Anker Nebula Mars 3 vs. BenQ GS50: Finding Your Perfect Portable Outdoor Projector

When summer evenings roll around or you're planning that perfect camping trip, few things beat the experience of watching movies under the stars. Portable outdoor projectors have transformed how we enjoy entertainment outdoors, merging technology with adventure in ways that weren't possible just a few years ago. Today, I'm comparing two leading contenders in this space: the Anker Nebula Mars 3 and the BenQ GS50.

Both promise to deliver cinematic experiences wherever you go, but they take different approaches to solving the outdoor projection puzzle. Let's dive deep into what makes each unique, where they excel, and how to decide which deserves a spot in your outdoor entertainment setup.

The Evolving World of Portable Outdoor Projectors

Portable projectors have come a long way from the dim, bulky contraptions of yesteryear. Today's outdoor projectors combine impressive brightness, battery power, smart features, and ruggedized designs that can handle the unpredictability of outdoor environments.

The BenQ GS50, released in late 2021, represented a significant step forward in the portable projector market with its focus on outdoor durability and audio quality. The Anker Nebula Mars 3 arrived more recently in 2023, building on Anker's experience with previous Mars models and incorporating the latest advancements in portable projection technology.

In this relatively young product category, each new generation brings dramatic improvements in key areas like brightness, battery life, and smart features. The latest models like these two incorporate technologies that would have seemed impossible in portable form factors just five years ago.

Price and Value: The Investment Question

Let's address the elephant in the room first: these aren't budget devices. The Anker Nebula Mars 3 typically retails for $1,000-$1,100, while the BenQ GS50 comes in at a more accessible $799.

This price difference of approximately $200-300 is significant enough to influence many buying decisions, but as we'll see, it also reflects some important capability differences. The question becomes whether those additional capabilities matter for your specific usage scenarios.

Image Quality and Brightness: The Core Experience

Resolution and Detail

Both projectors deliver 1080p Full HD resolution, which provides a crisp, detailed image for most content. While 4K projectors are becoming more common in the home theater space, 1080p remains the sweet spot for portable projectors, offering a good balance between detail and power consumption.

In practical terms, at typical viewing distances for outdoor scenarios (around 10-15 feet from the screen), 1080p resolution provides plenty of detail for movies, sports, and gaming. I've used both in various outdoor settings, and the resolution has never been a limiting factor in the viewing experience.

Brightness: A Critical Difference

Perhaps the most significant technical difference between these projectors is their brightness output:

• Anker Nebula Mars 3: 1000 ANSI lumens
• BenQ GS50: 500 ANSI lumens (with independent tests measuring closer to 419 ANSI lumens)

ANSI lumens is a standardized measurement of light output, and this difference is dramatic. With approximately twice the brightness, the Mars 3 can produce a viewable image in more challenging lighting conditions.

In practical terms, this means the Mars 3 becomes usable earlier in the evening during summer months when you might want to start a movie before complete darkness falls. It also means the image remains more visible when there's ambient light from nearby sources like patio lights or neighboring homes.

During my testing, the Mars 3 could produce a watchable (though somewhat washed out) image starting around sunset, while the GS50 really needed dusk to transition to night before the image became satisfyingly vibrant. If you're planning primarily for complete darkness scenarios, this difference becomes less important.

Projection Size and Flexibility

The Mars 3 can project images from 30 to 200 inches diagonal, while the GS50 tops out at 100 inches. This difference matters primarily for larger group viewings or when you want to create a truly immersive experience.

Both projectors feature similar throw ratios (1.2:1 for the Mars 3 and 1.21:1 for the GS50), meaning they need to be positioned at roughly similar distances from the screen to achieve the same image size.

Color Accuracy and Contrast

Both projectors support HDR content, with the GS50 adding HLG support as well. HDR (High Dynamic Range) enhances the contrast between the brightest whites and darkest blacks, creating more depth in the image. HLG (Hybrid Log Gamma) is a specific HDR standard used primarily in broadcast television.

The GS50 boasts a claimed contrast ratio of 100,000:1, which contributes to its strong color performance. In side-by-side comparisons, I found the GS50 produced slightly more natural-looking colors, particularly with skin tones and nature scenes. The Mars 3 tends to produce slightly more saturated colors that pop more dramatically but sometimes at the expense of natural appearance.

For movie watching, particularly with films that have distinctive color grading like "Mad Max: Fury Road" or "La La Land," the GS50's more nuanced color rendering is noticeable and appreciated. For casual viewing of TV shows or sports, the Mars 3's punchy colors work very well.

Portability and Battery Life: The Freedom Factor

Battery Performance

A portable projector is only as good as its battery life, and here we see another significant difference:

• Anker Nebula Mars 3: Up to 5 hours in Eco mode, 2 hours in Standard mode
• BenQ GS50: Up to 2.5 hours

This difference can be crucial depending on your usage. The Mars 3 can handle most feature-length films even in its brighter Standard mode, and can potentially show two movies back-to-back in its Eco mode. The GS50 will typically get through one movie but might struggle with longer films without a recharge.

It's worth noting that both projectors support passthrough charging, meaning you can connect them to a power source while operating. If you're using them in locations where power is available (like a backyard), the battery life difference becomes less relevant. For truly off-grid scenarios like camping, the Mars 3's superior battery endurance provides meaningful additional flexibility.

Size and Weight

The physical design approaches differ noticeably:

• Anker Nebula Mars 3: 6.3" x 10.2" x 9.8", weighing 9.9 lbs
• BenQ GS50: 5.9" x 7.5" x 5.9", weighing 8.6 lbs

The GS50 is more compact in every dimension and over a pound lighter. Its cubic design with a leather handle makes it exceptionally portable. The Mars 3, while still movable, has a larger footprint that takes up more space in a backpack or car trunk.

If you're regularly taking your projector on hiking trips or packing it for travel, the GS50's more compact size could be a meaningful advantage. For moving between the backyard and living room, the difference is less significant.

Durability and Outdoor Features: Built for the Elements

Weather Resistance

Both projectors feature ruggedized designs meant to withstand outdoor conditions, but with different levels of protection:

• Anker Nebula Mars 3: IPX3 water resistance, 0.5m drop resistance, 0.7mm dust resistance
• BenQ GS50: IPX2 splash-proof rating, drop-resistant up to 70cm

IPX3 means the Mars 3 can withstand water sprays at up to a 60-degree angle, effectively handling light rain. IPX2 for the GS50 means protection from water drops falling at up to a 15-degree angle – essentially protection from very light drizzle or accidental splashes.

The GS50 offers better drop protection (70cm vs 50cm), which could be valuable if you're using it around children or in environments where accidental bumps are likely.

In my experience using both outdoors, the Mars 3's superior water resistance provides valuable peace of mind when unexpected weather changes occur. I've used it during a light summer shower without issues, though I'd still recommend protecting either projector from sustained exposure to the elements.

Audio Performance: Surprising Sound in Small Packages

One of the most impressive aspects of both projectors is their audio capability, eliminating the need for separate speakers in most scenarios:

• Anker Nebula Mars 3: 40W 3-way speaker system with Dolby Audio
• BenQ GS50: 2.1 channel system (2x 5W midrange tweeters, 1x 10W woofer) with 270-degree sound

The Mars 3 boasts higher total power output, creating impressive volume capability that can fill a backyard space. The GS50 takes a more refined approach with a dedicated woofer for bass response and speakers designed to project sound in a 270-degree pattern, creating a more immersive soundstage.

In practice, the GS50 produces more balanced audio with surprising bass response for its size, while the Mars 3 can get louder but with slightly less definition in the low end. For dialogue-heavy content, both perform admirably, but for action movies or music, the GS50's better bass response is noticeable.

One unique feature of the GS50 is its ability to function as a standalone Bluetooth speaker even when not projecting. This dual functionality adds value, effectively giving you two devices in one.

Smart Features and Connectivity: Making Content Access Simple

Operating System and User Experience

Both projectors run on Android TV, though different versions:

• Anker Nebula Mars 3: Android TV 11.0 with Google Assistant
• BenQ GS50: Android TV 9.0

The newer Android TV 11.0 on the Mars 3 provides some additional features and better long-term support, though in day-to-day use, the difference isn't dramatic. Both interfaces are intuitive, providing access to major streaming services and apps through the Google Play Store.

One notable difference is that the Mars 3 includes better Netflix compatibility out of the box. The GS50, like many Android TV projectors, requires some workarounds to get Netflix running smoothly, though this has improved with updates since its release.

Wireless Connectivity

Both projectors offer robust wireless options:

• Anker Nebula Mars 3: Dual-band Wi-Fi (2.4/5 GHz), Bluetooth 5.1, Chromecast built-in
• BenQ GS50: Wi-Fi (2.4/5 GHz), Bluetooth 4.2, Chromecast, AirPlay

The addition of AirPlay on the GS50 is a meaningful advantage for Apple users, allowing seamless streaming from iPhones, iPads, and Macs without additional apps or setup. The Mars 3 has more current Bluetooth technology, which provides better range and connection stability for Bluetooth audio devices.

Physical Connectivity

For connecting external devices like gaming consoles, both offer good options:

• Anker Nebula Mars 3: HDMI, USB-A, USB-C, 3.5mm audio output
• BenQ GS50: HDMI 2.0, USB-A, USB-C (DisplayPort Alt Mode), 3.5mm audio output

The GS50's USB-C port with DisplayPort Alt Mode is particularly versatile, allowing direct connection to many laptops and mobile devices without requiring an HDMI adapter. This can be a significant convenience when connecting newer devices that might not have full-size HDMI ports.

Unique Features: The Extra Touches

Anker Nebula Mars 3 Standouts

The Mars 3 includes some innovative features that enhance its usability:

• Intelligent Environment Adaptation 3.0: This system automatically adjusts focus, keystone correction, and screen size within seconds of setup, making it exceptionally easy to get a properly configured image.
• Autobright AI Technology: The projector automatically adjusts brightness based on ambient light conditions, optimizing both image quality and battery life.
• Power Bank Functionality: The Mars 3 can charge other devices via its USB ports, potentially eliminating the need to carry a separate power bank on trips.

BenQ GS50 Differentiators

The GS50 offers its own unique advantages:

• Bluetooth Speaker Mode: Use it as a standalone premium Bluetooth speaker when you don't need projection.
• QS01 Media Streamer: This built-in media stick supports 4K content (though downscaled to the projector's 1080p resolution) and provides the smart TV functionality.
• Compact Design with Leather Handle: The aesthetic and practical design makes it feel like a premium portable device that's meant to be taken places.

Home Theater Considerations

While designed primarily for outdoor use, both projectors can serve double-duty as home theater devices when not being used outdoors.

For dedicated home theater use, the Mars 3's higher brightness means it can work in rooms with some ambient light, while the GS50 performs best in fully darkened rooms. The Mars 3's automatic screen adaptation also makes it easier to quickly set up in different rooms of your home.

However, it's worth noting that for the same price as either of these portable projectors, you could purchase a dedicated home theater projector with significantly higher brightness and better overall image quality – you'd just lose the battery-powered portability. If your usage will be 90% indoors, specialized home theater projectors from companies like Epson, BenQ, or Optoma would provide better performance for the money.

How to Decide: Finding Your Perfect Match

After spending considerable time with both the Anker Nebula Mars 3 and BenQ GS50, I've developed a clear sense of who each projector is best suited for.

Choose the Anker Nebula Mars 3 if:

• You need maximum flexibility in when and where you can project – its brightness makes it usable in more lighting conditions
• You regularly watch longer content or multiple movies back-to-back without access to power
• You want to project truly large images (beyond 100 inches)
• You frequently use your projector in environments where light rain is possible
• You value the simplicity of automated setup features
• Budget is less of a concern than getting maximum performance

Choose the BenQ GS50 if:

• You're more price-sensitive and looking for excellent value
• You primarily use the projector in fully dark environments where its lower brightness isn't a limitation
• You appreciate more refined audio quality with better bass response
• You're an Apple user who would benefit from AirPlay functionality
• You prioritize maximum portability with the smaller size and weight
• You like the idea of having a quality Bluetooth speaker as a bonus feature

Final Thoughts

Both the Anker Nebula Mars 3 and BenQ GS50 represent the current state of the art in portable outdoor projection, and either one would dramatically enhance your outdoor entertainment capabilities.

The Mars 3 is the more technically capable device, with its significantly higher brightness, longer battery life, and excellent smart features justifying its higher price point for those who need maximum flexibility. The GS50 delivers impressive performance in a more compact, affordable package that will satisfy most users, especially those who primarily use it in optimal viewing conditions.

Your decision ultimately comes down to your specific use case and budget. If you'll be using your projector in varied lighting conditions and need maximum versatility, the Mars 3's additional capabilities are worth the investment. If you're primarily projecting in dark environments and value portability and audio quality, the GS50 offers outstanding value while saving you a significant amount of money.

Whichever you choose, both projectors represent how far portable projection technology has come – making the magic of outdoor cinema more accessible than ever before.

Anker Nebula Mars 3 Outdoor Portable Projector Deals and Prices

BenQ GS50 Portable Outdoor Projector Deals and Prices