2 sentences

1. 他给相机换了一个广角镜头。

   tā gěi xiàng​jī huàn le yī gè guǎng​jiǎo jìng​tóu.

   He changed the camera's lens to a wide-angle one.

   Source: Dong Chinese Dictionary

2. 广角镜头的视角比普通镜头要大得多。

   guǎng​jiǎo jìng​tóu de shì​jiǎo bǐ pǔ​tōng jìng​tóu yào dà de duō.

   A wide-angle lens has a much larger field of view than a regular lens.

   Source: Dong Chinese Dictionary