Is A Painter's Guide to Observing Light worth it if you’re shopping in Drawing & Painting?
If your landscapes keep looking flat, the problem is rarely your brushwork. It’s that you’re painting the object, not the light hitting it. Most painters know light matters, but few can actually see the difference between the warm punch of direct sun and the cool, ambient bounce from the sky. That gap is exactly where A Painter’s Guide to Observing Light steps in. Judd Mercer, a contemporary landscape painter based in Colorado, built this course to fix that specific blind spot. It’s not a generic “how to mix colors” tutorial; it’s a focused drill on how primary and secondary light sources interact with form. If you’ve been stuck in a loop of muddy shadows or lost depth, this $30 investment is a sharp, practical way to recalibrate your eye before you even pick up a palette knife.
Quick answer
| Best for | Landscape painters and illustrators who understand basics but struggle with realistic light behavior, shadow temperature, and bounce light. |
| Skip if | You’re looking for a beginner’s “how to hold a brush” course, or if you only work in mediums where light physics don’t apply (like abstract digital art). |
| Price | $30 |
| Format | 2.5+ hours of video, lecture materials, home exercises, and 2 real-time gouache demos. |
| One-line take | A high-signal, low-noise masterclass on seeing light, not just painting it. |
What you’re actually buying
At $30, you aren’t just buying a playlist of videos; you’re buying a structured training environment for your visual perception. The core of A Painter’s Guide to Observing Light is a deep dive into the two sources that dictate every outdoor scene: the sun (primary) and the sky (secondary). Mercer breaks down how these create shadows, how they bounce off surfaces, and how they shift temperature. This is the stuff that separates a “pretty” painting from a compelling one.
The course doesn’t leave you hanging with theory. It includes 2.5+ hours of instructional video grounded in live workshop experiences, meaning the advice is practical, not academic. You get lecture materials to reference later, which is crucial when you’re standing in front of a real scene and need a quick reminder about shadow values. But the real value is in the application: two real-time demos of gouache painting. Watching an artist make decisions in real-time—how they handle a tricky bounce light or balance warm and cool tones—teaches you more than any static diagram could. (A Painter’s Guide to Observing Light)
You also receive example images to work from and exercises to practice at home. This is a smart inclusion. It turns the course from a passive watch-along into an active study. You can pause the video, look at the provided reference, and try to replicate the light behavior Mercer just explained. It’s a complete loop: observe, understand, practice, repeat. For the price of a few gallery prints, you get a system that can fundamentally change how you approach every future landscape. (A Painter’s Guide to Observing Light)
Why it’s on our radar
This course stands out because it targets a specific, high-level skill: observation. Many painting courses teach you how to paint a tree or a mountain, but few teach you how to see the light on a tree or a mountain. Mercer’s approach—using still life setups as a training ground before tackling plein air—is a classic, effective pedagogical strategy that often gets skipped in online courses. It’s a deliberate, slow-burn method that builds muscle memory in your eyes. (A Painter’s Guide to Observing Light)
The specificity of the deliverables is also impressive. You’re not getting a vague “painting tips” PDF. You’re getting a structured curriculum with real-time demos, reference images, and targeted exercises. It’s a rare case where the $30 price tag buys you a genuine educational framework, not just inspiration. If you’ve ever felt like your shadows were “off” but couldn’t articulate why, this course is designed to give you the vocabulary and the visual tools to fix it. (A Painter’s Guide to Observing Light)
A Gumroad review highlights exactly this shift in perception: “The way Judd explains how the light affects the objects we want to paint is completely amazing. I think even some experienced painters don’t know about this. Most of their shadows are cool. Why?” That’s the kind of “aha” moment this course is built to deliver.
What actually matters
Before you buy, keep these three points in mind to ensure it fits your practice: (A Painter’s Guide to Observing Light)
- It’s a visual study, not a technical manual. This course won’t teach you how to set up a gouache palette or how to fix a dried brush. It assumes you can paint and wants to teach you what to paint. If you’re brand new to the medium, pair this with a basic technique course. (A Painter’s Guide to Observing Light)
- Gouache is the demo medium, but the principles are universal. Mercer uses gouache for the real-time demos, but the light physics apply to oil, acrylic, watercolor, and even digital painting. The lessons on temperature and bounce light are medium-agnostic. (A Painter’s Guide to Observing Light)
- It’s focused on landscapes and still life. The examples and exercises are rooted in these two contexts. If you’re primarily a portrait or urban architect painter, the principles will still help, but the specific examples might feel less directly applicable. (A Painter’s Guide to Observing Light)
Mid-check
If you’re ready to upgrade your observational skills and give your landscapes the depth they’ve been missing, this is a low-risk, high-reward investment. The refund policy is straightforward, and the content is dense with actionable insight. (A Painter’s Guide to Observing Light)
FAQ
Is this course suitable for complete beginners? It’s best for painters who have some basic experience. The course assumes you know how to apply paint and understand color mixing. It’s designed to elevate your seeing skills, not teach you the fundamentals of brushwork. If you’re just starting out, consider a basic painting course first, then use this to refine your light handling. (A Painter’s Guide to Observing Light)
Do I need to paint in gouache to benefit from this? No. The demos are in gouache, but the core lessons about primary/secondary light, shadow temperature, and bounce light apply to any medium. You can watch the demos and apply the principles to oils, acrylics, watercolors, or digital art. (A Painter’s Guide to Observing Light)
How long do I have access to the course? You get lifetime access to the video content, lecture materials, and exercises. You can watch the demos as many times as you need, and the reference images are yours to keep for future practice. (A Painter’s Guide to Observing Light)
Bottom line
A Painter’s Guide to Observing Light is a focused, high-value course for any painter who wants to move beyond “good enough” and start capturing the dynamic, mood-shaping power of light. At $30, you get a structured, practical system with real-time demos and exercises that will challenge your eye and improve your results. If your landscapes feel flat or your shadows lack conviction, this is the tool to fix it.