如果你是攝影新手，想影出高質素的照片，一定要學識控制相機的「曝光三角」。「曝光三角」就是光圈、ISO及快門，是一張相片的主要元素。但究竟怎樣控制光圈、ISO、快門呢？以下就為大家簡單介紹一下啦！
光圈、ISO、快門可以用眼睛作比喻，光圈類比瞳孔的大小，ISO就是眼對光的敏感度，而快門就是眨眼的速度。
1. 光圈
光圈越大可以讓更多的光進入，相反光圈越小進光量就越少。光圈以f/數值來表示，當數值越大，光圈就越小；而數值越小，光圈就越大。光圈的大小主要影響景深與曝光，大光圈就可以做到前清後濛的效果。
2. ISO
ISO就是感光度，當ISO越高，鏡頭對光就越敏感，相片就會越光。但要留意如果把ISO調較的太高，相片會出現雜訊。一般情況使用ISO 1600或以下就可以。
3. 快門
快門速度主要控制一張相的曝光時間，快門速度以I/焦距計算，焦距數值越大，快門速度就越快。而快門速度越慢，相片的進光量就會越多，適合低光環境拍攝或者Light Painting，同時手震情況亦容易出現，因此較建議使用腳架拍攝。另一方面，高速快門就可以捕捉一瞬間的畫面，如運動、落葉、水花、車子移動的畫面。
Array
(
[0] => stdClass Object
(
[title] => 獨家專訪「齊齊研究六合彩」創辦人強哥！聰明投注策略增中獎機率 強哥：中六合彩需要頭腦
[articleId] => 20063641
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20063641/%E7%8D%A8%E5%AE%B6%E5%B0%88%E8%A8%AA-%E9%BD%8A%E9%BD%8A%E7%A0%94%E7%A9%B6%E5%85%AD%E5%90%88%E5%BD%A9-%E5%89%B5%E8%BE%A6%E4%BA%BA%E5%BC%B7%E5%93%A5-%E8%81%B0%E6%98%8E%E6%8A%95%E6%B3%A8%E7%AD%96%E7%95%A5%E5%A2%9E%E4%B8%AD%E7%8D%8E%E6%A9%9F%E7%8E%87-%E5%BC%B7%E5%93%A5-%E4%B8%AD%E5%85%AD%E5%90%88%E5%BD%A9%E9%9C%80%E8%A6%81%E9%A0%AD%E8%85%A6
)
[1] => stdClass Object
(
[title] => 3次家訪無人被收樓？港女爆粗大鬧房署稱「我唔係監犯」！惹網友熱議： 河馬間屋又唔收？
[articleId] => 20064191
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20064191/%E6%AC%A1%E5%AE%B6%E8%A8%AA%E7%84%A1%E4%BA%BA%E8%A2%AB%E6%94%B6%E6%A8%93-%E6%B8%AF%E5%A5%B3%E7%88%86%E7%B2%97%E5%A4%A7%E9%AC%A7%E6%88%BF%E7%BD%B2%E7%A8%B1-%E6%88%91%E5%94%94%E4%BF%82%E7%9B%A3%E7%8A%AF-%E6%83%B9%E7%B6%B2%E5%8F%8B%E7%86%B1%E8%AD%B0-%E6%B2%B3%E9%A6%AC%E9%96%93%E5%B1%8B%E5%8F%88%E5%94%94%E6%94%B6
)
[2] => stdClass Object
(
[title] => 的士司機大爆行內辛酸史！每日搵千零兩千蚊？網民︰真係唔知的士咁好搵
[articleId] => 20064049
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20064049/%E7%9A%84%E5%A3%AB%E5%8F%B8%E6%A9%9F%E5%A4%A7%E7%88%86%E8%A1%8C%E5%85%A7%E8%BE%9B%E9%85%B8%E5%8F%B2-%E6%AF%8F%E6%97%A5%E6%90%B5%E5%8D%83%E9%9B%B6%E5%85%A9%E5%8D%83%E8%9A%8A-%E7%B6%B2%E6%B0%91-%E7%9C%9F%E4%BF%82%E5%94%94%E7%9F%A5%E7%9A%84%E5%A3%AB%E5%92%81%E5%A5%BD%E6%90%B5
)
[3] => stdClass Object
(
[title] => 5層樓港女慘成負資產 每餐食千蚊呻好慘？真實身份曝光！被踢爆做過飯局妹 做1行為即收$XX萬
[articleId] => 20064190
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20064190/%E5%B1%A4%E6%A8%93%E6%B8%AF%E5%A5%B3%E6%85%98%E6%88%90%E8%B2%A0%E8%B3%87%E7%94%A2-%E6%AF%8F%E9%A4%90%E9%A3%9F%E5%8D%83%E8%9A%8A%E5%91%BB%E5%A5%BD%E6%85%98-%E7%9C%9F%E5%AF%A6%E8%BA%AB%E4%BB%BD%E6%9B%9D%E5%85%89-%E8%A2%AB%E8%B8%A2%E7%88%86%E5%81%9A%E9%81%8E%E9%A3%AF%E5%B1%80%E5%A6%B9-%E5%81%9A-%E8%A1%8C%E7%82%BA%E5%8D%B3%E6%94%B6-xx%E8%90%AC
)
[4] => stdClass Object
(
[title] => IKEA推瑞典肉丸鑰匙扣獲讚好可愛！香港小編1句KO網民
[articleId] => 20064171
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20064171/ikea%E6%8E%A8%E7%91%9E%E5%85%B8%E8%82%89%E4%B8%B8%E9%91%B0%E5%8C%99%E6%89%A3-%E7%8D%B2%E8%AE%9A%E5%A5%BD%E5%8F%AF%E6%84%9B-%E9%A6%99%E6%B8%AF%E5%B0%8F%E7%B7%A8-%E5%8F%A5ko%E7%B6%B2%E6%B0%91
)
)
Array
(
[0] => stdClass Object
(
[title] => 獨家專訪「齊齊研究六合彩」創辦人強哥！聰明投注策略增中獎機率 強哥：中六合彩需要頭腦
[articleId] => 20063641
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20063641/%E7%8D%A8%E5%AE%B6%E5%B0%88%E8%A8%AA-%E9%BD%8A%E9%BD%8A%E7%A0%94%E7%A9%B6%E5%85%AD%E5%90%88%E5%BD%A9-%E5%89%B5%E8%BE%A6%E4%BA%BA%E5%BC%B7%E5%93%A5-%E8%81%B0%E6%98%8E%E6%8A%95%E6%B3%A8%E7%AD%96%E7%95%A5%E5%A2%9E%E4%B8%AD%E7%8D%8E%E6%A9%9F%E7%8E%87-%E5%BC%B7%E5%93%A5-%E4%B8%AD%E5%85%AD%E5%90%88%E5%BD%A9%E9%9C%80%E8%A6%81%E9%A0%AD%E8%85%A6
)
[1] => stdClass Object
(
[title] => 3次家訪無人被收樓？港女爆粗大鬧房署稱「我唔係監犯」！惹網友熱議： 河馬間屋又唔收？
[articleId] => 20064191
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20064191/%E6%AC%A1%E5%AE%B6%E8%A8%AA%E7%84%A1%E4%BA%BA%E8%A2%AB%E6%94%B6%E6%A8%93-%E6%B8%AF%E5%A5%B3%E7%88%86%E7%B2%97%E5%A4%A7%E9%AC%A7%E6%88%BF%E7%BD%B2%E7%A8%B1-%E6%88%91%E5%94%94%E4%BF%82%E7%9B%A3%E7%8A%AF-%E6%83%B9%E7%B6%B2%E5%8F%8B%E7%86%B1%E8%AD%B0-%E6%B2%B3%E9%A6%AC%E9%96%93%E5%B1%8B%E5%8F%88%E5%94%94%E6%94%B6
)
[2] => stdClass Object
(
[title] => 的士司機大爆行內辛酸史！每日搵千零兩千蚊？網民︰真係唔知的士咁好搵
[articleId] => 20064049
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20064049/%E7%9A%84%E5%A3%AB%E5%8F%B8%E6%A9%9F%E5%A4%A7%E7%88%86%E8%A1%8C%E5%85%A7%E8%BE%9B%E9%85%B8%E5%8F%B2-%E6%AF%8F%E6%97%A5%E6%90%B5%E5%8D%83%E9%9B%B6%E5%85%A9%E5%8D%83%E8%9A%8A-%E7%B6%B2%E6%B0%91-%E7%9C%9F%E4%BF%82%E5%94%94%E7%9F%A5%E7%9A%84%E5%A3%AB%E5%92%81%E5%A5%BD%E6%90%B5
)
[3] => stdClass Object
(
[title] => 5層樓港女慘成負資產 每餐食千蚊呻好慘？真實身份曝光！被踢爆做過飯局妹 做1行為即收$XX萬
[articleId] => 20064190
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20064190/%E5%B1%A4%E6%A8%93%E6%B8%AF%E5%A5%B3%E6%85%98%E6%88%90%E8%B2%A0%E8%B3%87%E7%94%A2-%E6%AF%8F%E9%A4%90%E9%A3%9F%E5%8D%83%E8%9A%8A%E5%91%BB%E5%A5%BD%E6%85%98-%E7%9C%9F%E5%AF%A6%E8%BA%AB%E4%BB%BD%E6%9B%9D%E5%85%89-%E8%A2%AB%E8%B8%A2%E7%88%86%E5%81%9A%E9%81%8E%E9%A3%AF%E5%B1%80%E5%A6%B9-%E5%81%9A-%E8%A1%8C%E7%82%BA%E5%8D%B3%E6%94%B6-xx%E8%90%AC
)
[4] => stdClass Object
(
[title] => IKEA推瑞典肉丸鑰匙扣獲讚好可愛！香港小編1句KO網民
[articleId] => 20064171
[permalink] => https://hk.ulifestyle.com.hk/topic/detail/20064171/ikea%E6%8E%A8%E7%91%9E%E5%85%B8%E8%82%89%E4%B8%B8%E9%91%B0%E5%8C%99%E6%89%A3-%E7%8D%B2%E8%AE%9A%E5%A5%BD%E5%8F%AF%E6%84%9B-%E9%A6%99%E6%B8%AF%E5%B0%8F%E7%B7%A8-%E5%8F%A5ko%E7%B6%B2%E6%B0%91
)
)
