ネガ (nega) means “negative” | MotiTan Japanese Dictionary

More examples

このネガから焼き付けた写真は、色がきれいです。ko no ne ga ka ra ya ki tsu ke ta sha shin wa iro ga ki re i de su

The photo printed from this negative has beautiful colors.

Shows a photographic image with light and dark areas reversed, allowing a normal positive image to be made.

ネガを見るne ga o mi ru
look at the negative
ネガを現像するne ga o gen zō su ru
develop the negative
ネガから写真を焼き付けるne ga ka ra sha shin o ya ki tsu ke ru
make a print from the negative

陰画inga: A technical term for a photographic image with reversed light and dark areas.

写真の明暗を反転させたフィルムや画像。sha shin no mei an o han ten sa se ta fi ru mu ya ga zō

The Japanese loanword ネガフィルム (negafirumu, "negative film") comes from English negative film and is shortened to ネガ (nega).

In English, negative commonly means unfavorable or showing disagreement, while the photographic sense is expressed by negative film or photographic negative.