3000:1 contrast ratio projectors manufactured by Optoma have good ratings on average compared to other brands. We also checked the reviews for all projectors (not just 3000:1 contrast ratio projectors) and found that Optoma also has good ratings across its entire range.
Supports 3D Image Projection
The Optoma EX685 supports 3D image projection. Most of the other 3000:1 contrast ratio projectors that were released more than two years ago do not support 3D image projection.
We compared this multimedia projector to all the other projectors which support 3D image projection and we think the NEC NP-M311W which has better reviews is also worth considering.
Has a Built-In Speaker
The Optoma EX685 has a built-in speaker, as do most of the other 3000:1 contrast ratio projectors that have been around for a similar time to the EX685.
1600 X 1200 (UXGA) Graphics Resolution
This projector supports a graphics resolution 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 type.
Three VGA (D-Sub) Ports
The Optoma EX685 has more VGA (D-Sub) ports than most of the projectors of a similar age and spec to the EX685. This projector is a three VGA (D-Sub) port multimedia projector compared to most of the comparable spec data projectors that were released more than two years ago which only have between one and two VGA (D-Sub) ports.
Very High Number of Colours
When compared to other 3000:1 contrast ratio projectors that have been around for around the same time as the EX685 that we have assessed, the Optoma EX685's number of colours of 1,070 million is one of the highest. Across all the projectors of a similar type and age to the EX685 the numbers of colours range from 1M to 1,100M.
+5 More reasons for
Very Big Offset
The average offset of projectors that have been available for more than two years is 88%, and the offsets range from 9.5% to 130%. At 128.5 percent, the Optoma EX685 has a very big offset compared to most of the other data projectors of this age and type.
Very Quiet Noise Level
The quietest noise level of 3000:1 contrast ratio projectors that came out more than two years ago is 26dB, the loudest is 45dB, and the average noise level is 35dB. With a noise level of only 30 decibels, the Optoma EX685 has one of the quieter noise levels amongst 3000:1 contrast ratio projectors of this age.
Other projectors with a louder noise level that you might want to look at include the Optoma EW695 (£1,195.42) (32dB).
Fairly Big Lamp Power
The Optoma EX685 has one of the bigger lamp power (280 Watts) amongst multimedia projectors of this age. 3000:1 contrast ratio projectors that have been available for more than two years have lamp power of between 140W and 400W, and the average lamp power is 240W.
100V AC Input Voltage
This projector has a 100 - 240V AC input voltage, which is the most commonly found AC input voltage on 3000:1 contrast ratio projectors that have been available for a comparable time to it.
10 Reasons Against
Does Not Support Full HD Projection
Most data projectors of a similar age and spec to the EX685 do not support Full HD projection. The Optoma EX685 is no exception to this as it too does not support Full HD projection.
We think you might also be interested in other projectors which also support Full HD projection including the Epson 475Wi (£1,632.80), or the Hitachi CP-WX8255A.
Does Not Support WiFi Connectivity
Most data projectors of this age and spec do not support WiFi connectivity. The Optoma EX685 is no exception to this as it too does not support WiFi connectivity.
Alternative data projectors which also support WiFi connectivity that you might want to consider include the NEC NP-UM330 which is also higher rated.
Only Fixed Zoom Ratio
This projector supports a Fixed zoom ratio, which is typical of many projectors that were released around the same time as it.
Very Short Service Life of Lamp in Economic Mode
Projectors that have been available for more than two years have service life of lamp in economic mode of between 230h and 20,000h. At only 3,000 hours, the Optoma EX685 has a quite short service life of lamp in economic mode compared to most of the other projectors that have been on the market for a comparable time to the EX685.
+7 More reasons against
Very Short Lamp Service Life
Across all the comparable spec projectors that have been available for more than two years the lamp service lives range from 1,500h to 30,000h. At only 2,500 hours, the Optoma EX685 has a fairly short lamp service life compared to most of the other data projectors of a comparable age and type to the EX685.
Very Small Uniformity
The average uniformity of multimedia projectors that have been around for around the same time as the EX685 is 84%. With a uniformity of only 80 percent, the Optoma EX685 has one of the smaller uniformities amongst similar spec projectors of this age.
Only One USB 2.0 Port
The Optoma EX685 is a one USB 2.0 port projector.
With a weight of 7.6 kilograms, the Optoma EX685 is fairly heavy compared to most of the other 3000:1 contrast ratio projectors that have been available for a comparable time to the EX685. The lightest 3000:1 contrast ratio projector that was released more than two years ago is 230g heavy and the heaviest is 30kg.
Very High Power Consumption During PowerSave
Across all the 3000:1 contrast ratio projectors that have been around for around the same time as the EX685 the power consumption during PowerSave range from 0.1W to 330W. With a power consumption during PowerSave of 325 Watts, the Optoma EX685's power consumption during PowerSave is one of the highest amongst projectors that were released more than two years ago.
Very Small Matrix Size
With a matrix size of only 0.55 inches, the Optoma EX685 has one of the smaller matrix sizes amongst projectors of this age. The smallest matrix size of projectors of this age and type is 0.55", the biggest is 0.75", and the average matrix size is 0.61".
4 Other reasons to consider the Optoma EX685
Running Costs Are Average
The EX685 has an average running cost of £121 over 1 year based on average usage levels and energy prices, which is typical compared to the other 92 data projectors that were released more than two years ago.
Released Over Three Years Ago
This multimedia projector was released over three years ago.
Average Projector Brightness
The Optoma EX685 has a fairly standard projector brightness (3,000 ANSI lumens) compared to most of the other projectors of this spec and age.
If you would prefer a brighter projector brightness then you might want to consider the Optoma TW610STi (3,100 ANSI lumens) which also has a higher rating.
+2 Other reasons
XGA (1024x768) Native Projector Resolution
The Optoma EX685 has a maximum resolution of XGA (1024x768). That's 23% less resolution than a WXGA (1280x800) multimedia projector, which is the most common resolution.
Native Projector Resolution
3,000 ANSI lumens
Maximum Digital Resolution
1600 x 1200
Vertical Keystone Correction
Number of Colours
0.5 - 0.8
Supported Aspect Ratio
Compatible Screen Size
60.10 - 84.93
Native Aspect Ratio
Supported Number of Colours Display
1.073 billion colours
Service Life of Lamp in Economic Mode
Lamp Service Life
Focal Length Range
3D Image Projection
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)
Full HD Projection
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
Serial Interface Type
Audio in Port
Composite Video in Port
USB 2.0 Port
Ethernet LAN (RJ-45) Port
VGA (D-Sub) Port
AC Power in
Composite Video Output Port
Ethernet LAN Connection
Integrated Card Reader
Noise Level in Economy Mode
Horizontal Scan Range
15 - 91
Vertical Scan Range
25 - 85
On Screen Display Language
ARA, CZE, DAN, DEU, DUT, ENG, ESP, FIN, FRE, GRE, HUN, ITA, NOR, POL, POR, RUM, RUS, SWE, TUR
@ £0.139 per kwh - Edit electricity price and usage
kwh per hour
kwh per hour left on standby
Electricity price £per kilowatt hour
Annual electricity price inflation %
Hide electricity usage and price
Water cost when switched on
@ £0.003474 per litre - Edit water usage and price
litres per hour
Water price £per litre
Annual water price inflation %
Hide water usage and price
Submit Energy Consumption Figures
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