I wouldn’t say the 4K is 100% like the old blu-ray, because at least on the 4K the annoying green tinge is gone, but in other aspects it could be a lot better
It’s almost the same. There are some very subtle improvements, sure, owing to the 4K scan, but they are negligible. The colour grading is the biggest offender for me. It’s just cold and pale compared to the warmer and richer hues of the original photochemical timing. Also, the 4K is more cropped than the 35mm projection. In the projected print, you see more of the top and the right and slightly less of the left side and the bottom. The top and right portion in the of the frame is more cropped in the BD/4K which compromises the composition. The dinosaur snouts/heads get cropped out of frame in the home videos when they bellow/roar at the skies. In the 35mm projections, the heads can be clearly seen inside the frame. The BD/4K also adds extra image at the left, which affects the composition negatively in certain wide shots where the right side was needed more.