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Hãy viết đoạn tóm tắt về nội dung bằng tiếng việt kích thích người mua: Anker Nebula Mars 3 Air Review: The New Portable Projector to Beat

For the last few years, we’ve repeatedly praised the as one of the . In the same breath, we also explained that this was despite some issues: The streaming interface wasn’t great, its color was a bit off and it wasn’t particularly bright (although similar to its competition). We were let down when the Mars 3 appeared and it was a radically different projector.

8.1

Anker Nebula Mars 3 Air

Like

• Great size
• Google TV streaming
• Decent color and contrast for a portable

Don’t like

• A little pricey
• Shorter battery life

Turns out Anker forked the Mars line and the true replacement to the II Pro is the 3 Air. It has the same overall design, a higher resolution and uses Google TV for its streaming interface; all potentially solid improvements. The battery life is down a little, as are the claimed lumens. How much of an upgrade it was remained to be seen (pun intended). 

• Native resolution: 1080p
• HDR-compatible: No
• 4K-compatible: No
• 3D-compatible: No
• Lumens spec: 400
• Zoom: No
• Lens shift: No
• Lamp life: LED, so the life of the projector

One of the biggest changes between the Mars 3 Air and its predecessor, the Mars II Pro, is the increase in resolution to 1080p from 720p. More pixels is pretty much always a good thing with projectors since said pixels are going to be huge. 

Anker lists the 3 Air as having 400 ANSI lumens. In the most accurate mode, I measured approximately 252 lumens. In the less accurate, and visibly green, Bright mode, I got 354 lumens. Given the variances and errors in any measurement method, I’d say that’s pretty close. It’s also fairly average for portable projectors, although far lower than traditional, battery-free  — even at around the same price. For instance, the was just $30 more than the 3 Air but 8x brighter (although in all fairness, the Epson EpiqVision Flex CO-FH02 had other shortcomings). 

As is typical with portable projectors, there’s no lens shift or zoom. If you want a bigger or smaller image, you just need to move the projector farther or closer to the screen. There is electronic focus which activates automatically, or you can activate it from the remote. You can adjust focus in the menu as well. There’s also automatic keystone correction, but I  and just do your best to line up the projector perpendicular to the screen or wall.

Battery life is a claimed 2.5 hours, 1 hour less than the Mars II Pro. This is in the Eco brightness mode, which is roughly 30% as bright as the normal mode (approximately 97 lumens in the accurate mode). There’s no rating for the lamp life, but it’s LEDs so I’d expect them to last the lifetime of the projector. 

Inputs and streaming

The additional resolution of the newer model is probably the biggest difference. While I always point out that resolution is just one aspect of an image, and not a particularly important one, stepping up from 720p to 1080p for a projector is a sizeable jump. From a normal viewing distance, keen-eyed viewers will be able to see the pixels of a 100-inch 720p image. With 1080p you’d need to be sitting closer or have to create an image that’s much larger. 

Next up: the Xgimi Halo Plus. Specs-wise, the Mars 3 Air and the Halo Plus are very similar. Xgimi claimed its projector capable of 900 lumens, but that proved to be a particular gift for fiction. I measured 284, which is basically what the 3 Air produces. Contrast too was basically the same, at 368:1. Unlike the Mars 2 Pro pairing, these two projectors looked more similar visually, with a slight edge to the 3 Air. The most notable difference was the Xgimi’s slight pink tint, making the 3 Air look more natural overall. 

Even if they were the same price, the Mars 3 Air looks fractionally better than the Xgimi. They don’t cost the same, with the Halo Plus costing an additional $150, or about 20%, as of this writing. That is to say, the Mars 3 Air wins this comparison, even if it doesn’t do so with a massive performance improvement.

Portable for a price

Despite a loss of a few lumens, the Mars 3 Air is a solid upgrade over the Mars II Pro. It’s easier to use, and it looks a little better while keeping the great size of its predecessor. My only issue is that it’s creeping up in price. $600 is encroaching on the prices of some actual home theater projectors which all vastly outperform the 3 Air.

If you don’t need a battery, those are better options. If binging some shows or watching a movie nowhere near an outlet is your thing, the Mars 3 Air is the best option overall. Is it worth the $100 premium over the II Pro? Yes, but barely.

As well as covering audio and display tech, Geoff does photo tours of cool museums and locations around the world, including nuclear submarines, massive aircraft carriers, medieval castles, epic 10,000-mile road trips and more.

He wrote a bestselling sci-fi novel about city-size submarines, and also Budget Travel for Dummies. You can follow him on Instagram and YouTube. 
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