Originally published at: http://www.howtogeek.com/163491/how-to-add-film-grain-to-your-digital-photos/
One of the elements of film-based photography lost with the transition to digital photography is the presence of film grain. If you want to recapture the effect with your modern digital rig, read on as we show you how.
Only one question: why?
this can be done in paint.net, also. it's a cool effect
About 60 years ago I spent quite a lot of time producing pictures without grain and I can't begin to imagine why anyone would want to reproduce it. Bit like putting solid tyres back on your car.
Grain was common on high-ISO film. You can achieve pretty much the same effect by bringing up the ISO on your digital camera if it allows you to reduce or switch off noise reduction.
obviously we want what we can't easily have