Philip - please come in

2010-05-12 10:47 am
I know this is a board question of Canon EOS 1000D. Under what condition should I increase or decrease the “Sharpness,” “Contrast,” and “Saturation” in the Picture style menu? Give me some examples please. Your efforts in answering the question in details would be highly appreciated.

回答 (1)

2010-05-12 5:57 pm
✔ 最佳答案
關於Picture style如何設定其實係好個人喜好.1000D裏面既預設Picture style其實就係Canon工程師既建議.
Sharpness, Contrast同埋Saturation表面聽來似乎係好嘢,多啲冇壞.啲人買甚麼鏡皇都係追求呢啲表現.但係用數碼方法做出來既係唔同原本光學既表現的.
所謂加Sharpness其實只係將影像邊緣既亮度增高,令到睇起來較Sharp.適可而止效果會好好亦都係必需.過咗火就會見到出晒白邊,而由於相機係唔知甚麼係真正邊緣,即使一粒雜訊既邊緣都會加Sharp,咁結果係令雜訊明顯咗,有啲起渣感覺.
對比度就係亮度既差距,增加的話可以令光位更光,黑位更黑.影像鮮明看起來很討好.但係過咗火就會令原本冇咁光既地方都好光,冇咁暗既地方都好暗,影像層次小咗.例如影人啲頭髮變咗頂帽咁.太陽曬到既地方就白晒.
飽和度同對比度原理差不多,不過佢係深淺色的關係,加得過咗火就會變晒得翻深色,冇層次.例如影紅花咁,就成朵花都好紅,但係冇晒紋.
咁好喇,點先叫適可而止呢?一般來講,多數人接受影風景可以假啲,似畫咁都冇所謂,所以三個參數都不妨高小小.但當然要注意影像層次消失的問題.但有時又會寧願層次小啲,但張相搶眼啲,點樣增減靠經驗之餘亦好睇你喜好.
又例如影人像咁,一般認為皮膚滑啲較討好,所以Sharpness唔會咁高.另外嘢嘢大紅大綠都太假,所以對比,飽和等都會低小小.不過呢啲又係好個人喜好,好似我咁,我影人同影景都係用相同Sharpness的,要皮膚滑唔該自己化好妝先影.又或者影既時候唔好用咁硬光影都唔會整矇張相去就.
其他題材都係用呢個方向去考慮,係咪覺得好煩呢?如果影下景又影下人咁咪成日較來較去,好唔得閒?所以我一向都話要影raw,之後先用電腦微調.Picture style用一個較中性既就得喇.


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