On average Optoma 3000:1 contrast ratio projectors have good reviews compared to other manufacturers as do all multimedia projectors manufactured by Optoma.
The Optoma EX685 supports 3D, which is unusual. Most of the other similar spec projectors that have been on the market for around the same time as the EX685 do not support 3D.
Other projectors which support 3D currently available that you might also want to look at include because of it's better review score, the NEC NP-M311W[plb_1525270_price].
Has a Built-In Speaker(s)
The Optoma EX685 has a built-in speaker(s), as do most of the other projectors of a similar age and spec to the EX685.
We think you might also be interested in some of the alternative data projectors with a built-in speaker(s) currently available including because of it's better review score, the Epson EB-425W[plb_1844228_price].
1600 X 1200 (UXGA) Supported Graphics Resolutions
This projector supports a supported graphics resolutions of 1024 x 768 (XGA)|1280 x 1024 (SXGA)|1280 x 720 (HD 720)|1280 x 768 (WXGA)|1600 x 1200 (UXGA)|640 x 480 (VGA)|800 x 600 (SVGA), which is typical of many multimedia projectors of this age and spec.
Three VGA (D-Sub) Ports Quantitys
The Optoma EX685 is a three VGA (D-Sub) ports quantity projector.
Very Big Offset
Projectors of this spec and age have offsets of between 9.5% and 130%, and the average offset is 88%. When compared to other comparable spec multimedia projectors that are a similar age to the EX685, the Optoma EX685's offset of 128.5 percent is one of the biggest.
+4 More reasons for
Fairly Big Bulb Power
With a bulb power of 280 Watts, the Optoma EX685 has one of the bigger bulb powers amongst 3000:1 contrast ratio projectors of this age. Similar spec multimedia projectors that have been available for around the same time as the EX685 have bulb powers of between 140W and 400W, and the average bulb power is 240W.
Very Quiet Noise Level
The Optoma EX685 has a quite quiet noise level (only 30 decibels) compared to most of the other multimedia projectors of a comparable age and type to the EX685. The noise levels of projectors of this spec and age range from 26dB to 45dB.
Alternative projectors with a louder noise level that you might want to look at include the NEC UM280[plb_1467924_price] (28dB).
100V AC Input Voltage
This multimedia projector has a 100 - 240V AC input voltage, which is typical of many projectors of a similar type and age to it.
10 Reasons Against
Does Not Support Full HD
Most projectors of a comparable spec and age to the EX685 do not support full HD. The Optoma EX685 is no exception to this as it too does not support full HD.
There are a number of other multimedia projectors which also support full HD which you might want to look at including the Epson 475Wi[plb_1778250_price], or the Hitachi CP-WX8255A[plb_1884022_price] which is also higher rated.
Does Not Support Wi-Fi
Like most of the other projectors of this spec and age, the Optoma EX685 does not support wi-Fi.
We compared this data projector to all the other projectors with a wi-Fi and we think the EB-425W[pl_1844228_price], or the BrightLink 436Wi[pl_1875520_price] both from Epson which also has a higher rating is also worth considering.
Only Fixed Zoom Ratio
This projector supports a Fixed zoom ratio, which is typical of many projectors of this age and type.
Quite Short Service Life of Lamp (economic Mode)
The shortest service life of lamp (economic mode) of 3000:1 contrast ratio projectors that are a comparable age to the EX685 is 230h and the longest is 20,000h. At only 3,000 hours, the Optoma EX685 has a quite short service life of lamp (economic mode) compared to most of the other data projectors of this spec and age.
+7 More reasons against
Very Short Service Life of Lamp
With a service life of lamp of only 2,500 hours, the Optoma EX685 has one of the shorter service life of lamps amongst projectors of this age. Across all the 3000:1 contrast ratio projectors that have been on the market for around the same time as the EX685 the service life of lamps range from 1,500h to 30,000h, and the average service life of lamp is 4,400h.
Very Small Uniformity
The uniformitys of 3000:1 contrast ratio projectors that have been available for more than two years range from 80% to 85%, and the average uniformity is 84%. At only 80 percent, the Optoma EX685 has a quite small uniformity compared to most of the other 3000:1 contrast ratio projectors that were released around the same time as the EX685.
Only One USB 2.0 Ports Quantity
Most projectors of this age and type have between one and two USB 2.0 ports quantitys, including the Optoma EX685 which has one USB 2.0 ports quantity.
With a weight of 7.6 kilograms, the Optoma EX685 is fairly heavy compared to most of the other multimedia projectors of a similar type and age to the EX685. The weights of comparable spec data projectors that have been around for around the same time as the EX685 range from 230g to 30kg, and the average weight is 4.9kg.
Very High Power Consumption (PowerSave)
The average power consumption (PowerSave) of multimedia projectors of this spec and age is 170W, and the power consumption (PowerSave)s range from 0.1W to 330W. When compared to other projectors of this spec and age that we have checked, the Optoma EX685's power consumption (PowerSave) of 325 Watts is one of the highest.
Very Small Matrix Size
3000:1 contrast ratio projectors that have been around for a comparable time to the EX685 have matrix sizes of between 0.55" and 0.75". The Optoma EX685 has a quite small matrix size (only 0.55 inches) compared to most of the other 3000:1 contrast ratio projectors that have been available for around the same time as the EX685.
3 Other reasons to consider the Optoma EX685
Released Over Four Years Ago
This projector has been on the market for over four years.
Average Projector Brightness
The Optoma EX685 has a pretty average projector brightness (3,000 ANSI lumens) compared to most of the other data projectors of a comparable age and type to the EX685.
If this Optoma multimedia projector projector brightness is not bright enough for you then you might want to look at the Optoma TW610STi[plb_1749808_price] (3,100 ANSI lumens) which also has a higher rating.
XGA (1024x768) Projector Native Resolution
The highest resolution of the Optoma EX685 is XGA (1024x768). That's 23% less resolution than the most common projector native resolution of WXGA (1280x800).
+1 Other reason
Contrast Ratio (typical)
Projector Native Resolution
3,000 ANSI lumens
Maximum Digital Resolution
1600 x 1200
Keystone Correction, Vertical
Number of Colours
0.5 - 0.8
Supported Aspect Ratios
Screen Size Compatibility
60.10 - 84.93
Native Aspect Ratio
Number of Colours
1.073 billion colours
Service Life of Lamp (economic Mode)
Service Life of Lamp
Aperture Range (F-F)
Focal Length Range (f-F)
Supported Graphics Resolutions
1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1280 x 768 (WXGA), 1280 x 768, 1600 x 1200 (UXGA), 640 x 480 (VGA), 800 x 600 (SVGA)
Supported Video Modes
Analog Signal Format System
NTSC, NTSC, NTSC 3.58, NTSC, NTSC 4.43, NTSC, NTSC M, PAL, PAL, PAL B, PAL, PAL D, PAL, PAL G, PAL, PAL H, PAL, PAL I, PAL, PAL M, PAL, PAL N, SECAM, SECAM, SECAM B, SECAM, SECAM D, SECAM, SECAM G, SECAM, SECAM K, SECAM, SECAM K, SECAM K1, SECAM, SECAM L
Ports & Interfaces
S-Video Inputs Quantity
Serial Interface Type
Audio (L,R) in
Composite Video in
USB 2.0 Ports Quantity
Ethernet LAN (RJ-45) Ports
HDMI Ports Quantity
VGA (D-Sub) Ports Quantity
AC (power) in
Composite Video Out
Card Reader Integrated
Noise Level (economic Mode)
Horizontal Scan Range
15 - 91
Vertical Scan Range
25 - 85
On Screen Display (OSD) Languages
ARA, CZE, DAN, DEU, DUT, ENG, ESP, FIN, FRE, GRE, HUN, ITA, NOR, POL, POR, RUM, RUS, SWE, TUR
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Total running cost over 5 years
Running costs for this projector have been estimated based on other similar projectors. If you know how much electricity and water the Optoma EX685uses then please let us know by entering those figures in the boxes above.
Running this projector over 5 years will generate 0.6 tonnes of carbon dioxide (CO2).
To offset that much CO2 you would need to plant 16 tree seedlings and grow them for 10 years.
Previous and future annual running costs of the Optoma EX685 assuming future electricity price inflation of 0.0600% per year. Edit inflation assumptions