Godox ML40Bi vs ML40R: Choosing a Portable LED Video Light
By Red Dot Photo | Published: 2026-11-01
Category: Buying Guides
Compare the Godox ML40Bi and ML40R portable LED lights: color output, reflector brightness gain, and which one fits your filming setup.
Quick answer
Choose the Godox ML40Bi if you mainly need clean, adjustable white light and want the strongest reflector boost; choose the Godox ML40R if you need colored light for creative shots and can accept a smaller brightness gain.
The real difference is color output, not size
Both lights share the same palm-sized body, so handling and packing are identical. The decision comes down to what kind of light you need on set: the ML40Bi is built for bi-color white output, while the ML40R adds RGB color. That matters most when you shoot mood scenes, product backdrops, or music videos where colored accents do the storytelling.
If your work is interviews, talking-head videos, or run-and-gun documentary, white light is the priority and the ML40Bi keeps your kit simpler. If you regularly gel lights or want color without carrying gels, the ML40R saves that step.
Reflector brightness gain is not equal
Godox rates the ML-L10 Lens Reflector at up to 24× brighter than bare output on the ML40Bi and 16× on the ML40R. That is a meaningful gap when you are lighting a subject from across a room or competing with ambient light. The ML40Bi therefore gives you more headroom from the same tiny fixture when you add the reflector.
Bare output on both lights is modest, so plan on using the reflector for anything beyond close-up fill. If you want the most usable brightness from a pocket light, the ML40Bi has the edge.
When the ML40R is worth the trade-off
The ML40R makes sense if color is a core part of your look and you would otherwise carry gels or a separate RGB fixture. Its lower reflector gain is the trade-off: you get color control but less maximum white-light punch. For close-range accent lighting, practicals, or background washes, that trade-off is usually acceptable.
If you shoot both white and colored scenes and can only buy one, decide which happens more often. Buying the ML40Bi and renting or adding color later is often cheaper than buying the ML40R and wishing for more white-light output.
Decision rules for buying the ML40Bi or ML40R
- If white light is your priority: Buy the Godox ML40Bi. It is designed for bi-color white output and delivers the higher reflector gain, so it suits interviews, talking-head videos, and documentary work where color accuracy matters more than creative color.
- If you need colored light on set: Buy the Godox ML40R. Its RGB output lets you add color accents without gels, which is useful for music videos, product backdrops, and mood scenes. Accept that its reflector gain is lower than the ML40Bi's. Check whether you already own an RGB fixture; if so, the ML40Bi may cover your white-light needs more efficiently.
- If you shoot both white and color: Buy the ML40Bi first and add color through gels or a separate RGB light later. This gives you the stronger white-light output for most paid work while keeping the door open for color.
- If maximum brightness from a pocket light matters: Choose the ML40Bi and plan to use the ML-L10 Lens Reflector. Its up-to-24× gain is the highest available between the two models, which helps when you cannot move the light close to the subject. Budget for the reflector as part of the purchase, not as an optional extra.
Product facts
- Godox ML40Bi/ML40R Portable LED Video Light: The ML40Bi and ML40R measure 97 × 46 × 91mm and weigh about 422g. Both fit in a bag pocket, so portability is not a reason to pick one over the other.
Godox ML40Bi/ML40R Portable LED Video Light - Godox ML40Bi/ML40R Portable LED Video Light: With the ML-L10 Lens Reflector, Godox rates output up to 24× brighter on the ML40Bi and 16× on the ML40R. The ML40Bi gives more brightness headroom from the same small body when you need to light a subject at distance.
Who should buy which
Best for
- Shooters who mainly need clean white light for interviews, YouTube, or documentary
- Users who want the strongest possible output from a palm-sized fixture
Not for
- Creators who need RGB color effects and do not want to carry gels
- Anyone expecting bare output to light a room without the reflector
