OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Projectors Methodology v3.0
Projectors Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Projectors Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Projectors Methodology v3.0

ViewSonic LS901-4K review: 86 specs compared

Avg. price:~£2,260Native panel resolution:3840x2160ANSI lumens:5500Throw ratio:1.2-2.04:1Lamp life:20000 hours

ViewSonic LS901-4K Review: Compare 86 technical specifications to see how this product ranks in the Projectors category and whether it is worth buying.

ViewSonic LS901-4K
7.6/10

Overall score

Score
7.6/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, best-of lists, expert reviews and owners.
How we count it
Parts: Technical score 35%, List score 30%, Reviews score 25%, Sentiment score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 80% of models
Score components

35%

7.8

Technical score

30%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

25%

?

Reviews scoreNot enough data yet, so we use 7.8, the mark of a weaker model in this category

10%

?

Sentiment scoreNot enough data yet, so we use 6.8, the mark of a weaker model in this category

â–²Better than 80% of projectors
5.6

Value for money

Value for money
5.6/ 10
✕
What it is
An indicator that combines the projector's overall rating with its cost.
When it matters
When you are looking for a projector with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 89% of models
Score components

70%

7.6

Overall score

30%

1.0

Price

â–¼Worse than 89%
7.8

Technical score

Technical score
7.8/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 91% of models
Score components

42%

9.0

Image Quality

22%

6.6

Projection & Lens

12%

7.2

HDMI & Gaming

10%

7.0

Audio & Features

8%

6.1

Connectivity

6%

8.0

Design & Power

★Better than 91%
?

Reviews score

Reviews score
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
Share: Reviews count 25% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
Grades by review (0)
We have not found an independent test of this model yet. Until we do, its review part counts as 7.8.
User ratings collected online are not part of this score.
No expert tests yet
?

List score

List score
7.5/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 30% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
  • viewsonic-ls901-4k
  • viewsonic-ls901-4k
  • viewsonic-ls901-4k
  • viewsonic-ls901-4k
  • viewsonic-ls901-4k
  • viewsonic-ls901-4k
  • viewsonic-ls901-4k
  • viewsonic-ls901-4k
  • viewsonic-ls901-4k
viewsonic-ls901-4k
viewsonic-ls901-4k
viewsonic-ls901-4k
viewsonic-ls901-4k
viewsonic-ls901-4k
viewsonic-ls901-4k
viewsonic-ls901-4k
viewsonic-ls901-4k
viewsonic-ls901-4k
Where to buy
*As an Amazon Associate, we earn from qualifying purchases.
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
Loading category ranking...

Technical Specifications of projector ViewSonic LS901-4K

Technical score
Technical score
7.8/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 91% of models
Score components:

42%

9.0

Image Quality

22%

6.6

Projection & Lens

12%

7.2

HDMI & Gaming

10%

7.0

Audio & Features

8%

6.1

Connectivity

6%

8.0

Design & Power

7.8
Reviews score
7.8
List score
?
Value for money
Value for money
5.6/ 10
✕
What it is
An indicator that combines the projector's overall rating with its cost.
When it matters
When you are looking for a projector with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 89% of models
Score components:

70%

7.6

Overall score

30%

1.0

Price

5.6
ANSI lumens
5,500
Market range: <250 – >4k
This projector reaches 5,500 ANSI lumens, brighter than 96.3% of projectors and equal to 0.2% of projectors.
Contrast ratio
3,000,000:1
This projector has a contrast ratio of 3000000:1, higher than 93.1% of projectors and equal to 4.5% of projectors.
Native panel resolution
3840x2160
This projector uses a native resolution of 3840x2160, higher than 91.1% of projectors and equal to 4.7% of projectors.
Output resolution
3840x2160
This projector supports output resolution up to 3840x2160, higher than 71.2% of projectors and equal to 24.6% of projectors.
Projection technology
DLP
Show more
Throw ratio
1.2-2.04:1
Min throw distance
0.8 m
Market range: <0.5 m – >2 m
This projector needs a minimum throw distance of 0.8 m, shorter than 69.8% of projectors and equal to 4.9% of projectors.
Max projection size
300 inch
Market range: <100 inch – >300 inch
This projector supports projection sizes up to 300 inch, larger than 51.5% of projectors and equal to 38% of projectors.
Zoom ratio
1.7
Market range: <1.1 – >2.1
This projector offers a zoom ratio of 1.7, wider than 81.8% of projectors and equal to 0.6% of projectors.
Motorized zoom
no
This projector does not have motorised zoom. 14.8% of projectors offer this.
Show more
Input lag
4.2 ms
Market range: <8 ms – >68 ms
This projector has input lag of 4.2 ms, lower than 92.2% of projectors and equal to 4.9% of projectors.
Auto low latency mode (ALLM)
no
This projector does not switch to low-latency mode automatically. 16.1% of projectors offer this.
Variable refresh rate (VRR)
no
This projector does not support variable refresh rate. 1.8% of projectors offer this.
HDMI version
2
This projector supports HDMI 2, more modern than 46.1% of projectors and equal to 35.9% of projectors.
Max HDMI bandwidth
18 Gbps
Market range: <10 Gbps – >50 Gbps
This projector supports HDMI bandwidth up to 18 Gbps, higher than 48.9% of projectors and equal to 39.7% of projectors.
Show more
N. of HDMI ports
2
Market range: <1 – >6
This projector has 2 HDMI port/s, more than 45.9% of projectors and equal to 47.3% of projectors.
Wi-Fi connectivity
no
This projector does not connect to Wi-Fi networks. 53.4% of projectors offer this.
Wi-Fi version
N/A
Bluetooth connectivity
no
This projector does not support Bluetooth. 50.7% of projectors offer this.
Bluetooth version
N/A
Show more
Smart TV features
no
This projector does not have built-in smart TV features. 43.9% of projectors offer this.
Operating system
?
Android OS
no
This projector does not run Android OS. 19.1% of projectors run Android OS.
Dedicated smartphone app
?
Remote control
yes
This projector includes a remote control. 1.5% of projectors offer this.
Show more
Light source type
laser
This projector uses laser light source technology, more advanced than 75.4% of projectors and equal to 24.6% of projectors.
Laser light source
yes
This projector has a laser light source. 73.3% of projectors offer this.
Lamp life
20,000 hours
Market range: <5k hours – >30k hours
This projector offers lamp life of 20,000 hours, shorter than 35.2% of projectors and equal to 25.8% of projectors.
Lamp life (eco mode)
30,000 hours
Market range: <5k hours – >30k hours
This projector offers eco-mode lamp life of 30,000 hours, shorter than 64% of projectors and equal to 31.9% of projectors.
Operating power consumption
245 W
Market range: <50 W – >400 W
This projector uses 245 W of power, more than 53.8% of projectors and equal to 0.8% of projectors.
Show more

ViewSonic LS901-4K vs the average projector

246810TotalImage QualityProjection & LensHDMI & GamingConnectivityAudio & FeaturesDesign & Power
  • 2.5x brighter image
    This projector has higher ANSI lumens than the average projector (5,500 vs 2,200). The average projector has 2,200 ANSI lumens.
    5,500 vs 2,200
  • Higher contrast ratio
    This projector has a higher contrast ratio than the average projector (3000000:1 vs 10000:1). The average projector has 10000:1 of contrast ratio.
    3,000,000:1 vs 10,000:1
  • High native resolution
    This projector has a higher native panel resolution than the average projector (3840x2160 vs 1920x1080). The average projector has a native panel resolution of 1920x1080.
    3840x2160 vs 1920x1080
  • Higher output resolution
    This projector supports a higher output resolution than the average projector (3840x2160 vs 1920x1080). The average projector outputs at 1920x1080 resolution.
    3840x2160 vs 1920x1080
  • Supports curved-surface correction
    This projector corrects warping on curved surfaces, while the average projector does not. 5.5% of projectors offer this.
  • 2.82x higher refresh rate
    This projector has a higher refresh rate than the average projector (240 Hz vs 85 Hz). The average projector has 85 Hz of refresh rate.
    240 Hz vs 85 Hz
  • Supports pixel shifting
    This projector supports pixel shifting, while the average projector does not. 26.6% of projectors support pixel shifting.
  • 0.4 2x wider zoom range
    This projector has a higher zoom ratio than the average projector (1.7 vs 1.3). The average projector has 1.3 of zoom ratio.
    1.7 vs 1.3
  • 2.5x brighter image
    This projector has higher ANSI lumens than the average projector (5,500 vs 2,200). The average projector has 2,200 ANSI lumens.
    5,500 vs 2,200
  • Higher contrast ratio
    This projector has a higher contrast ratio than the average projector (3000000:1 vs 10000:1). The average projector has 10000:1 of contrast ratio.
    3,000,000:1 vs 10,000:1
  • High native resolution
    This projector has a higher native panel resolution than the average projector (3840x2160 vs 1920x1080). The average projector has a native panel resolution of 1920x1080.
    3840x2160 vs 1920x1080
  • Higher output resolution
    This projector supports a higher output resolution than the average projector (3840x2160 vs 1920x1080). The average projector outputs at 1920x1080 resolution.
    3840x2160 vs 1920x1080
  • 2.82x higher refresh rate
    This projector has a higher refresh rate than the average projector (240 Hz vs 85 Hz). The average projector has 85 Hz of refresh rate.
    240 Hz vs 85 Hz
  • Supports pixel shifting
    This projector supports pixel shifting, while the average projector does not. 26.6% of projectors support pixel shifting.
  • 0.18 inch larger DMD chip
    This projector has a higher DMD chip size than the average projector (0.7 inch vs 0.47 inch). The average projector has 0.47 inch of DMD chip size.
    0.65 inch vs 0.47 inch
  • Wider color gamut
    This projector has a higher color gamut coverage than the average projector (125% Rec.709 % vs 99% Rec.709 %). The average projector has 99% Rec.709 % of color gamut coverage.
    125% Rec.709 % vs 99% Rec.709 %
  • Supports HLG
    This projector supports HLG, while the average projector does not. 41.2% of projectors support HLG.
  • 4 more recent release
    This projector was released more recently than the average projector (2025 vs 2021). The average projector was released in 2021.
    2,025 vs 2,021
  • Supports curved-surface correction
    This projector corrects warping on curved surfaces, while the average projector does not. 5.5% of projectors offer this.
  • 0.4 2x wider zoom range
    This projector has a higher zoom ratio than the average projector (1.7 vs 1.3). The average projector has 1.3 of zoom ratio.
    1.7 vs 1.3
  • 50 inch larger image size
    This projector has a higher projection size than the average projector (300 inch vs 250 inch). The average projector has 250 inch of projection size.
    300 inch vs 250 inch
  • 0.21 m shorter throw distance
    This projector has a lower throw distance than the average projector (0.8 m vs 1 m). The average projector has 1.0055 m of throw distance.
    0.8 m vs 1.0055 m
  • 22.8 ms lower input lag
    This projector has a lower input lag than the average projector (4.2 ms vs 27 ms). The average projector has 27 ms of input lag.
    4.2 ms vs 27 ms
  • More modern HDCP support
    This projector supports a newer HDCP version than the average projector (2.3 vs 2.2).
    2.3 vs 2.2
  • 1 more RJ45 ports
    This projector has more RJ45 ports than the average projector (1 vs 0). The average projector has 0 RJ45 ports.
    1 vs 0
  • VGA input included
    This projector supports VGA input, while the average projector does not. 44.1% of projectors support VGA input.
  • Includes stereo speakers
    This projector has stereo speakers, while the average projector does not. 47.8% of projectors have stereo speakers.
  • 50% stronger audio output
    This projector has a higher audio output power than the average projector (15 W vs 10 W). The average projector has 10 W of audio output power.
    15 W vs 10 W
  • Laser light source
    This projector has a laser light source, while the average projector does not. 26.7% of projectors have one.
  • 3 dB quieter eco mode
    This projector has a lower audible noise in eco mode than the average projector (25 dB vs 28 dB). The average projector has 28 dB of audible noise in eco mode.
    25 dB vs 28 dB
  • 10,000 hours longer eco lamp life
    This projector has a higher lamp life in eco mode than the average projector (30,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life in eco mode.
    30,000 hours vs 20,000 hours
  • No Wi-Fi connectivity
    This projector does not connect to Wi-Fi networks, while the average projector does. 53.4% of projectors offer this.
  • 43 % less vertical lens shift
    This projector has fewer vertical lens shift than the average projector (21 % vs 64 %). The average projector has 64 % vertical lens shift.
    21 % vs 64 %
  • No Bluetooth connectivity
    This projector does not support Bluetooth, while the average projector does. 50.6% of projectors offer this.
  • Limited HDMI format
    This projector supports a less capable max HDMI input format than the average projector (4K/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.
    4K/60Hz vs 4K/120Hz
  • 3.42x more expensive
    ViewSonic LS901-4K is more expensive than the average projector (£2,260 vs £660).
    £2,260 vs £660
  • 23.7% worse value for money
    ViewSonic LS901-4K has a lower value-for-money score than the average projector (5.62 vs 6.9).
    5.62 vs 6.95
  • 62.8% heavier weight
    This projector is heavier than the average projector (4.9 kg vs 2.98 kg). The average projector weighs 2.98 kg.
    4.85 kg vs 2.98 kg
  • 130 mm thicker body
    This projector is thicker than the average projector (280 mm vs 150 mm). The average projector has a thickness of 150 mm.
    280 mm vs 150 mm
  • 3.42x more expensive
    ViewSonic LS901-4K is more expensive than the average projector (£2,260 vs £660).
    £2,260 vs £660
  • 23.7% worse value for money
    ViewSonic LS901-4K has a lower value-for-money score than the average projector (5.62 vs 6.9).
    5.62 vs 6.95
  • 43 % less vertical lens shift
    This projector has fewer vertical lens shift than the average projector (21 % vs 64 %). The average projector has 64 % vertical lens shift.
    21 % vs 64 %
  • Limited HDMI format
    This projector supports a less capable max HDMI input format than the average projector (4K/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.
    4K/60Hz vs 4K/120Hz
  • No Wi-Fi connectivity
    This projector does not connect to Wi-Fi networks, while the average projector does. 53.4% of projectors offer this.
  • No Bluetooth connectivity
    This projector does not support Bluetooth, while the average projector does. 50.6% of projectors offer this.
  • 62.8% heavier weight
    This projector is heavier than the average projector (4.9 kg vs 2.98 kg). The average projector weighs 2.98 kg.
    4.85 kg vs 2.98 kg
  • 130 mm thicker body
    This projector is thicker than the average projector (280 mm vs 150 mm). The average projector has a thickness of 150 mm.
    280 mm vs 150 mm

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Overview video
Brand video

Third-party reviews

What customers like about ViewSonic LS901-4K

  • 3840x2160 native panel gives sharp 4K detail.
  • 5500 ANSI lumens works in a room with the lights on.
  • Zoom ratio of 1.7 gives more room to place it.
  • 240 Hz refresh rate keeps fast motion smooth.
  • Stereo speakers add width to the sound.
  • Vertical lens shift of 21 % lines up the picture without tilting it.

What customers don't like about ViewSonic LS901-4K

  • The body is 280 mm thick, so it needs a deep shelf or a stand.
  • Focus and zoom are both set by hand.
  • Only one USB port limits what you can connect.
  • Normal mode noise of 31 dB is audible in a quiet room.

Verdict

A large wall is the setting for the ViewSonic LS901-4K, which combines 4K sharpness with 5500 ANSI lumens from a laser. The 1.7 zoom ratio gives more room to place it, and the 0.8 m minimum throw suits a small room. Its 240 Hz refresh rate and 4.2 ms input lag keep fast scenes smooth and controls responsive. Eco mode brings the noise down to 25 dB, and the stereo speakers widen the sound. A vertical lens shift of 21 % lines up the picture without tilting the body, and it can hang from a ceiling. The body is 280 mm thick, so it needs a deep shelf or a stand, and focus and zoom are set by hand. It suits a buyer with a dedicated room who wants 4K and fast response.

Compare ViewSonic LS901-4K with other products in the Projectors category

1Product to compare no. 1
VS
2Product to compare no. 2
VS
3Product to compare no. 3 (optional)

Graphic comparison of ViewSonic LS901-4K and other products in the Projectors category

No results found