How big should I be able to make my photos?

[Vtec44]

as far as digital med format camera, your wrong about it being geared for low iso only, Karl Taylor did a shoot in low light situation, to print at 6 meters tall, so wrong again.. Yes Hasselbald is best used for the high quality and can shoot a 50 ISO, but doesn't mean you can't go to higher iso, in fact can do higher iso better then full frame, because the sensor is larger..
And i'm not going to show you any video, besides doesn't matter what any one says with you, seems your opinion has little to do with reality..

I could post dozens of videos from professional well know photography instructors, yet you would still believe what you believe and stick with your own opinion, what ever..
you have this insane idea that you know what your talking about yet i proved you wrong, maybe it some sort of tension or embarrassment for you, idk, either way i could care less.
the facts remain true, when you turn up your iso at 1600 above even with full frame camera's you start to lose quality, and color & tones.. it's a fact!!!! and if you tell people that is not true, your lying to them and misguiding them to false information, period.....

I feel bad laughing at this post. I really do.

Still waiting for you reference where I said 64,000 ISO. LOL