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为什么胶片审美不能只看一个分数

胶片感有好几个维度，不同胶片之间差别很大，一个数字只能当作起点。

FilmLook 会给每张照片一个 0 到 100 的胶片感评分。这一页说明这个分数能说明什么，不能说明什么。

胶片感有好几个维度

一张照片可以高光过渡很好，颜色却很数码；也可以颗粒和影调都像胶片，构图和用光却是手机快照的样子。FilmLook 把它拆成几项读数：高光、影调、色彩、质感、景深和氛围。同样是 70 分，可能是六项都中等，也可能是几项很高、一项很低。看分数时，先看这几项。

胶片之间差别很大

Velvia 的风光照饱和而浓烈，Portra 的人像柔和，Tri-X 的街头照片粗粝，CineStill 800T 的夜景带着红色光晕。它们都是“胶片”，放在一起却几乎没有共同点。所以 FilmLook 除了分数，还会给出最接近的胶片风格。一张照片和 Portra 不像，不代表它和所有胶片都不像。

分数是判断，不是测量

分数来自视觉模型的判断，再结合照片的测量数据。它有波动：同一张照片再分析一次，分数可能有几分的差别。它也会受到你没有告诉它的信息影响，比如它不知道这是不是一张真的胶片扫描。

意图比分数重要

很多好照片完全不像胶片，也不需要像。如果你想要的是干净、锐利、准确的颜色，低分就不是问题。分数只回答一个问题：这张照片的影调和颜色，和胶片的形成方式有多接近。

怎样用这个分数

• 比较同一张照片的不同版本。分数在版本之间的变化，比单张照片的绝对值更有意义。FilmLook 的比较模式就是为此做的。
• 看“为什么像数码”那一部分。它比分数更具体，告诉你该改哪里。
• 区分后期能改的和拍摄时才能改的。分数卡在某个地方上不去，常常是因为问题在拍摄时就已经定了。

评分和胶片名称都只是审美参照。FilmLook 不复刻任何胶片，也和任何胶片厂商没有关系。

下一篇：一张照片为什么看起来像胶片

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All guides

Why film aesthetics cannot be reduced to a single score

The film look has several dimensions and films differ widely, so a single number is only a starting point.

FilmLook gives each photo a Film Look Score from 0 to 100. This page explains what the score can tell you and what it can't.

The film look has several dimensions

A photo can have lovely highlight roll-off and very digital colour, or film-like grain and tone with the framing and light of a phone snapshot. FilmLook breaks the look into readings: highlights, tone, colour, texture, depth and atmosphere. Two photos can both score 70, one with every reading middling and the other high on most and low on one. Look at the readings before the score.

Films differ widely

Velvia landscapes are saturated and dense, Portra portraits soft, Tri-X street photos gritty, and CineStill 800T night scenes glow red around their lights. All of them are "film", and side by side they have almost nothing in common. That is why FilmLook names the closest film look as well as the score. A photo that looks nothing like Portra may still look like another film.

The score is a judgement, not a measurement

The score comes from a vision model's judgement combined with measurements of the photo. It varies: analyse the same photo again and it can move by a few points. It is also affected by what it hasn't been told, such as whether this is a genuine film scan.

Intent matters more than the score

Many good photographs look nothing like film and don't need to. If what you want is clean, sharp, accurate colour, a low score is not a problem. The score answers one question only: how close are this photo's tone and colour to the way film forms them?

How to use it

• Compare versions of the same photo. How the score moves between versions means more than its value for one picture. FilmLook's Compare Mode exists for this.
• Read the "why it looks digital" part. It is more specific than the score and tells you what to change.
• Separate what editing can change from what only shooting can. When a score won't rise past a point, the cause was often fixed when the photo was taken.

The score and the film names are aesthetic references. FilmLook reproduces no film and has no connection with any film maker.

Next: What makes a photograph look like film?

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