Bushnell Core S-4K No Glow review: a fast, fuss-free wildlife tracker that occasionally shows its age

It’s taken me a while to get my hands on the Bushnell Core S-4K No Glow, one of the company’s most popular non-cellular trail cameras. Bushnell has long been recognised for its outdoor optics, and this unit is aimed at wildlife enthusiasts or spotters who want a good level of visual detail with little fuss.

If you’re interested in specs, the camera’s main shoutouts include 4K video at 20fps, 30MP stills (interpolated) and improved storage up to a 512GB SD card, meaning you can leave the camera for longer without worrying about filling the memory too quickly.

The S-4K No Glow isn’t a new model. Released around mid-2021, it’s effectively the slightly more affordable sibling to the Bushnell Core DS-4K No Glow (the DS standing for double sensor) that we tested back in 2022. The S-4K shares the same heavy-duty casing and 4K capability but uses one 4K sensor that relies on an automatic mechanical IR filter to switch between day and night capture.

The S-4K No Glow faces tough competition in our guides to the best trail cameras and best wildlife cameras, but on paper at least it excels in a few areas. Firstly, the camera offers what I’ll call ‘true’ 4K video resolution. I’ve come to realise that many budget trail cameras advertise 4K video, but actually use software interpolation to take a lower-resolution sensor (like 1080p or 720p) and stretch the pixels to fit a 4K frame. And the result is footage that still looks pixelated.

So the Bushnell Core S-4K No Glow records full 4K, which promises better fine detail to the picture. But of course, resolution is only one element in determining footage quality; dynamic range, flash range, and trigger speed all contribute, too. With a trigger speed of 0.2 seconds for photos, 0.4 seconds for video, the Bushnell Core S-4K No Glow is near the top of its class for response time among ~$200 non-cellular cameras. And as its name suggests, the camera also has completely invisible IR flash, meaning it shouldn't spook shy mammals or alert walkers-by to its location.

One thing niggling me about the S-4K No Glow was the spec that footage maxes out at just 20fps in 4K. I don’t want stuttery footage when recording fast-moving animals, and anything under 25 or 30fps can create that. It is possible to set higher frame rates with the S-4K No Glow, but only by dropping the recording resolution down to 1080p.

With the Core S-4K, it feels like Bushnell is pitching an unpretentious, reliable workhorse for serious wildlife watchers who want sharp footage but don’t need apps and remote footage. But it’s about five years old now. Should this make us worry about outdated tech, or does it still hold its weight against newer rivals from Browning and Spypoint? I took it out into my local British woodland to see if its single-sensor setup and fast trigger rates delivered the premium picture promised, or if I’d end up missing the remote convenience of a cellular connection.

Bushnell Core S-4K No Glow: Specifications

Bushnell Core S-4K No Glow: Price

The Bushnell Core S-4K No Glow retails at around $200/£190, putting it in the premium tier of traditional, non-cellular trail cameras. At first, I thought that tag sounded steep for a camera that can’t send images directly to your phone, especially when budget brands like Stealth Cam or GardePro offer entry-level models for half this price. But Bushnell is targeting wildlife enthusiasts wanting native high-resolution video and instant trigger speeds over wireless phone updates.

Where the Core S-4K leads the market is that, unlike cheaper 4K cameras that use digital interpolation to fake resolution, it uses a dedicated dual-sensor array to capture true, native 4K video. It is also one of the few cameras in its class to support full 512GB SDXC storage, allowing you to shoot 4K clips for longer without filling the card.

The camera faces some competition from the Browning Recon Force Elite HP5 Ultra (2026 model). This maxes out at 1440p, but offers a smoother 60fps frame rate for action shots compared to Bushnell's 30fps at 4K, and half the trigger recovery time at 0.5 seconds. Being a non-cellular model, of course, there are no data subscriptions to factor in. The Core S-4K No Glow is a fair price for a high-end trail camera, though it’s not exceptional value either.

Bushnell Core S-4K No Glow: Design & Handling

To look at quickly, the Bushnell Core S-4K No Glow resembles any quintessential camo trail camera. Its tree-bark-inspired camouflage is designed to blend into woodland trunks, and doesn’t do a bad job – though the cool reads a little too cool gray for a UK woodland in summer.

It’s a minimalist cubed design, and the only indication of external branding is a subtly embossed 'B' on the front door. Size-wise, it’s a relatively light and compact model measuring 6.5 x 10.5 x 15cm, as there's no cellular antenna or solar panel to consider. It sits nearly 2cm flatter than the Browning Strike Force HD Pro X1080 I tested most recently, so it sits more flush against a tree trunk or flat mounting post out in the field.

The camera’s handling also follows a familiar layout for anyone who has used modern trail gear. There’s a heavy-duty latch holding the fold-open front door shut with a solid snap. I couldn't find an official IP rating for weatherproofing.

I tested the camera during the UK’s fifth heatwave of the summer, so while I can’t vouch for its ability to keep out water, I’ll say that the Core S-4K certainly feels solid and well-constructed. The weather sealing is handled by a thick rubber gasket running along the inner rim to keep the internal buttons isolated from rain and humidity.

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As is standard again for trail cams, you open up the secure latch from right to left to reveal the control center. The layout is super simple: a four-way plastic arrow pad with a central OK button, a dedicated menu button, an on/off toggle switch, and an eject button for the battery compartment. The plastic buttons feel a little more rattly than some rivals I’ve tested, but they respond predictably enough – and realistically, nobody buys a trail camera for its button feel. It’s a shame they don’t light up, mind.

On the right side of the casing is the SD card slot and a 9V DC external power jack. Placing the SD slot on the side rather than the bottom makes inserting and retrieving memory cards easy, even when the unit is strapped to a tree. The same can be said for pressing the release button to drop out the 6 x AA battery tray.

The batteries load smoothly, which isn’t always the case, and I found that the tray slides smoothly up and back into place. Though Bushnell says you might get a year out of full batteries, it’s reassuring to know that you can swap power in seconds without needing to unmount the camera from its position.

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Above the control panel sits the welcome 1.5-inch color LCD, useful for double-checking your framing and camera angles before walking away. Because of its small size and basic resolution, I found it functions more as an alignment guide rather than a precise monitor for reviewing footage. I struggled to pick out any fine details and had to wait to view clips on a proper laptop monitor when I came home.

Setting up trail cameras can be more fiddly than it needs to be. But running through the Bushnell settings menu using the arrow keys makes for one of the simplest setups I've experienced. The interface has a high-contrast black-and-white design, and while I think this would make navigating menus in dark woods easy, the small display size still meant my (usually good) eyes struggled a bit, forcing me to get up close to read what settings I was changing. Still, for usability and hassle-free mounting, the S-4K No Glow gets the core fundamentals right.

Bushnell Core S-4K No Glow: Performance

Above: Sample clips from the Bushnell Core S-4K No Glow

I’ve been testing several trail cameras over the past few months, and like those other models, I strapped the Bushnell Core S-4K No Glow to a tree in my local British woodland for several weeks. I regularly swapped between 30MP stills and 4K video clips to see how its single-sensor setup holds up in real-world conditions. One big perk over other models I’ve tried is that you can also set it to ‘hybrid’.

This 2-in-1 mode where it’ll shoot an image first, then begin recording a full 4K video clip (for whatever duration you set. It’s the mode I found myself using most often, particularly as you can’t change the mode remotely without cellular. That way, I got a still image for quick identification, backed up by motion footage to observe the animal more closely.

Working this way adds a slight operational delay compared to running it in photo-only mode. Because the camera has to capture/process a photo and then switch to recording 4K video, there’s a tiny lag between the initial photo and the start of the video clip. There’s also a slightly longer recovery time before the camera can trigger a second sequence.

Supposedly, running Hybrid Mode also burns through battery power faster, but this isn’t something I noticed. After two weeks of running the camera in a set-and-forget way, the battery gauge looked nearly full. In Bushnell's menu system, when the camera is set to its highest infrared output (Long Range or High illumination mode), nighttime video clips are limited to 15 seconds to prevent battery drain and thermal overload.

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With the camera set to its highest trigger sensitivity and its quoted 0.2-second trigger speed, I found it genuinely responsive. Looking at my test frames in photo mode (not hybrid), both a trotting fox and a roe deer were captured in the middle of the frame rather than disappearing off the edge. However, even with rapid firing, fast animal movement in low light still produces noticeable motion blur, particularly around shuffling legs and paws.

Despite Bushnell touting 30MP stills and true native 4K video, the visual reality under a dense canopy is mixed. Looking at my daylight capture of a roe deer, the hair textures on its flank looked a little smudged and painted rather than tack-sharp – a reminder that high megapixel counts can’t overcome a single sensor struggling with dynamic range.

Color balance is partly a personal choice, and every trail camera renders slightly differently in this respect. Comparing the daylight capture of a roe deer directly against a very similar shot from the Browning Strike Force HD Pro X1080 highlights the Bushnell's variation. Where the Browning renders natural, warm woodland earth tones with soft highlight roll-off, the Bushnell shifts heavily toward a cold, teal-tinted white balance. Vibrancy is also punchier, where the Browning leans towards a more natural appearance overall.

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Transition periods and night captures highlight the strengths and limits of the single sensor. An early-morning grayscale capture of a squirrel on a fallen log demonstrated that while the resolution is sufficient to spot small mammals, low-contrast dawn light leaves the image looking flat and washed out, making it tricky to pick out subjects.

But at night, the completely invisible "No-Glow" IR array comes into its own. The light beam is spread evenly across the middle distance without there being bright hotspots in the middle, In one shot I tracked a cat without spooking it or triggering any eye-glare reactions (don’t ask me what it was doing in the middle of a wood, though). Close-range auto-exposure is a bit harsher; when a muntjac deer grazed the bottom edge of the frame, the lower LEDs hit more directly, overexposing its back – but that’s getting into picky territory.

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You can record media with or without data strips imprinted onto the bottom. Here, I’ve chosen to include them for illustration – the Bushnell records time, date, moon phase, and temperature. Like most trail cameras I’ve tested, the internal thermometer ran a couple of degrees higher than ambient woodland temps, but as a basic logging tool for local animal activity, it does the job.

Switching over to 4K video clips, the impact of the 20fps cap is apparent, but by no means awful. Watching a nocturnal fox pace across the scene, the footage is sharp and undeniably clear for identifying species, but the tail and stepping paws have a slight, juddery motion that lacks the fluid polish of 30fps or 60fps video.

Again, the No-Glow IR matrix leaves animals completely unbothered, and the fox trotted past without a single glance toward the tree. Audio capture is more than functional. It picked up the faint crunch of footsteps on dry leaves, and though the microphone introduces a background hiss that gives it a slightly tinny, compressed edge, this is something all trail cams contend with.

Bushnell Core S-4K No Glow: Verdict

The Bushnell Core S-4K No Glow is an honest and practical choice for wildlife watchers who want high visual resolution without a monthly data subscription. I'd be confident in the batteries lasting months, but if you do want to go long stretches without checking the camera, you'll need a high-capacity SD card (and the camera supports up to 512GB).

Unlike Low-Glow models, I found that the Bushnell's stealthy No-Glow IR flash performed brilliantly at night, illuminating woodland paths without scaring nocturnal creatures. I also particularly rate the Hybrid Mode, which lets you capture a high-resolution photo alongside motion-backed 4K video for easy field monitoring.

The optical claims aren't without caveats, though. Under a dense and leafy woodland canopy, I found that the sensor could struggle with dynamic range – blowing out sunny highlights and pushing shadows toward an unnaturally cold, teal. Heavy internal processing left finer fur textures looking a bit smudged, and the 20fps cap at max resolution introduces a subtle judder to fast-moving animals.

If you want fluid 60fps action or remote app transfers, newer cellular trail cameras from Browning or Spypoint might suit you better. But if your main goal is long-term, unpretentious local recording with dependable 0.2-second response times and fantastic 2-in-1 captures, I think the Core S-4K No Glow is still a solid contender.

Alternatives

GardePro A3S
At half the price, this budget alternative delivers 1080p video and has a 100ft detection range. It lacks Bushnell's 4K resolution and dual-sensor setup, and is less weatherproof, but it's a much cheaper way to monitor your garden or local patch via an SD card.

Browning Strike Force HD Pro X1080
This (also) non-cellular model has a flexible tree bracket for easy mounting. I found the 0.18-second photo trigger speed fast, but it uses low-glow IR LEDs. It's a cheaper option if you don't need true 4K or invisible no-glow night flash.

Check out our full guides to the best trail cameras, and also the best cellular trail cameras