Nocpix Vista H35R review: a 640x512 handheld thermal with the rangefinder in the lens

By the OpticVerdict Editorial Team.
Research-based review · Updated 2026-10-08

How we reviewed it: a research-based review built from iRayUSA's “Nocpix VISTA Series” user's manual (the US edition, with H35R and H50R columns in its spec table), iRayUSA's H35R product page and spec table, Nocpix's global Vista series page, the OpticsPlanet listing and its one review. We found no independent hands-on test of the H35R to cite. We have not used this thermal ourselves; the score is our editorial opinion and the OpticsPlanet rating is shown attributed to its source. See how we evaluate.

Which Vista this is

The Vista line comes in a 50 mm and a 35 mm size. iRayUSA's own description says the original 50 mm model is now joined by a new 35 mm variant with a 3x native magnification, which it pitches for close and medium range hunting distances. This page covers that 35 mm model, the H35R, sold on OpticsPlanet as one Black offer under MPN VISTA-H35R. The H50R and S50R are separate models; nothing on this page describes them.

One warning if you compare spec sheets. OpticsPlanet's spec table for this listing gives 22.93 oz, 7.83 x 2.72 x 3.23 in and a field of view of 6.6 to 8.8 degrees. In iRayUSA's US manual those figures sit in the H50R column. The H35R column reads 22.58 oz and 7.48 x 2.64 x 3.11 in, with a 12.5° x 9.4° field of view, and those are the figures on this page. The listing's linear field of view, 65.71 ft at 100 yards, does match the H35R: it is what a 12.5° horizontal angle covers at 100 yards (our arithmetic).

The image: sensor, lens and field of view

iRayUSA's manual and spec table list a Nocpix 640 core: 640x512 at a 12 μm pixel size, 60 Hz, with a sensor sensitivity of ≤15 mK and Nocpix's Reality+ image processing. The lens is a 35 mm f/0.9 germanium objective you focus with a knob on the lens. Nocpix's global Vista series page says the F0.9 lens is designed to enhance light intake by 20% compared with traditional F1.0 lenses; that is the maker's claim, not a figure we have seen measured.

The base is 3x, and the field of view is 12.5° wide by 9.4° tall in the US manual (Nocpix's global page lists 12.5 x 10.0). At 100 yards, 12.5° covers about 66 feet side to side (our arithmetic). iRayUSA gives a detection range of 1,750 yards. Our note: detection means a heat source can show up on the screen, not that you can tell what it is, and neither the US manual nor iRayUSA's spec table gives a target size or a recognition distance for that figure.

Seven palettes are listed: White Hot, Black Hot, Red Hot, Color, Crimson, Viridian and Violet. The manual describes an Ultra-Clear mode that improves the image in inclement weather conditions such as rain, fog, high humidity or high temperatures, which all lower thermal contrast, and electronic image stabilization you switch on in the Settings menu. iRayUSA's spec table lists manual, automatic and semi-automatic non-uniformity correction.

A Nocpix film of the Vista series thermal monocular in use by a hunter, day and night, from the OpticsPlanet listing. The film covers the Vista series rather than this model, so the figures shown on screen are not quoted here; the specifications on this page come from iRayUSA's US manual and spec table.

Zoom and picture in picture

The digital zoom is stepped. From the home screen, a short press of the Up button toggles through 1x, 2x, 4x and 8x, and the status bar shows the total magnification; on the 3x base, the top step works out to 24x (our arithmetic). The manual describes the zoom as enlarging the image digitally; our note: it does not add sensor pixels. Picture in picture opens a small window at the top of the screen with a view at twice the total magnification, so you can keep the wide view in the main image while you look closer at a spot.

The rangefinder

The laser aperture is integrated into the objective lens, and the rangefinder cursor sits in the center of the screen. iRayUSA's manual rates it to measure objects up to 1,200 yards away with plus or minus 1 yard accuracy. It has two modes: single, which takes one reading and switches the laser off, and continuous, which refreshes the distance under the center cursor every second. Mode and distance appear in the upper-right corner of the screen, and the menu lets you set yards or meters.

The manual is plain about the limits: accuracy and maximum range depend on the reflectivity of the target surface, the angle at which the beam hits it and the weather, ranging can degrade in bright conditions or toward the sun, and a small target is harder to range than a large one. The US unit carries a Class 3R laser label (900 nm, pulsed, invisible), and the manual says not to stare into the laser, not to point it toward people or reflective objects, and not to target the eyes of people or animals. The manual's menus show no ballistic calculator.

Eyepiece and display

You look into a 1.03-inch round AMOLED with a 2560x2560 resolution, with 25 mm of eye relief and a diopter range of -4 to +6, according to iRayUSA. Nocpix's global Vista page adds an 8 mm exit pupil, a rotatable eye mask that it says prevents light leakage, and silent buttons for quiet use in the dark. The manual gives a start-up time of under 10 seconds, or instant from standby.

Batteries, power and recording

The Vista runs on Nocpix's IBP-7 lithium-ion pack (4400 mAh). iRayUSA's manual says the Vista comes with two of them, each rated for 5+ hours. Each pack has its own USB-C port, so a spare can charge on its own, and the monocular can also run from a 5V external supply such as a USB power bank; the manual says the Vista then runs from the external supply while the battery slowly charges. The accessory list in the manual includes a USB-C cable but no wall charger. In cold weather, the manual asks you to let an extremely cold battery warm up for about 45 minutes before charging it.

OpticsPlanet's package contents line lists only the monocular and a soft case with a cross-body strap, while the manual's accessory list adds the lens cap, the battery packs, the USB-C cable, a lens cloth and the manual. Confirm the box contents with the seller.

For recording, iRayUSA lists 64 GB of built-in storage with photo, video and audio capture. Over Wi-Fi, the free NOCPIX App takes real-time photos and videos, with or without audio, syncs the date and time and updates the firmware, according to the manual. Connected to a computer by the USB-C cable, the Vista shows up as a USB drive for copying files.

Size and build

iRayUSA gives 7.48 x 2.64 x 3.11 inches and 22.58 oz (about 640 g, our conversion). The housing is polymer with a rubber overmold, rated IP67, with an operating range of -4°F to 122°F. A 1/4-20 thread socket takes a quick-plate or tripod. iRayUSA's spec table lists the country of manufacture as China.

What the OpticsPlanet review says

OpticsPlanet shows 5.0/5 from 1 review, written on November 18, 2025 by a reviewer tagged Verified Owner. One voice is not a pattern, so the weight of this page is on iRayUSA's documents. The reviewer lists predators and hogs under best used for, lists no cons, and wrote:

“Very clear and great quality.”

Mule Skinner (GA), Verified Owner, via OpticsPlanet

Warranty and export

Nocpix USA's warranty page says that in the United States, Nocpix products are distributed and supported by iRayUSA, and iRayUSA lists a 5-year warranty for the H35R. Its manual says iRayUSA will repair or replace, at its discretion, an optic that becomes defective during normal use, and that if it cannot fix the optic in less than one week from receipt it will offer a replacement in like or better condition. The warranty follows the product and is not tied to the original owner, and the warranty period is tied to the date of sale to the dealer (Nocpix USA's warranty page says the date of sale to the dealer or end user registration). Opening, modifying or tampering with the unit voids the coverage, and the manual asks you to register it with iRayUSA.

The manual also carries this notice: these products may be subject to US export and foreign trade control laws and “may not be exported without prior approval of the U.S. Department of State.” Check your state and federal rules.

Trade-offs, plainly

• One OpticsPlanet review: there is no owner pattern to lean on yet.
• Stepped digital zoom (1x, 2x, 4x, 8x) rather than a smooth zoom; past the 3x base the image is enlarged digitally.
• The rangefinder gives distance only; the manual's menus show no ballistic calculator.
• OpticsPlanet's spec table lists the H50R's weight, size and angular field of view; use the manual's H35R figures when you compare.
• No wall charger in the manual's accessory list; you charge over USB-C from your own adapter, computer or power bank.
• Handheld design: the only mounting point iRayUSA lists is a 1/4-20 socket for a quick-plate or tripod.

Key specifications

Specifications are from iRayUSA's “Nocpix VISTA Series” user's manual (H35R column) and iRayUSA's H35R spec table unless the row names another source. The "Version carded" row is the OpticsPlanet listing's. The 24x total, the width of view at 100 yards and the gram figure are our arithmetic. No editorial award is claimed.

Should you buy it?

• Buy it if you want a 640x512 handheld for scanning fields and treelines at night that also tells you the distance to what you find, with two batteries to swap and onboard recording.
• Look at the RIX Titan T6 if you also want a hold correction: our RIX Titan T6 review covers a 640x480 handheld with a 1,312-yard rangefinder and a built-in ballistic calculator.
• Look at the ATN BlazeTrek 619 if you do not need a rangefinder: our best thermal monocular guide cards it as its best image detail pick with a 640x512 sensor.
• Want one thermal that also clips on in front of your day scope? Read our NiteHog Viper 35 review.

FAQ

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