out how to do it!

Maybe I don't know. Preferences>Display>Uncheck 'mirror displays'>Gather windows>Scaled display>select resolution. So what, pray tell, am I doing wrong?

[Swordmaker]

Maybe I don't know. Preferences>Display>Uncheck 'mirror displays'>Gather windows>Scaled display>select resolution. So what, pray tell, am I doing wrong?

OK. My apologies. However, I don't know what is wrong. I use Macs and have supported them for years on many different types of multisynch monitors. . . and have never had it not show that as an option on a monitor that's capable of the resolution. There was a time when Multisync monitors were the exception rather than the rule they are today. Check the refresh rate you are sending the signal at. Some resolutions just don't work right at certain refresh rates on some monitors. Some multisyncs work fine at every refresh rate from 50 to 90 Hz. . . and others are so finicky they get a black screen on everything except a very few resolutions they like. Sometimes, some resolutions will not show up on the Apple display requestor at some refresh rates that are non-standard. See if that helps.