Thermal imaging cameras are essentially low-resolution. The thermal core they use cannot decide up a tiny fraction of the variety of pixels you get on even an affordable standard digital camera sensor, and even fashions with QVGA (320-by-240) decision can value 1000’s of and are restricted to particular skilled functions. That’s why Flir, one of many main firms in thermal imaging, has caught to an 80-by-60 decision for its consumer-level Flir One digital camera cellphone equipment for years. That’s additionally what makes the $399.99 Flir One Pro stand out. It has a thermal decision of 160 by 120, quadrupling the variety of pixels it could seize. Combined with the flexibility to measure larger temperatures than the third-generation Flir One or the Flir One Pro LT, the Flir One Pro is by far probably the most highly effective mannequin but, and our Editors’ Choice.
Design
The Flir One Pro appears extra rugged than the marginally rounded, metallic silver-pink Flir One, with a barely chunky black physique and sharper angles that invoke a chunk of professional imaging tools. Despite the blockier look, it is practically the identical width and peak (2.7 by 1.4 inches) because the FlirOne, and solely a tenth of an inch deeper at 0.6 inches. Unless you could have a virtually extinct four-inch-screen cellphone, the Flir One Pro will seemingly be narrower than no matter you join it to.
Whether the model you decide is USB-C, micro USB, or Lightning, the connector sits in the course of the highest panel of the digital camera. It’s flush with the panel by default, however a mechanical wheel under the connector allows you to prolong it as much as an additional 0.3 inches, so it could work with practically any cellphone case. I had no downside connecting the Flir One Pro to a Google Pixel 3 XL even with the cellphone in a rugged case.

The backside fringe of the Pro holds an influence button and a USB-C port for charging with the included USB A-to-C cable (a wall adapter is not included). The digital camera makes use of its personal inside battery relatively than working off of your cellphone, so it has to remain charged to work. Flir says the digital camera can attain a full cost in 40 minutes and might last as long as an hour of thermal imaging. Besides the charging cable, the Flir One Pro comes with a tough, zip-up case for storage.
The entrance (or again, relying on the way you join it to your cellphone) panel holds the Flir One Pro’s two cameras, aligned with one on high of the opposite. One digital camera is the thermal core, a 160-by-120-resolution sensor that measures warmth via infrared emission. This is the center of the Pro, and one of the vital costly parts of the machine. The different digital camera is a traditional 1,440-by-1,080 visible digital camera, designed to work in tandem with the thermal core to supply photographs and movies of a lot larger decision than 160 by 120, via Flir’s Multi-Spectral Dynamic Imaging (MSX) function.
Flir App
The Flir One Pro requires the free Flir One app for Android and iOS to work. Once put in, turning the Pro on and plugging it into your cellphone allows you to begin thermal readings. The app’s fundamental display screen is a digital camera view that reveals a dwell feed from the Flir One Pro’s cameras in MSX mode.

While the Flir One Pro’s thermal core is a a lot larger decision than the 80-by-60 cores within the Flir One and Flir One Pro LT, it is nonetheless solely 160 by 120, and so will solely present broad blotches and obscure shapes by itself. That’s why Flir makes use of its MSX picture processing to mix the thermal picture with the bigger and extra detailed view of the visible digital camera. MSX analyzes the contours of objects the visible digital camera sees, and shows them as clear traces over the thermal picture that can assist you determine what you are .
Imaging Options
The MSX view could be switched to only thermal or simply visible views with a faucet on the menu that pops up from the decrease proper nook of the display screen. This menu additionally allows you to select from 9 totally different coloration palettes together with the default orange-and-purple Iron palette. You also can have a look at the thermal readings with 5 different coloration gamuts, grayscale, and grayscale with the coldest components of the body highlighted as blue or the most popular components of the body highlighted as purple.
If you are not positive what the colours imply, the IR Scale possibility within the pop-up menu reveals the complete coloration gamut of your chosen palette, with most and minimal detected temperatures labeled. You also can transfer these extremes by dragging them up and down the dimensions to regulate what colours are displayed in what temperature ranges. The Pro mechanically adjusts the gamut based mostly on the temperatures it at present detects in view, however it’s also possible to lock the vary to no matter it is with one other faucet.

For exact temperature measurements, the crosshair button on the high of the display screen provides three totally different temperature meters. You can discover out the measured temperature based mostly on a single spot, a bigger circle, or an oblong area. They seem within the middle of the body, however you may drag them round along with your finger to examine the temperature of something within the body. This quantity will not be fairly as exact as a thermometer, as a result of distance and texture can have an effect on how a thermal imager measures warmth, however it can supply a reasonably correct approximation.
You can seize nonetheless photographs, movies, and time-lapse recordings via the Flir app, all saved at 1,440-by-1,080 decision. Videos are saved as MP4 or MOV information (relying on Android or iOS variations of the machine). The app retains all of the thermal imaging information, letting you toggle between MSX, thermal, and visible views; change palettes; regulate temperature ranges for the chosen palette; and meter particular temperatures. Effectively, no matter you are able to do to regulate the image whilst you’re taking it, it’s also possible to do with the image after it is taken. However you regulate the image, you may then save and share an ordinary JPEG file via any app or service in your cellphone.
Higher Resolution and Hotter Temperatures
The Flir One Pro’s 160-by-120 thermal decision is certainly one of its greatest benefits, with 4 occasions the variety of thermal imaging pixels because the 80-by-60 Flir One and Flir One Pro LT. The photographs and movies it captures are the identical resolutions because of the an identical visible digital camera and MSX processing, however they will present way more thermal element because of the additional pixels. The contours and bounds of cold and hot spots are much more distinct via the Flir One Pro, producing an enormous bounce in imaging high quality and usefulness from the opposite variations. Objects that appeared like obscure splotches via the Flir One are way more simply discernible via the Flir One Pro.
Left to proper: Flir One, Flir One Pro
Besides the upper decision, the Flir One Pro’s thermal core also can measure objects 3 times hotter than the Flir One and Flir One Pro LT. By default, it measures a temperature vary of -4 to 248 levels Fahrenheit, like the opposite Flir One units. You can change into the upper temperature mode within the app to maneuver the minimal temperature as much as freezing (32 levels Fahrenheit) and bump the utmost to 752 levels.
Unless you are a firefighter, blacksmith, or maintain one other extremely specialised position that entails coping with excessive temperatures, you in all probability will not discover a lot want to make use of the Flir One Pro’s high-temperature mode. The 248-degree most of the usual mode is sufficient to analyze heating vents, sizzling water pipes, and pc energy provides. For most customers, whether or not handyperson or ghost hunter, you are more likely to seek out temperatures that dip just a few levels under freezing than over 500 levels above boiling.
The Most Thermal Power
The One Pro is Flir’s strongest consumer-level, phone-based thermal imager. Its bounce in thermal decision alone justifies its $400 worth in contrast with the $200 Flir One and the $300 Flir One Pro LT, and its capacity to measure a lot larger temperatures is a helpful further for some, and important for others. The wealth of data you will get with each shot, together with a number of metering choices for checking temperatures wherever on the body, is a big boon over the center-spot-only meter of the Flir One. As such, it earns our Editors’ Choice as the very best consumer-level thermal digital camera out there.

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