1957年出生於香港。

世傑自八十年代初開始在導師吳漢霖先生和張景熊先生的指導下開始他的攝影計畫； 1985年，他們策劃了他的第一場聯展「Sensitive . Transitive」。
1989年至1990年間，他曾到英國、法國旅行，部分攝影作品被巴黎法國國家圖書館收藏。
回港後，「攝影冒險家工作坊」改名為「The Workshop」。 1993年至1999年，參與香港藝術發展局贊助的《The Workshop》發行的十一期非定期視覺文化刊物的編輯。
三年後，他與朋友在香港石硤尾賽馬會創意藝術中心成立了Out-Focus Group。
2012年和2020年，吳出版了他的第二本和第三本專著《發現風景》和《回到起點》。至今，其作品曾在香港、澳門、平遙、東京、多倫多、巴黎等地展出，部分作品為香港文化博物館收藏。

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Born in Hong Kong in 1957. ​​

Sai Kit started his photography projects since the early 80s under the  mentors Mr. Honlam NG and Mr. K.H.CHEUNG; they curated his first group show "Sensitive . Transitive" at 1985. At the same period,  he set up a photography workshop "The Photoventurers Workshop" with others.

Between 1989 to 1990, he travelled to U.K. and France and some of his photographic works were collected by the Bibliotheque Nationale of France in Paris.

The "Photoventurers Workshop" was reformed as "The Workshop" after his returned to Hong Kong. From 1993 to 1999, he took part in the editorial of eleven issues of non-periodical visual culture publications issued by "The Workshop" with the sponsorship from the Hong Kong Arts Development Council.

Three years later, he set up the Out-Focus Group with friends at the Jockey Club Creative Arts Centre in Shek Kip Mei, Hong Kong.

At 2012 and 2020, NG published his second and third monograph "found  landscape" and "Back to the Starting Point" . Until now, his works have been exhibited in Hong Kong, Macau, PingYao, Tokyo, Toronto and Paris, and some of the works were collected by the Hong Kong Heritage Museum.