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Product comparison · 2 data projectors

Acer K138ST + 3Y Carry-In vs Viewsonic LightStream PJD6552LW

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  • 40specifications compared
  • 23differ
  • 17identical
  • 43known for one product only

Key differences

  • Projector brightness
    • 800 ANSI lumens
    • 3500 ANSI lumens
  • Screen size compatibility
    • 635 - 2540 mm (25 - 100")
    • 762 - 7620 mm (30 - 300")
  • Keystone correction, vertical
    • -20 - 20°
    • -30 - 30°
  • Service life of light source
    • 20000 h
    • 4000 h
  • Service life of light source (economic mode)
    • 30000 h
    • 10000 h
  • Digital zoom
    • 1.7x
    • 2x
  • Throw ratio
    • 0.8:1
    • 1.21 - 1.57:1
  • VGA (D-Sub) ports quantity
    • 1
    • 3

Side by side

Differences highlightedShow differences only
83 specifications
A

Acer

K138ST + 3Y Carry-InView product
B

Viewsonic

LightStream PJD6552LWView product
Projector3 differ
Projector brightnessDiffers800 ANSI lumens3500 ANSI lumens
Projection technologyDLPDLP
Projector native resolutionWXGA (1280x800)WXGA (1280x800)
Native aspect ratio16:1016:10
Screen size compatibilityDiffers635 - 2540 mm (25 - 100")762 - 7620 mm (30 - 300")
Number of colours1.073 billion colours1.073 billion colours
Keystone correction, horizontalKnown for one-30 - 30°
Keystone correction, verticalDiffers-20 - 20°-30 - 30°
Contrast ratio (typical)Known for one100000:1
Supported aspect ratiosKnown for one4:3, 16:9, 16:10
Projection distanceKnown for one0.4 - 1.7 m
Vertical scan rangeKnown for one50 - 120 Hz
Horizontal synchronization (max)Known for one100 kHz
Horizontal synchronization (min)Known for one30 kHz
Vertical synchronization (max)Known for one120 kHz
Vertical synchronization (min)Known for one50 kHz
Light source2 differ
Light source typeKnown for oneLamp
Service life of light sourceDiffers20000 h4000 h
Service life of light source (economic mode)Differs30000 h10000 h
Lamp powerKnown for one210 W
Lamps quantity1 lamp(s)1 lamp(s)
Lens system2 differ
Digital zoomDiffers1.7x2x
Optical zoomKnown for one1.3x
Throw ratioDiffers0.8:11.21 - 1.57:1
OffsetKnown for one120%
FocusKnown for oneManual
Videoidentical
Analog signal format systemKnown for oneNTSC, PAL, PAL 60, SECAM
Full HDNoNo
3DYesYes
3D ReadyKnown for oneYes
Ports & interfaces4 differ
VGA (D-Sub) ports quantityDiffers13
HDMI ports quantity11
Component video (YPbPr/YCbCr) inDiffers01
Composite video inDiffers01
DVI portKnown for oneNo
S-Video inputs quantityDiffers01
USB 2.0 ports quantity11
Audio (L/R) inKnown for one1
Audio (L/R) outKnown for one1
Microphone inKnown for oneYes
Serial interface typeKnown for oneRS-232
AC (power) inKnown for oneYes
Network2 differ
Ethernet LANDiffersNoYes
Ethernet LAN (RJ-45) portsDiffers01
Wi-FiKnown for oneNo
Features2 differ
Noise levelDiffers33 dB32 dB
Noise level (economic mode)Differs29 dB27 dB
Preset modesKnown for oneBright, Cinema, Dynamic, Standard
On Screen Display (OSD)Known for oneYes
Password protectionKnown for oneYes
Multimedia2 differ
Built-in speaker(s)YesYes
Number of built-in speakersDiffers21
RMS rated powerDiffers6 W10 W
Design1 differ
Product typeDiffersPortable projectorStandard throw projector
Product colourWhiteWhite
PlacementKnown for oneDesktop, Ceiling
Market positioningKnown for onePortable
Displayidentical
Built-in displayNoNo
Power1 differ
Power sourceACAC
Power consumption (typical)Differs80 W265 W
Power consumption (standby)Known for one0.5 W
Power consumption (max)Known for one330 W
AC input voltage100 - 240 V100 - 240 V
AC input frequencyKnown for one50 - 60 Hz
Power consumption (economy mode)Known for one38 W
Operational conditions1 differ
Operating temperature (T-T)Differs5 - 40 °C0 - 40 °C
Operating relative humidity (H-H)Known for one10 - 90%
Operating altitudeKnown for one0 - 1499 m
Weight & dimensions1 differ
WeightDiffers750 g2.5 kg
WidthKnown for one315.2 mm
DepthKnown for one227.9 mm
HeightKnown for one97.7 mm
Packaging content1 differ
Remote control includedYesYes
Batteries includedYesYes
Cables includedDiffersACAC, VGA
Quick start guideYesYes
Carrying caseKnown for oneYes
ManualKnown for oneYes
Other features1 differ
RS-232 portsDiffers01
Maximum digital resolutionKnown for one1920 x 1080 pixels
Storageidentical
Card reader integratedKnown for oneNo
Softwareidentical
Windows operating systems supportedKnown for oneYes
Mac operating systems supportedKnown for oneYes

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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