高速 こうそく 写真 しゃしんじゃありませんでした
kōsokudosha shinja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 高速度写真

1. It was not a high-speed photograph.; It wasn't a high-speed photograph.

Past/Perfective
Negative
Polite
Terminal Form