Side by side

Guide Orion O635CS vs Guide TD633 LRF

The Orion O635CS runs a 640×512 core at 12 µm behind a 35 mm lens; the TD633 LRF runs 640×512 at 12 µm behind 35 mm. The Orion O635CS is lighter by 3.2 oz. Approximate prices are ~$2,099 and ~$1,799.

How far you can see a person

Make out detailTell what it isSpot itMaker’s claim

Guide Orion O635CS640×512 · 12 µm · 35 mm

112 m make out detail182 m tell what it is729 m spot itmaker claims 1,800 m

Guide TD633 LRF640×512 · 12 µm · 35 mm

112 m make out detail182 m tell what it is729 m spot itmaker claims 1,800 m

501002005001k2k5k m

Calculated from the sensor's pixel pitch and the lens focal length, for clear air.

Spec	GuideGuide Orion O635CS	GuideGuide TD633 LRF
Published
Sensor	640×512	640×512
Pixel pitch	12 µm	12 µm
NETD	15 mK	20 mK
Refresh rate	50 Hz	50 Hz
Lens	35 mm	35 mm
Base magnification	1×	2×
Digital zoom	up to 1×	up to 16×
Field of view	12.5° horizontal	12.5° horizontal
Display	1920x1080 AMOLED	1280x960 AMOLED
Claimed detection	1,800 m	1,800 m
Claim basis	unspecified	unspecified
Run time	7 h	10 h
Battery type	Removable pack	18650
Weight	10.1 oz	13.3 oz
Length	3.9″	6.3″
Laser rangefinder	No	Yes
Ballistic calculator	No	No
Records video	No	Yes
Wi-Fi	No	Yes
IP rating	IP67	IP67
Warranty	5 years (10 years on sensor)	5 years (10 years on sensor)
Approx. price	~$2,099	~$1,799
Derived here
IFOV	0.343 mrad	0.343 mrad
Est. detection	729 m	729 m
Est. recognition	182 m	182 m
Est. identification	112 m	112 m
Claim ÷ estimate	2.5×	2.5×
Derived field of view	12.5°	12.5°
Pixels per degree	51.1	51.1
Where to buy	Guide →	Amazon →

Tinted rows are where these two differ. Prices are approximate.