だけ
koredake

Adverb
no-Adjective

1. to this extent; to this degree; this much; this little

Usually Written in Kana
おな にじを、これだけたくさんの ひと撮影 さつえうしたものを たことがありません。
onaji nijio koredake takusanno hitoga satsuē shita monō mita kotoga arimasen.
I've never seen as many people as this photograph the same rainbow.
Other forms: