Impressive restoration of what they claim to be unseen 65mm film. Pretty sure every 65mm piece of film has been seen. There were other restorations, but nothing this sharp. For All Mankind used Gemini footage as filler. It almost looks computer animated, but it's real. They use still photos that were definitely 70mm.
In 4k, it looks more like 35mm. The trick is 65mm in 1965 was equivalent to 35mm for still photos, since the frames were stacked vertically. Only IMAX stacked frames horizontally. The generation that lived during the IMAX film era would be disappointed by what was called 70mm in 1965.
There were 70mm movies, in those days, but it's almost unheard of for the very best cameras to be applied to a space program. Today, they're only documented by a small number of amateur photographers.