How was this glow effect created in cel-shaded anime?


I sometimes see this glow in the old stuff. Curious if this technique has a
name, and how this was made.

Here is an example from _Golden Boy_.

[![](https://i.stack.imgur.com/k3AoNm.png)](https://i.stack.imgur.com/k3AoN.png)

A few extra examples, all from _Rurouni Kenshin_ 's second opening.

[![](https://i.stack.imgur.com/MYIMpm.jpg)](https://i.stack.imgur.com/MYIMp.jpg)
[![](https://i.stack.imgur.com/flYAwm.jpg)](https://i.stack.imgur.com/flYAw.jpg)
[![](https://i.stack.imgur.com/ztjVQm.jpg)](https://i.stack.imgur.com/ztjVQ.jpg)
[![](https://i.stack.imgur.com/aeIRpm.jpg)](https://i.stack.imgur.com/aeIRp.jpg)

And from _Words Worth_.

[![](https://i.stack.imgur.com/1a7aCm.png)](https://i.stack.imgur.com/1a7aC.png)

Is there a documentary about the technology and business aspects for using
this glow effect?




All your screenshots look like conventional cel animation but are done with
various different techniques.

The first image the "glow" looks like it was painted with an
[airbrush](https://en.wikipedia.org/wiki/Airbrush), probably on its own cel
sheet overlaying the rest of the image.

The lens flare effects in your second and fourth screenshots look they were
painted on separate cel sheets and then optically faded in and out to animate
them and then combined with the background using multiple exposures.

The glow of the candles in the third image was probably airbrushed on the same
cel as the candle flames.

I'm not sure how the animated sunlight falling on the water in the fifth image
was done, but my guess is it was simply hand-painted.

The last image with the glowing bar was probably done with an airbrush similar
to the previous examples, though it could be that a
[diffuser](https://en.wikipedia.org/wiki/Diffuser_\(optics\)) was placed in
front of the camera lens.




All your screenshots look like conventional cel animation but are done with
various different techniques.

The first image the "glow" looks like it was painted with an
[airbrush](https://en.wikipedia.org/wiki/Airbrush), probably on its own cel
sheet overlaying the rest of the image.

The lens flare effects in your second and fourth screenshots look they were
painted on separate cel sheets and then optically faded in and out to animate
them and then combined with the background using multiple exposures.

The glow of the candles in the third image was probably airbrushed on the same
cel as the candle flames.

I'm not sure how the animated sunlight falling on the water in the fifth image
was done, but my guess is it was simply hand-painted.

The last image with the glowing bar was probably done with an airbrush similar
to the previous examples, though it could be that a
[diffuser](https://en.wikipedia.org/wiki/Diffuser_\(optics\)) was placed in
front of the camera lens.

