https://github.com/justinribeiro/dof-calculator-pwa

A tiny no-frills progressive web app depth of field calculator for film cameras.
https://github.com/justinribeiro/dof-calculator-pwa

no-frills pwa webplatform

Last synced: 9 days ago
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A tiny no-frills progressive web app depth of field calculator for film cameras.

• Host: GitHub
• URL: https://github.com/justinribeiro/dof-calculator-pwa
• Owner: justinribeiro
• License: mit
• Created: 2019-05-24T22:46:47.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2022-12-10T15:25:33.000Z (about 2 years ago)
• Last Synced: 2024-10-23T23:59:24.332Z (4 months ago)
• Topics: no-frills, pwa, webplatform
• Language: HTML
• Homepage: https://dof-calculator.pwa.run/
• Size: 652 KB
• Stars: 6
• Watchers: 1
• Forks: 1
• Open Issues: 7
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# dof-calculator-pwa

> A tiny no-frills depth of field progressive web app for film cameras.

![dof-calculator pwa run_(Nexus 5X) __size](https://user-images.githubusercontent.com/643503/58516939-85033680-815e-11e9-9ff7-67d5f1a46db1.png)

## Why?

Because this is just one of a series of utility PWA's I've had lying around that I use that might be useful to other folks.

## Dev

Hop into the `src` folder and run the local web server of your choice. No specific tool required.

## Build

I didn't really wrap this with build tooling, but I did crunch it down to 1.7K gzip'ed for fun using closure compiler and http-minifier. The rest is just some fancy Linux CLI jumping and sed (and I almost just used a make file instead ;-).

```sh

$ yarn install

$ yarn dist

```

## FAQ

> 1. _How does this calculate depth of field?_

This is a pretty basic calc that you can find on the likes of [Wikipedia](https://en.wikipedia.org/wiki/Depth_of_field) or any of the many DoF calculators out there. This is not a lensmaker calculation (which is more involved).

> 2. _How does this calculate circle of confusion?_

Via: `CoC = 1 / (lines/mm * (diagonal^8x10 print / diagonal^filmFormat))`, where lines/mm is 5.

> 3. _Why does this use 5 lines per millimeter as the basis for circle of confusion calculation?_

Personal preference.

> 4. _Why doesn't this include tilt degree?_

If I'm using tilt/swing, I've got a loupe on the ground glass. I don't find the calculation for Scheimpflug wedge particularly useful in the field.