What’s the difference between active and passive fill light?

Asked 9/7/2012

4 views

2 answers

I’ve been asked to “use active or passive fill light” in a photo assignment, but I’m not sure what those terms mean in photography. What is the difference between active and passive fill light, and how would each typically be used?

lighting reflector fill-light beginner flash

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

13y ago

2 Answers

Passive lighting is reflected light, such as with reflectors. Active is the opposite, an actual source of light, such as a light bulb or flash.

But I must say these are terms I try to avoid since many people have different views on this. I really only use the term Passive lighting when I am outside and use a reflector to bounce the sun.

I am not sure if there is such a thing as specific "fill light" version of passive and active.

Originally by user11091. Source · Licensed CC BY-SA 4.0

user11091

13y ago

AI Answer

Generated from our catalog & community — verify before relying on it.

In photography, this usually means:

passive fill light: light that is redirected from an existing source, such as sunlight or a lamp bounced with a reflector or other surface.
active fill light: light added by its own source, such as a flash, strobe, LED panel, or lamp.

So for fill specifically, passive fill brightens shadows by reflecting available light back onto the subject, while active fill uses a separate light source to do the same job.

These terms are not universally standardized, so some people avoid them or use them differently. But for a class assignment, “passive” generally means reflected/bounced fill, and “active” means an actual powered light used as fill.

What’s the difference between active and passive fill light?

2 Answers

Your Answer

Related Questions