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London Fog: Lighting Production in UE4

Maria Yue discussed the recent London Fog project, shared her workflow in Unreal Engine and gave some tips for those who want to become a lighting artist.

London Fog

Introduction and Career

Hello, I am Maria from ChongQing, China. Currently, I am working as a senior lighting artist at Splash Damage in London, UK. I previously worked at Crytek in Frankfurt, Germany, and Ubisoft Shanghai, Cloud Imperium Games in the UK. I worked with a few inhouse engines for my full-time job, and I am a frequent user of CryEngine and UE4. 

During the past 7 years in the industry, I have worked on 2 of the FarCry franchise, including FarCry 4 and the DLC Valley of the Yeti, FarCry Primal, StarCitizen, and Gears5, 2 VR projects: Robinson The Journey and The Climb.   

I studied photography and stage design in my university, and I always loved playing video games, However, I never thought I could work in the game industry, back in 2010, I thought that I must have some good knowledge in coding or computer graphics. Until I played Mirror’s edge and find out that there is a role called lighting artist. I realize there is a profession in video game request good understanding of lighting, rendering, and cinematography. Back then, I knew how to set up a studio light and how to shoot a natural environment picture, I had a bit of understanding about cinematography, too, so I picked up a few software courses online, started learning Maya and Unreal while working part-time in galleries and theaters. 

The Influence

To me, the theory of stage lighting design and digital photography benefits me the most while working in video games on lighting design and compositing. For sure, it's important to keep me up-to-date in terms of modern rendering technology. Moreover, lighting artist is an artistic role that requests both, tech and art understanding. Spending time training in both aspects are important.   

Gathering the Reference

I am always fascinated by the English weather and Victorian architecture, and after living in London for a few years, the local weather shows a really significant influence on my lighting style. In the beginning, I was simply aiming to make the lighting close to my everyday observation below.

Some pictures I took with my phone recently.

1 of 2

When I saw this Victorian street in Unreal Marketplace by Richard Vinci, I feel this layout could be a solid base for my lighting design.

Richard’s scene is very well dressed as a starting point to push the target gloomy but sunny weather effect, so I collected some of my favorite movie screenshot and throw them into my Pureref for my mood-board below.

I decide to use stationary skylight and sunlight. Stationary light is really friendly when pushing the glossiness effect on materials. My goal is to achieve a really soft but exuberant lighting effect. Instead of too much post-process, I choose to mix my first lighting source (sunlight) and the secondary light source (skylight) with balanced intensity, as to how real-life lighting works. This pipeline requests a good balance on lighting saturation and intensity. I was training for studio photography, maybe that’s why I feel this method works better for me. 

Setting Up the Scene

I usually start with a good balance of brightness of my directional light and ambient light. 

My exposure set up is manual, it allows me to work with a wide range of light brightness and exposure set up, instead of exposure compensation, I use lens-setting in the camera, so I could have separate control in different camera position, just like shooting photos in real life.

To make the manual exposure set up works the best, I refer some parameters to the sunny 16 rule.

The example of using exposure compensation.

And for the final result, I have 3 different cinematic cameras that allow me more freedom on exposure, depth of field, and focus point adjustment.

Working on the Sky

For the exterior scene, I believe matching the skylight and skybox texture is very important to deliver the mood. I start with a free HDR skybox that I found on the free HDR sky website, thanks to the artist for the generous sharing. 

Then I simply use an editor sphere and adjust the brightness via material nodes.


Below are my sun and skylight setting. The number looks a bit crazy than usual, but this is due to the fact that I use a manual exposure method in my post-process instead of the auto histogram. 

Sunlight Setting

Skylight Setting

Those numbers above are chosen based on this luminance level estimation I found on Google.

It's not necessary to consider following the luminance level estimation as a must in the workflow, however, since Unreal Engine introduced those parameters like lux and candela per square meter (cd/m2), it might be a good idea to have some real-life information as a reference.

Some Piece of Advice for Beginners

I believe it's easier to continue working on something you really love or familiar with. Looking up for the reference from life observation and artistic resources together give me a better understanding of how to push my lighting design further. Also, choosing a clear direction for the mood/color and sticking on it is really helpful to me. Most of my personal work ideas come from my daily observation about light and environment, and I love taking pictures with my phone whenever I saw anything interesting. 

Thanks for the invitation to the interview. 

Maria Yue, Lighting Artist

Interview conducted by Kirill Tokarev

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