Are you referring to the Gus Gus animation cel that ykarus1974 posted? Cel auction photos typically look that bright for a couple of reasons; the auctioneer usually wants to put the cel’s color density on full display and give potential bidders the best idea of the frame’s overall condition. Hence, they jack up the light over the artwork to an appropriate level. Also, and I can’t stress this next part enough, animation cels designed for Technicolor photography and photochemical processing, by themselves, rarely reflect how they actually look in the final film— especially those taken under questionable lighting conditions to make a sale. You’ll notice, for example, that Gus’ nose and shoes are a darker shade in the HDR grading than the cel photo.
Now, whether or not that shot was meant to look so conservatively lit in the original color timing is up for debate. Still, in the case of that auction photo (as well as the others shown), it’s brighter to leave little to the imagination of potential buyers, not necessarily because that’s how that scene was meant to look. Hope this helps.
Oh I didn’t think in motion it would look exactly like the animation cels just your caps even though are brighter are missing color the cels have. I was just saying does the uhd blu ray get close to as bright look wise because the uhd still looks too dim not expecting it to look as bright as the cels just a balance.