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Product comparison · 2 data projectors

Acer Travel K138ST Standard throw projector 800 ANSI lumens DLP WXGA (1280x800) 3D White vs Epson PowerLite 1284 Standard throw projector 3200 ANSI lumens 3LCD WUXGA (1920x1200) Black

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  • 42specifications compared
  • 28differ
  • 14identical
  • 42known for one product only

Key differences

  • Projector brightness
    • 800 ANSI lumens
    • 3200 ANSI lumens
  • Projection technology
    • DLP
    • 3LCD
  • Projector native resolution
    • WXGA (1280x800)
    • WUXGA (1920x1200)
  • Contrast ratio (typical)
    • 100000:1
    • 15000:1
  • Supported aspect ratios
    • 4:3, 16:10, 16:9
    • 4:3, 16:9
  • Screen size compatibility
    • 635 - 2540 mm (25 - 100")
    • 762 - 7620 mm (30 - 300")
  • Projection distance
    • 0.4 - 1.7 m
    • 1.38 - 1.68 m
  • Keystone correction, vertical
    • -20 - 20°
    • -30 - 30°

Side by side

Differences highlightedShow differences only
84 specifications
A

Acer

Travel K138ST Standard throw projector 800 ANSI lumens DLP WXGA (1280x800) 3D White

Model K138ST

View product
B

Epson

PowerLite 1284 Standard throw projector 3200 ANSI lumens 3LCD WUXGA (1920x1200) Black

Model 1284

View product
Projector8 differ
Projector brightnessDiffers800 ANSI lumens3200 ANSI lumens
Projection technologyDiffersDLP3LCD
Projector native resolutionDiffersWXGA (1280x800)WUXGA (1920x1200)
Contrast ratio (typical)Differs100000:115000:1
Native aspect ratio16:1016:10
Supported aspect ratiosDiffers4:3, 16:10, 16:94:3, 16:9
Screen size compatibilityDiffers635 - 2540 mm (25 - 100")762 - 7620 mm (30 - 300")
Projection distanceDiffers0.4 - 1.7 m1.38 - 1.68 m
Projection distance (wide)Known for one1.38 - 1.38 m
Projection distance (tele)Known for one1.68 - 1.68 m
Number of colours1.073 billion colours1.073 billion colours
Colour light outputKnown for one3200 ANSI lumens
Keystone correction, horizontalKnown for one-30 - 30°
Keystone correction, verticalDiffers-20 - 20°-30 - 30°
Matrix typeKnown for one3-panel (p-Si TFT active)
White light outputKnown for one3200 ANSI lumens
Vertical scan rangeKnown for one50 - 120 Hz
Horizontal synchronization (max)Known for one100 kHz
Horizontal synchronization (min)Known for one30 kHz
Light source2 differ
Light source typeKnown for oneLamp
Service life of light sourceDiffers20000 h5000 h
Service life of light source (economic mode)Differs30000 h10000 h
Lamp typeKnown for oneUHE
Lamp powerKnown for one200 W
Lamps quantity1 lamp(s)1 lamp(s)
Lens systemidentical
FocusManualManual
Focal length rangeKnown for one20.42 - 24.5 mm
Aperture range (F-F)Known for one1.5 - 1.71
Zoom capabilityKnown for oneYes
Zoom typeKnown for oneManual
Digital zoomKnown for one1.7x
Throw ratioKnown for one0.8:1
Video3 differ
Analog signal format systemKnown for oneNTSC, NTSC 4.43, PAL, PAL 60, PAL M, PAL N, SECAM
Full HDDiffersNoYes
HD-ReadyKnown for oneYes
3DDiffersYesNo
3D ReadyDiffersYesNo
Supported graphics resolutionsKnown for one800 x 600 (SVGA), 1024 x 768 (XGA), 1152 x 864 (XGA+), 1280 x 1024 (SXGA), 1280 x 800 (WXGA), 1280 x 960, 1400 x 1050 (SXGA+), 1440 x 900, 1600 x 900, 1680 x 1050 (WSXGA+)
Ports & interfaces2 differ
VGA (D-Sub) ports quantity11
HDMI ports quantityDiffers12
Composite video inKnown for one1
USB 2.0 ports quantityDiffers12
Audio (L/R) inKnown for one1
USB connector typeKnown for oneUSB Type-A, USB Type-B
DC-in jackKnown for oneYes
AC (power) inKnown for oneYes
Networkidentical
Ethernet LANNoNo
Ethernet LAN (RJ-45) portsKnown for one0
Storageidentical
Card reader integratedKnown for oneNo
Features1 differ
Noise levelDiffers33 dB37 dB
Noise level (economic mode)29 dB29 dB
Multimedia2 differ
Built-in speaker(s)YesYes
Number of built-in speakersDiffers21
RMS rated powerDiffers3 W2 W
Design2 differ
Product typeStandard throw projectorStandard throw projector
Market positioningDiffersPortableHome cinema
Product colourDiffersWhiteBlack
PlacementDesktop, CeilingDesktop, Ceiling
Cable lock slotKnown for oneYes
Cable lock slot typeKnown for oneKensington
LED indicatorsKnown for oneYes
Displayidentical
Built-in displayNoNo
Power2 differ
Power sourceACAC
Power consumption (typical)Differs80 W291 W
Power consumption (economy mode)Differs38 W214 W
AC input voltage100 - 240 V100 - 240 V
AC input frequencyKnown for one50 - 60 Hz
Operational conditions2 differ
Operating temperature (T-T)Differs5 - 40 °C5 - 35 °C
Storage temperature (T-T)Known for one-10 - 60 °C
Operating relative humidity (H-H)Differs0 - 80%20 - 80%
Storage relative humidity (H-H)Known for one10 - 90%
Weight & dimensions4 differ
WeightDiffers750 g2.59 kg
WidthDiffers240 mm279 mm
DepthDiffers147 mm243.8 mm
HeightDiffers59 mm76 mm
Packaging contentidentical
Remote control includedYesYes
Batteries includedKnown for oneYes
AC adapter includedKnown for oneYes
Carrying caseKnown for oneYes
ManualKnown for oneYes
Quick start guideKnown for oneYes
Softwareidentical
Windows operating systems supportedKnown for oneYes
Mac operating systems supportedKnown for oneYes
Other featuresidentical
Maximum digital resolutionKnown for one1920 x 1080 pixels

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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