I’ve been shooting portraits on a tight budget for years, and the single thing that separated my early work from anything worth showing was not the camera or the lens. It was having no real system for light. I’d move a softbox around until something looked “pretty good,” chimp the screen, adjust again. It worked sometimes. But I couldn’t repeat it, and I definitely couldn’t explain what I’d done after the fact.

That changed when I started studying how working professionals think about light as a measurable, repeatable thing rather than a vibe you chase. Joel Grimes’ tutorial on his ten-step lighting system is one of the clearest examples of that mindset I’ve seen laid out in a short video format, and if you haven’t seen it yet, it’s worth your full attention.

Why “Ten Steps” Is About Ratios, Not Rules

The phrase “ten steps” sounds like a recipe, but that’s not quite what Grimes is teaching. The core idea is that light has measurable stops of difference between your brightest source and your shadow areas, and controlling that spread is what gives an image its mood, its drama, its depth. A flat, even look means your ratio is narrow, maybe two or three steps. A high-contrast, punchy portrait means you’re pushing that ratio out to seven, eight, or more steps.

What Grimes is drilling into you is the habit of thinking in stops rather than in knob positions or eyeball judgments. That’s the real skill. Once you internalize it, you stop moving lights randomly and start making deliberate decisions about where you want the shadows to fall and how dark you want them to go.

How the System Works in Practice

The basic setup Grimes demonstrates works like this. You start by establishing your key light, your main source, and you meter it. That’s your anchor. Then you measure your fill, your background, and any rim or hair lights against that anchor. The difference between each reading, in stops, gives you your ratio.

If your key is at f/8 and your fill side reads f/4, you’re sitting at a two-stop difference. That’s a relatively soft, commercial look. Push the fill down to f/2 and you’re at three stops, which starts to feel more editorial. Kill the fill entirely and let the ambient or a bare reflector handle it, and you can get into five or six stops, which is where Grimes lives for his signature dark, dramatic work.

The ten-step language refers to his personal range of usable ratios mapped across a kind of mental scale. Step one is almost flat. Step ten is near-total shadow with just enough fill to hold detail. Most portrait work lives somewhere between three and seven. Knowing where you are on that scale at any point in a shoot means you can make a fast, intentional choice rather than a lucky one.

A light meter helps here, but even without one, you can train yourself to read your histogram and your shadow areas with enough discipline to approximate this system. It’s slower that way, but the thinking process is the same.

Where Budget Shooters Can Apply This Right Now

Here is the honest version of this technique for people not working in a fully equipped studio. You do not need a complete multi-light setup to start using ratio thinking. I’ve done this with a single speedlight and a foam board reflector. The key light is the flash. The reflector is the fill. I back the reflector further from the subject to lower the fill and widen the ratio, or bring it closer to narrow the gap. Simple, cheap, controllable.

The same principle applies outdoors. Shade acts as your fill. A direct patch of sun through a gap in the trees can be your key. Your job is to place your subject so the ratio between those two sources matches what you’re going for. Knowing the ten-step framework gives you a vocabulary for what you’re seeing and a direction to move when it’s not quite right.

The One Place This System Gets Tricky

Grimes’ approach is optimized for controlled studio conditions where you can isolate and adjust each light source independently. That’s its strength and its limit. When I’m shooting somewhere with mixed ambient light, especially indoors with windows and overhead fluorescents competing, metering individual ratios gets complicated fast because your sources are affecting each other in ways that are harder to isolate.

My workaround in those situations is to start by killing or blocking the worst competing source, usually the overhead lights, and treating the window as my key. Then I think about what’s filling the shadow side and whether I need to add or subtract. I’m still using the ratio logic, but I’m problem-solving the environment first before I try to apply the system cleanly. If you jump straight to the ten-step framework in a messy lighting environment without addressing the chaos first, you’ll get inconsistent results and blame the method when the room was the actual issue.

The Takeaway

Light control is not about having more lights. It’s about understanding the relationship between the lights you have. Grimes’ ten-step system gives you a concrete, repeatable way to measure and intentionally set that relationship every single time you shoot.

Watch the full video to see the visual demonstration of how the ratios actually look across his scale. Reading about stops is useful. Seeing what a seven-stop ratio looks like on a face compared to a three-stop ratio makes it stick in a way that no article can fully replicate.