Quote:
Originally Posted by ra1024
Does 2K/4K relate to the number of lines of scanned resolution or something else? If it's resolution, it doesn't seem like that would produce better encodes for BR since the resolution of 1080 is already lower than 2k.
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Generally, when people talk about 2K and 4K (with the capital "K") they are referring to the digital cinema standards.
2K = 1080 x 2048
4K = 2160 x 4096
Note that this aspect ratio fits none of the film standards exactly. (Deci has correctly pointed out on several occasions the current and historic standards). Therefore, to do the wider films there are neither of the full 1080 or 2160 lines in the transfer, and to do the narrower films typical of the 1930s and earlier the transfer has neither the full 2048 or 4096.
Still, even Ben Hur (at 1:2.76 IIRC) gives 1486 lines in a 4K remastering which is better than anyone ever saw in the theatre, and better than the current 1080p can possibly reproduce. (Also, as Deci has pointed out the best anyone sees in the theatre, under optimum conditions, is about 900 lines.)