Originally Posted by sdurani
Not filmed in IMAX, but shown at digital IMAX (aka Lie-MAX) theatres. TRON:Legacy was shot using HD cameras. Their 2K resolution doesn't come close to what IMAX film is capable of. For a comparison, when ILM had to scan in the IMAX footage Transformers 2, they did so at 12.5K resolution.
Please keep in mind when we dealing with two different techs ,So we cant just translate numbers like that.
The higher you scan a chemical medium, the more accurate your digital copy will get, even if the actual resolution on the medium is lower.
The same thing can be said if you have digital master, the bigger the filmframe its transfered to, the more accurate your chemical copy will be.
Pixels and Dots dont play well together.
Someone posted here a test were IMAX people tested checkboard pattern on IMAX film. At 4K the checkboard had turned into grey. They couldnt detect any resolution with a 4K source. So somewere between 2K and 4K for a digital camera would be enough for an IMAX presentation.
But when we dealing with filmsources we get new numbers since we get chemical to digital to chemical process. With information loss for each generation.