>>280521602
>>280538486
The older ones are usually transliterations of Japanese Jargon or glosses.
>ポストカードメモリーズ
"Postcard Memories" or just "a Dezaki" in English is what the man himself wanted to call it, the cuts/transitions to paintings.
>ハーモニーセル
"Harmony Cel" Pic related. It's not just a painting. The vast majority of "dezakis" are really this, the cel line art is taped directly to the painting and photographed.
>ハイライトセル
"Highlight Cel" Top layer cel with specular highlights, in OP's webm the bars of light
>透過光の裏打ち
"transmitted light underlayment" which is usually glossed simply to "underlight" (I see digital era nips just shorten this to 透過光 "transmitted light" but I don't think it was so abbreviated back when it was in use in the analog era) the sea in OP's webm, where they stick a light or a sheet of retroreflective material behind a painting with holes cut into it, so it shines through. It's also fundamentally
>多重露光
"Multiple Exposure" where the bright light of the underlight precludes shooting this in a single exposure (it would just wash out and all look white), so it's shot with mattes. If that means nothing to you and you want a good pictorial anime example there's this:
https://www.tumblr.com/futonolog/95638163333/anime-optical-test