Understanding the Difference Between Raw, Log, and Uncompressed Footage --- 了解Raw檔, Log檔和 未壓縮檔 的不同
Reference : E.M. Taboada
____Can you view raw footage on a monitor? What's baked into the image by Log recording? What's the advantage of having uncompressed footage vs compressed footage? With more and more cameras offering a variety of outputs and formats, it's easy to lose track of just what you're getting with each option and what they ultimately mean for the final image. Well, lucky for us, there are folks like Andy Shipsides at AbelCine looking to clarify and explain the differences, as he does in this very informative breakdown for HDVideoPro.
____你可以在螢幕上看Raw黨素材嗎? 甚麼東西藉由Log 記錄被焊入到影像中? 未壓縮素材對上壓縮素材有甚麼優勢? 隨著越來越多攝影機提供多樣的輸出和轉碼，很容易忘記你在每個項目得到甚麼並且最後對成品，他們的最終意義是什麼。恩，我們很幸運，有一群人，像是在AbelCine 的Andy Shipsides，希望澄清和解釋這其中的不同，如同他在為HDVideoPro所作的大量資訊分析。
____With a new wave of cameras offering raw outputs or Log recording (Arri Alexa, C500, Sony F3, RED Epic on the high end, and upcoming cameras like Blackmagic Design's Cinema Camera and the Digital Bolex on the more affordable side), it's important to understand just what you're getting:
____隨著攝影機提供raw檔輸出的趨勢，或Log的讀寫(Arri Alexa, C500, Sony F3, RED Epic 在高端, 和即將問世的攝影機像是 Blackmagic Design's Cinema Camera and the Digital Bolex on the more affordable side)，了解你取得格式是很重要的。
____Raw is not Log because Log is in a video format, and raw is not video. Raw data has no video processing baked in and has to be converted into video for viewing. Log is video and has things like white balance baked into it. They're very much not the same; however, they're both designed to get the most information out of the sensor. Raw is getting everything the sensor has to offer; likewise, Log curves are designed to get the most tonal range out of the sensor. While they're very different formats, they have the same general application. Both raw and Log can be uncompressed, but that depends on the recording device. These terms, and many others, have all become part of our vocabulary in this digital cinema world.
____Raw不是Log，因為Log是影片格式，而Raw不是影片，Raw資料沒有影片處理被嵌入，並且必須轉換成影片才能觀看。Log 是影片並且有被嵌入像白平衡的資訊。他們相當不一樣，然而，他們都被設計從感應元件得到最多的資訊。Raw檔可以取得感應元件的所有資訊;同樣地，Log 曲線被設計可以從感應元件得到最多的色調範圍。他們是非常不一樣的格式，他們有一樣多數軟體。Raw和Log兩者都無壓縮，但要看錄製設備而定。這些項目，和其他，都已變成在數位電影世界中，我們詞彙的一部分。
____For the full breakdown, check out the article here, it really is a must read for folks wanting to get an informative and concise answer to these questions. As these options become more accessible, it will be interesting to see just what impact they'll have on people's creative process, or whether folks will opt for the immediate gratification of built-in looks. Do you think these options are must-haves? If you've recorded in Log or worked with a raw workflow, what impact have they had on your shooting? Let us know!