Believe it or not, if something looks cheesy, it’s mostly intentional (or, at least, it’s not our fault - shitty directors are shitty directors whether or not they’re using VFX).įor major productions, we passed the point where technology was a major hurdle in the late 2000’s. There’s quite a bit of thought and artistry which goes into all this. We also do this in reverse: to match a CG element to a set, we have to undistort the plate, track the element in, composite the shot, and then redistort everything. Similarly, we know exactly what type of lens is used in each shot, and have models which render CG elements to match. The technique is pretty well established - there are a limited number of film stocks/digital sensors used in professional production, and the grain can be modeled. Grain matching is done by adding grain to the CG elements to match the plate. I wonder if this is another reason why CGI stuck out more in the 90's? There's also CGI in almost every scene in the movie so I'm just wondering how do they get the CGI to emulate the focus drop off and unique qualities of the out-of-focus parts of the image so that it matched that very unique lens that Snyder used? Do they make like a digital model of the lens in the software they use so that it matches the real thing, or do they have to do it all by hand? Or a little bit of both? And does him using that kind of a lens make the VFX guys work that much harder to do?Īnd, along those same lines, back when movies were shot on film, how would they get the CGI to match the film grain? Because they'd be literally printing the CGI over the scanned imageright which would cover any grain but only on the parts of the image that the CGI is covering, so the rest of the frame there would still be film grain but not on the CGI model itself. For that movie he used some lenses that produce really unique images that are full of distortions and very shallow focus and unique bokeh. If the footage that was previously shot has changing quality of focus, lens artifacts, digital sensor noise and (to a lesser extent these days I think) film grain, how do they get the CGI to match all of those qualities?įor example I was watching Zack Snyder's ARMY OF THE DEAD. AFAIK in most cases CGI is something that is literally overlayed on top of footage that was previously shot.
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