# Photography

> 1 seconde de prise, une photo pour la vie

Lumière diffue:

* softbox
* papier sulfurisé fixé avec des pinces à linge en bois (le plastique fond)
* réflecteur (dédié ou mur ou plafond)
* feutrine (fibre de verre) résistante à la chaleur / inifugé (spun)
* gélatine (à acheter en boutique d'éclairage / de matériel de spectacle)

WB "neutral": 5200K

* [A Photographer’s Guide to HSL – The Coffeelicious – Medium](https://web.archive.org/web/20161124153707/https://medium.com/the-coffeelicious/hsl-basics-a-photographers-guide-45d2605bbd23#.cx2pabuln)
* [How to Develop Your Photography Skills: 13 Steps (with Pictures)](https://www.wikihow.com/Develop-Your-Photography-Skills)
* [A Photographer’s Guide to Color Temperature | by Pixel Magazine | The Coffeelicious | Medium](https://web.archive.org/web/20210921130911/https://medium.com/the-coffeelicious/a-photographers-guide-to-color-temperature-6bbc882d1524)
* [10 Top Photography Composition Rules | Photography Mad](https://web.archive.org/web/20210916182839/https://www.photographymad.com/pages/view/10-top-photography-composition-rules)

### Astrophotographie

The great thing about random noise is that you can get rid of most of it by stacking about 40 images, with some decreasing benefit using higher numbers of images https://www.reddit.com/r/space/comments/arer0k/comment/egn6mbz

### Lenses

* [Cameras and Lenses – Bartosz Ciechanowski](https://web.archive.org/web/20210112170311/https://ciechanow.ski/cameras-and-lenses/)
* [Focal Length Finder](https://web.archive.org/web/20210119025759/https://joachimesque.github.io/focal-length-finder/)
* [Lens Calculator](https://web.archive.org/web/20211203010019/https://www.jvsg.com/calculators/cctv-lens-calculator/)

### Aestethic

Aka aestethic visual analysis, AVA

* Saliency
* Frame #
* Brightness / Contrast
* Nudity probability
* Face / skin tone
* Visual (brightness, contrast, color, motion blur)
* Contextual (face detection / shot angle)
* Composition (photography principles like "rule of thirds", symmetry, depth of field)

Best thumbnails include:

* Expressive faces
* Main characters
* Brightness
* [AVA: The Art and Science of Image Discovery at Netflix | by Netflix Technology Blog | Netflix TechBlog](https://web.archive.org/web/20220104185133/https://netflixtechblog.com/ava-the-art-and-science-of-image-discovery-at-netflix-a442f163af6?gi=8f9bb66f2ce9)
* [Trung Phan 🇨🇦 on Twitter: "A Netflix user will browse the app for 90 seconds and leave if they find nothing. Thumbnail artwork is actually NFLX's most effective lever to influence a viewer's choice. A user will look at one for only 1.8 seconds, so NFLX spends huge to optimize them. Here's a breakdown🧵 https://t.co/xVcESYjHGj" / Twitter](https://web.archive.org/web/20220104185234/https://twitter.com/trungtphan/status/1445768087832182796?s=12)
