Jul 27, 2018 To implement and use Bokeh, we first import some basics that we need from the bokeh.plotting module. Figure is the core object that we will use to create plots.figure handles the styling of plots, including title, labels, axes, and grids, and it exposes methods for adding data to the plot.

Bokeh comes from the Japanese word ‘boke’, which means fuzzy. In photography, bokeh defines the quality of the blurred lights presented in a photo. We’re not referring to a badly taken photo that’s all out of focus, but rather the aesthetically pleasing background blur. Usually, this type of blur highlights the focused subject even more.

Producing nice bokeh involves creating a shallow depth of field.

Here are some tips to get you started with bokeh photography:

1. So bokeh was part of our inspiration for these lenses to create new Petzval lenses, which give the same special swirly bokeh,” says a rep from Lomography. The Lomography Petzval 85mm f/2.2 lens is known for its intentionally swirly bokeh. Another swirly lens is the Helios-44 lens family, manufactured in the former Soviet Union.
2. Download and use 4,000+ bokeh stock photos for free. Daily thousands of new images Completely Free to Use High-quality videos and images from Pexels.
3. Use Bokeh server and set up event handlers. In this section, we shall see how to add Bokeh widgets and assign JavaScript callbacks. This widget is a clickable button generally used to invoke a user defined call back handler. The constructor takes following parameters −.
4. Bokeh is a fiscally sponsored project of NumFOCUS, a nonprofit dedicated to supporting the open-source scientific computing community. Donations help pay for cloud hosting costs, travel, and other project needs. ©2021 Bokeh Contributors. The website content uses the BSD License and is covered by the Bokeh Code of Conduct.

1.) Larger aperture works best, so use a low f-stop number like f1.4, f1.8 or f2.8. I like using the Canon EF 50mm f/1.835mm f1.4 for this project.

2.) Set your camera to aperture priority.

3.) You would need to set the shutter speed faster than 1/50 second. Any slower and I find the background lights getting blurred together, instead of rendering small circles. If it’s too dark, increase the ISO level rather than the f-stop number.

4.) The closer you get to subject, the better. If you’re using a zoom lens, extend it to the longest focal length.

5.) The further away the background, the better.

6.) Ensure that the background is lit. Glowing lights like street lamps and traffic lights work best. While a consistently lit background would just create a regular blur.

7.) If you don’t have a subject and want to create the bokeh effect with the night lights, manually focus your camera.

Bokeh Overlay

Get inspired by the photos below and show us your best bokeh shots!

Yuki-chan and the Bokeh by josh.liba

TTL by E-Rocks

The one with the red thread by dsevilla

Taxi by Al Fed

Sheep meadow by orangachang

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Kulio’ou’ou by da_godfaddah

Bokeh Photography

I wish I was special by irene gr

Heart by seyed mostafa zamani

Have a Very Bokeh Christmas by Brandon Christopher Warren

Burst of Life by matthileo

Blur of city lights by Yiie

Ashlin by matt caplin

Aeia Loop by da_godfaddah

Another Journey By Train by Steve Leggat

Bokeh Star by Maschinenraum

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See the sections below for examples of using Bokeh in different ways.

The examples linked below all show off usage of the Bokeh server. TheBokeh server provides a place where interesting things can happen—datacan be updated to in turn update the plot, and UI and selection eventscan be processed to trigger more visual updates.

An interactive query tool for a set of IMDB data

Source code: movies

Shows axis histograms for selected and non-selected points in a scatter plot

Source code: selection_histogram

Interactive weather statistics for three cities

Source code: weather

A basic demo that has sliders for controlling a plotted trigonometric function

Source code: sliders.py

Explore the 'autompg' data set by selecting and highlighting different dimensions

Source code: crossfilter

A reproduction of the famous Gapminder demo, with embedded video added using a custom page template

Source code: gapminder

Linked plots, summary statistics, and correlations for market data

Source code: stocks

An updating 3d plot that demonstrates using Bokeh custom extensions to wrap third-party JavaScript libraries

Source code: surface3d

Explore the 'autompg' data set by selecting and highlighting different dimensions

Source code: export_csv

The best place to immediately experiment with Bokeh in notebooks is in thelive tutorial notebooks hosted online by MyBinder. Static versions of thesemay also be viewed online (or downloaded and executed locally) at theBokeh NBViewer Gallery.

All of the examples below are located in the examplessubdirectory of your Bokeh checkout. By “standalone” we mean thatthese examples make no use of the Bokeh server. These plots stillhave many interactive tools and features, including linked panningand brushing, and hover inspectors.

Click on an image below to see its code and interact with the liveplot.