leica|SKU:54-50511

Leica Calonox 2 Sight 50511 — No-Calibration Thermal Sighting Camera

Zero-Calibration Thermal Sighting — Ready Out of the Box

No rifle calibration — Swap between rifles out-of-the-box
LYNRED thermal sensor — European sensor with LIO™ processing
10-hour battery life — Full night hunts on a single charge
Sighting and observation — Dual-use capability in one device
Rugged silicone armoring — Fiberglass-reinforced plastic housing
  • Free Shipping -- Fully insured, signature required on optics over $500
  • Free Pre-Purchase Consult -- Technical optics expert for reticle and mount pairing
  • Authorized Dealer Warranty -- Full manufacturer warranty, no gray market

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  • Leica Calonox 2 Sight 50511 thermal sighting camera
Leica Calonox 2 Sight 50511
Leica Calonox 2 Sight 50511 — No-Calibration Thermal Sighting Camera
$0.00

Zero-Calibration Thermal Sighting — Ready Out of the Box

The Leica Calonox 2 Sight 50511 is a precision-built thermal sighting camera designed entirely in Germany for hunters who demand zero-retention reliability without rifle-specific calibration. Its LYNRED sensor and Leica Image Optimization deliver a sharp, high-contrast thermal picture with a large field of view — critical when tracking moving game in low light. Ready within seconds of power-on and field-tested for up to 10 hours on a single charge, this dual-use device earns its spot on any wilderness-grade night hunting setup. Swap it between rifles with no re-zero required.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
Made in Germany
No Calibration Needed
10-Hour Battery Life
Dual-Use Capability
10 hrs
Battery Life
Germany
Design & Manufacture
<3 sec
Startup Time
Swap Rifles Without Recalibrating in the Field

Swap Rifles Without Recalibrating in the Field

Most thermal units lock you into one rifle with factory calibration that shifts after hard use — exactly the kind of field failure that costs you a shot when a hog steps out at 200 yards on a cold December night. The Calonox 2 Sight eliminates that problem entirely. No rifle-specific calibration means you pull it off one rifle, mount it on another, and it's ready within seconds. At Hunt Premium, we don't list optics we wouldn't bet a $3,000 tag on — and a thermal that requires recalibration every time you change platforms doesn't earn its spot in our catalog. This one does.

LYNRED Sensor Delivers Detail When Light Doesn't Exist

LYNRED Sensor Delivers Detail When Light Doesn't Exist

The Calonox 2 Sight pairs a European LYNRED sensor with Leica's LIO™ image processing — not marketing software, but the same processing Leica has refined across years of field-proven optical engineering. The result is a thermal image rich in contrast and detail that lets you distinguish target from background at distances where lesser thermal units show nothing but a blurry heat blob. For night hunters scanning timber edges or open pastures in complete darkness, that detail difference is what separates a confident ethical shot from a guess. The large field of view keeps you oriented when tracking moving animals through heavy cover.

Built for All-Night Stands in Rough Conditions

Built for All-Night Stands in Rough Conditions

The fiberglass-reinforced plastic housing wrapped in silicone armoring handles the kind of field abuse that ends nights early — bumps against tree stands, drops onto frozen ground, rain on a long vigil. USB-C charging from a power bank or vehicle means you top off between stands without carrying proprietary chargers. Up to 10 hours of battery life covers a full evening-to-morning sit without swapping batteries mid-hunt. The compact form factor pairs cleanly with rifles like the Leica Fortis 1.8-12 x 42 i, keeping your setup balanced and maneuverable in tight quarters. This is season-proven thermal hardware built around the reality of how night hunters actually work.

Mount Compatibility

The Calonox 2 Sight attaches via standard threaded adapter mounts. Confirm your riflescope or mounting system accepts one of the following thread pitches before ordering.

  • Riflescope or adapter with M52 x 0.75 threaded interface
  • Riflescope or adapter with M43 x 0.75 threaded interface
  • Compatible with Leica Fortis 1.8-12 x 42 i riflescope (verified pairing)

Built For How You Hunt

A dual-use thermal that transitions from observation to sighting without switching devices.

Night Hunting
Pre-Dawn Glassing
Tracking Moving Game
Multi-Rifle Swapping

Full specifications

Full specifications12 data points across 4 categories

Dimensions

Thread Mount (Option 1)M52 x 0.75
Thread Mount (Option 2)M43 x 0.75

Power & Performance

SensorLYNRED European sensor
Image ProcessingLeica Image Optimization – LIO™
Battery LifeUp to 10 hours
StartupReady within seconds of switching on
ModesDay / Night mode selection

Materials

OriginEntirely designed & made in Germany
ConstructionLight and compact

Compliance & Warranty

Operating Temperature (Charged Battery)+10 °C to +30 °C (50°F to 86°F)
Charging OptionsUSB-C, household plug, power bank, car (cigarette lighter)
Legislation NotePlease observe relevant national legislation

The Hunt Premium Promise

Every optic we carry is vetted for real-field performance. Here's what you get when you buy from us.

Authorized DealerFull manufacturer warranty honored on every product. No gray-market risk, no voided warranties.
Free ShippingShips free with full insurance. Signature required on all optics orders.
Free Pre-Purchase ConsultTalk to a technical optics expert before you buy — mount pairing, reticle guidance, and application fit.
★★★★★
“I run the Calonox 2 on two rifles — a .300 BLK for hogs and a 6.5 Creed for predators. Being able to swap it between guns without recalibrating sold me. Third night out, I had a boar step into a sendero at 180 yards in complete darkness. The LIO processing let me see enough detail to place the shot clean. Ten hours on a single battery means I'm not fumbling with spares in the dark.”
T
Travis L.Bryan, TX

The new Leica Calonox 2 Sight 50511 thermal sighting camera is not just a further development – it’s a genuine benchmark in terms of design and function. Completely designed and made in Germany, it wins users over with its compact ergonomic shape and practical, intuitive operation – it’s very easy, for example, to select day or night mode. The high-quality European sensor from LYNRED, together with Leica’s proven image processing software (Leica Image Optimization – LIO™) ensures even sharper images, rich in contrast and detail. What’s more, the Calonox 2 Sight no longer needs individual calibration, but can be used out-of-the-box and swapped between rifles.

Attention: Please observe relevant national legislation.

  • The Essentials:
  • Entirely designed & made in Germany
  • Light and compact construction
  • No rifle calibration needed (out-of-the-box use)
  • Large field of view and very detailed image, optimum viewing comfort
  • Extremely easy operation with a few intelligent buttons
  • Ready for use within seconds of switching onAdapter mount with M52 x 0.75 thread.
  • Up to 10 hours battery life
  • Compact unit e.g. with the all-round riflescope Leica Fortis 1.8-12 x 42 i for
    night hunting
  • Dual-use capability: sighting and observation device
  • Adapter mounting with M43 x 0.75 thread

SPECIFICATIONS:
Sensor Type: VOx
Sensor Size: 640 x 840 pixels
Pixel Size: 12 µm
Screen Type: OLED
Screen Diagonale: 0.49”, active area 0.35”
Screen Resolution: 1280 x 960 pixels
Image Repetition Frequency: 60 Hz
Lens Focal Length: 42mm/1.1
Thermal sensitivity NETDh: < 40 mK
Optical Basic Magnification: 1x
Digital Zoom: 1x/2x temporary
Field of View: 10.3° x 7.7° (18 x 13.5 m/100 m)
Diopter Adjustment: No
Acquisition range/Resolution 
(Calculated for 1.7m x 0.5m (66.9 inch x 20.0 inch):
2,210 m/2 px (2,417 yrd/2 px)
Detection range/Resolution 
(Calculated for 1.7m x 0.5m (66.9 inch x 20.0 inch):
770 m/6 px (842 yrd/6 px)
Identification range/Resolution 
(Calculated for 1.7m x 0.5m (66.9 inch x 20.0 inch):
390 m/12 px (427 yrd/12 px)
Adjustment Reticle Correction: not necessary
Video Output: Wi-Fi, USB-C
Video Recording: yes
Video/Picture resolution: 640 x 480 px
Cable Socket: USB-C
Wireless Connection: WiFi (2.4 GHz) + Bluetooth®
Internal Memory: 32 GB
Protection Class: IP 67, nitrogen-filled
Operating Temperature: -20 °C to +50 °C (-4°F to 122°F)
Operating Temperature (Charged Battery): +10 °C to +30 °C (50°F to 86°F)
Battery Life: approx. 8 — 11 h
Battery: 2x 2,420 mA/h not removable
Charging optionsy: USB-C, household plug, power bank, car (cigarette lighter)
Accessory Thread: M43x0.75
Tripod Thread: A ¼ DIN 4503 (¼”), M4 standard thread
Material: fiberglass-reinforced plastic with silicone armoring
Dimensions: 139 x 90 x 61 mm (5.5 x 3.5 x 2.4 in)
Weight (with Battery): approx. 590 g (20.8 oz)
SKU: 50511

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Frequently Asked Questions

The Calonox 2 Sight is entirely designed and manufactured in Germany with a European LYNRED sensor and Leica's LIO™ image processing — not off-the-shelf components assembled overseas. The no-calibration, swap-between-rifles capability alone eliminates the single biggest frustration with clip-on thermal units. You're paying for German engineering, proven image processing, and the ability to move this optic between platforms without returning to a range. At Hunt Premium, we carry it because it earns its spot against the alternatives through actual field performance, not spec sheets. Contact us for a pre-purchase consult to compare it against other options for your specific night hunting setup.
Yes. Hunt Premium is an authorized dealer for every brand we carry, including Leica. That means your Calonox 2 Sight ships with the full manufacturer warranty — no gray-market risk, no voided coverage if something fails down the line. When you're investing in German-built thermal optics, authorized dealer status isn't a footnote. It's the difference between a warranty that's actually honored and a $2,000+ paperweight if the unit malfunctions. Every product page on our site confirms this, and our team can verify your warranty registration before and after purchase.
That's the core advantage of this unit. The Calonox 2 Sight requires no rifle-specific calibration — it works out-of-the-box and can be swapped between rifles with an M52 x 0.75 or M43 x 0.75 adapter mount without returning to a range or running through a calibration routine. If you run two different rifles for hogs and predators, or swap between a dedicated night gun and a day rifle, this unit moves between them without losing zero or requiring adjustment. That's a significant time-saver for hunters who don't want to dedicate one thermal to one platform permanently.
The Calonox 2 Sight is ready for use within seconds of switching on. Combined with the no-calibration design, that means from a cold start to identifying a target is faster than any clip-on thermal that requires a warm-up period or boot-up calibration cycle. For night hunters, those seconds matter when an animal appears suddenly at the edge of a food plot or cuts across a sendero. You're not waiting on your equipment — it's waiting on you.
With a charged battery, the Calonox 2 Sight operates between 50°F and 86°F (10°C to 30°C). That covers the vast majority of night hunting conditions during spring hog seasons and fall predator calling windows across most of the United States. For extreme cold deployments, USB-C charging from a vehicle or power bank lets you manage battery thermals in the field. The fiberglass-reinforced housing with silicone armoring handles the physical demands of those conditions — rain, bumps against stands, and rough handling — regardless of the temperature you're hunting in.
The Calonox 2 Sight charges via USB-C — the same standard your phone and other field electronics use. That means you can charge from a household plug, a power bank between stands, or your vehicle's cigarette lighter port. No proprietary charger to lose, break, or forget at camp. With up to 10 hours of battery life, a single power bank in your pack covers multiple nights without needing wall power. For backcountry night hunters running multiple stands in a single session, USB-C compatibility keeps you powered without the logistical headache of specialized charging equipment.
Yes. The Calonox 2 Sight has dual-use capability — it functions as both a sighting device mounted to your rifle and a handheld observation thermal. For scouting, locating animals before a stalk, or simply surveying a property at night without shouldering a rifle, you can use it off the rifle as a standalone thermal imager. That flexibility means you're not buying a single-purpose optic. It earns its spot in your pack on nights when you're glassing from a truck or a stand, not just when you're behind the trigger.
SKU: 54-50511 Categories: , Brand:

The Hunt Premium Promise

Every optic we carry is vetted for real-field performance. Here's what you get when you buy from us.

Authorized Dealer Full manufacturer warranty honored on every product. No gray-market risk, no voided warranties.
Free Shipping Ships free with full insurance. Signature required on all optics orders.
Free Pre-Purchase Consult Talk to a technical optics expert before you buy — mount pairing, reticle guidance, and application fit.

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