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BenQ TK705STi Beamer vs. Nebula Mars 3 Air Mini Projektor compared
Projector
At a glance
The key numbers for both devices side by side.
Overall rating
8888Gut
8888Gut
Value for money
84Excellent
95Excellent
Best price
€1,365.73
€369.99€599.99−38 %
Price advantage
—
€995.74 cheaper
Offers
1 shop
1 shop
Rank in category
Rank 5 of 40
Rank 4 of 40
Rating
Sub-ratings compared
BenQ TK705STi BeamerOverall rating 88Nebula Mars 3 Air Mini ProjektorOverall rating 88
BenQ TK705STi BeamerNebula Mars 3 Air Mini Projektor
Image quality86/10090/100
Brightness90/10082/100
Installation & setup80/10091/100
Smart features & sound87/10092/100
Motion & gaming90/10068/100
Noise, consumption & battery83/10084/100
Build quality & ease of use79/10088/100
Image quality
86
90
Brightness
90
82
Installation & setup
80
91
Smart features & sound
87
92
Motion & gaming
90
68
Noise, consumption & battery
83
84
Build quality & ease of use
79
88
Specs
Specs compared
Key specs
Model
TK705STi
Mars 3 Air
Form factorBasic form of the projector, in this order: if it sits right in front of the wall as an ultra-short-throw unit, it is a laser TV. If it has a built-in battery, it is mini & portable – even with a stand. A swivel stand or gimbal without a battery means compact with swivel stand. Everything else is classic, for table or ceiling.
Classic (table or ceiling)
Mini & portable with battery
Light sourceType of light source.
LED
LED
Native resolutionPhysical resolution of the panel or chip – not the supported input resolution. Cheap mini projectors often advertise 1080p or 4K, but their chip only has 1280×720
Full HD 1920×1080
Full HD 1920×1080
Light outputBrightness according to the manufacturer in ANSI or ISO lumens; around 3,000 or more for bright living rooms. Marketing figures such as “LED lumens” are considerably higher and not comparable.
3,000 lumens
400 lumens
Contrast (native)Native contrast without dynamic iris or laser dimming. Dynamic figures such as 1,000,000:1 are marketing.
705 :1
400 :1
Projection technologyImage generation method; with single-chip DLP, some people see rainbow effects.
DLP
DLP
Throw typeRequired distance from the projection surface.
Short throw (ST)
Standard throw
Picture & resolution
Supported resolutionHighest signal resolution the projector can process; may be higher than the native resolution.
4K UHD 3840×2160
Full HD 1920×1080
4K display methodNative = true 4K pixels; pixel shift (XPR, e-shift) creates 4K by rapidly shifting the pixels.
Pixel shift (XPR)
No 4K
Aspect ratioNative aspect ratio of the projector.
16:9
16:9
HDR formatsSupported HDR standards. Almost every projector handles HDR10; Dolby Vision and HDR10+ make the difference.
HDR10HDR10+HLG
HDR10HLG
3D-capableCan play 3D content.
No
No
Brightness & color
Brightness standardBrightness figures are only comparable within the same standard.
ANSI lumens
ANSI lumens
DCI-P3 color gamut coverageCoverage of the DCI-P3 color space; relevant for HDR content.
70.5 %
90 %
Light source & use
Light source lifespanManufacturer’s figure in hours until half brightness; lamps 3,000–8,000 h, LED/laser 20,000–30,000 h.
20,000 hours
30,000 hours
Intended useUses the manufacturer intends the projector for – often more than one.
Home theaterGamingLiving room / daylight
Home theater
Optics & installation
Minimum throw ratioSmallest value of distance divided by image width. At 1.2, the projector must be placed 2.4 m away for a 2 m wide image.
0.8 :1
1.2 :1
Maximum throw ratioLargest throw ratio value for zoom lenses.
0.8 :1
1.2 :1
Maximum image sizeLargest usable image size according to the manufacturer.
150 inches
150 inches
Optical zoomZoom factor of the lens; 1.0 means fixed focal length.
1 x
1 x
Vertical lens shiftVertical lens offset for moving the image without distortion.
0 %
Horizontal lens shiftHorizontal lens offset for moving the image without distortion.
0 %
Keystone correctionCompensates for angled placement.
Automatic
Automatic
AutofocusAutomatic image focusing.
Yes
Yes
Installation optionsSupported mounting and projection types.
TabletopCeiling mountFront projection
TabletopCeiling mountFront projectionRear projection
Gaming & connections
Input lagInput delay in the fastest mode; under 30 ms is considered good.
5 ms
44.1 ms
Refresh rateHighest supported refresh rate.
60 Hz
60 Hz
HDMI versionHighest HDMI version; 2.1 for 4K at 120 Hz.
HDMI 2.1
HDMI 2.1
ConnectionsAvailable interfaces.
HDMIHDMI with eARCUSB-AUSB-CAudio output (jack)
HDMIUSB-AAudio output (jack)
Smart features & operation
Operating systemBuilt-in smart platform for streaming apps.
Google TV
Google TV
Official NetflixNetflix runs as an official app according to the manufacturer – many low-cost Android projectors lack the license.
Yes
Yes
Wireless connectivityWireless interfaces and casting methods.
Wi-FiWi-Fi 6BluetoothAirPlayChromecast
Wi-FiBluetoothChromecast
Speaker outputOutput of the built-in speakers according to the manufacturer in watts.
16 W
16 W
Built-in batteryCan run without mains power.
No
Yes
Battery lifeRuntime on a single battery charge.
2.5 h
Operating noiseNoise level in normal mode; under 26 dB is considered quiet.
26 dB
28 dB
Power consumptionPower consumption in normal operation.
250 W
90 W
WeightWeight of the projector without accessories.
3.8 kg (8.4 lb)
1.7 kg (3.7 lb)
DimensionsWidth × depth × height in cm.
22.92 × 24.97 × 16.82 cm (9 × 9.8 × 6.6 in)
12.2 × 13.3 × 17.8 cm (4.8 × 5.2 × 7 in)
General
Warranty
2 years
1 years
Price segment
Premium
Model year
2025
In the box
Fernbedienung RCI079 mit Batterie, Netzkabel (1,0 m), Schnellstartanleitung, Garantiekarte (je nach Region)
Nebula Mars 3 Air, Fernbedienung, 2× AAA-Batterien, Netzteil, Netzkabel, Kurzanleitung
Prices
Offers
Verdict
Pros & cons
Der BenQ TK705STi ist ein 4K-Kurzdistanz-Beamer, der 100 Zoll aus knapp 1,8 m an die Wand wirft. Er passt in kleine Wohnzimmer, zu Konsolenspielern und zu allen, die Netflix ohne Stick wollen. Seine Farben sind ab Werk stimmig, der Input Lag ist kurz. Der Haken: Schwarz bleibt im Dunkeln grau, und ohne Zoom stellst du die Bildgröße nur über den Abstand ein.
Pros
- Kurze Distanz: 100 Zoll aus knapp 1,8 m Abstand
- Ab Werk farbtreu, Rec.709 zu 98 bis 100 % abgedeckt
- Input Lag von 9,6 ms in 4K mit 60 Hz
- Google TV mit offizieller Netflix-App in 4K HDR
- Hält die Helligkeit: 3.060 Lumen im hellsten Modus
- USB-C mit Bildsignal und 30 W für Switch oder Steam Deck
Cons
- Nativer Kontrast nur 570:1 bis 705:1, Schwarz wirkt grau
- Kein optischer Zoom und kein Lens Shift
- 4K nur bis 60 Hz, VRR fehlt
- Lautsprecher fast ohne Bass, laut gedreht scharf
- Fernbedienung ohne Tastenbeleuchtung
Der Nebula Mars 3 Air ist ein mobiler Full-HD-Beamer mit Akku und Google TV, der im dunklen Raum überzeugt. Netflix läuft offiziell ohne Streaming-Stick, Fokus und Trapez stellt er selbst ein. Der Haken: 400 ANSI-Lumen reichen nicht bei Restlicht, und am Akku bleiben nur 145 Lumen.
Pros
- Natives Full HD, scharf bis etwa 90 Zoll im dunklen Raum
- Gemessene 399 ANSI-Lumen, fast exakt die Herstellerangabe
- Netflix offiziell unter Google TV, ohne Streaming-Stick
- Modus Standard zeigt ausgewogene Farben bei nur 4 % weniger Licht
- Autofokus und Trapezkorrektur richten das Bild in Sekunden aus
- 2 x 8 W Lautsprecher mit verständlichen Dialogen und sauberem Bass
Cons
- Am Akku nur rund 145 ANSI-Lumen im automatischen Eco-Modus
- Bei Restlicht oder Sonne wird das Bild schnell blass
- Rund 45 ms Input-Lag, zu träge für schnelle Konsolenspiele
- HDR-Spitzlichter wirken matt, nativer Kontrast nur 400:1
- Laden nur per Netzteil, keine Objektivklappe und kein IP-Schutz
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