Within Sensor Errors
Why blurry lights become triangle UFOs on camera
Out-of-focus lights can take on the shape of a camera aperture and create convincing geometric UFO forms.
On this page
- How autofocus hunts in low light
- The pyramid UFO footage controversy
- Testing whether shape comes from optics
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Introduction
Triangle-shaped “UFOs” filmed at night often look persuasive because the geometry appears too precise to be random blur. In many cases, however, the triangle is not the object in the sky at all. It is the shape of the camera’s own aperture being projected onto an out-of-focus light source. When autofocus struggles in darkness, distant aircraft lights, stars or planets can turn into glowing pyramids, diamonds or polygons that appear structured and artificial.
This matters in AI-assisted UFO sighting investigation because modern case analysis increasingly depends on smartphone clips, zoomed digital footage and automated image review. If investigators do not first determine whether a camera was out of focus, both humans and AI systems can mistake a common optical artefact for a structured craft. NASA’s UAP study warned that poor sensor calibration and missing metadata already hamper reliable analysis of unusual aerial reports.[NASA Science]science.nasa.govScience Independent Study Team ReportNASA ScienceIndependent Study Team ReportSeptember 13, 2023 — At present, analysis of UAP data is hampered by poor sensor calibration, th…
How autofocus hunts in low light
Autofocus systems work by searching for contrast. In daylight, edges and textures give the camera plenty of information. At night, a distant light may be the only bright feature in the frame. The camera repeatedly shifts focus back and forth trying to find a sharp edge that may not exist.
When focus fails, a point light source no longer appears as a point. Instead, it expands into what photographers call a “circle of confusion” or bokeh pattern. Crucially, that blur often takes on the shape of the lens aperture itself. If the aperture opening is triangular, hexagonal or pentagonal, the blurred light can inherit that same geometry.[Luminous Landscape]luminous-landscape.comLuminous LandscapebokehFor a triangular aperture we no longer see a circle of confusion, but rather a triangle of confusion. Figure 2 ill…[Wikipedia]WikipediaBokehIn photography, bokeh is the aesthetic quality of the blur produced in out-of-focus parts of an image, whether foreground or back…
This effect becomes stronger under several common UFO-report conditions:
- Night-time recording
- Extreme digital zoom
- Small bright lights against dark skies
- Smartphones with aggressive low-light processing
- Handheld filming from moving vehicles or ships
- Autofocus continuously searching during recording
To a witness reviewing the footage later, the result can resemble a luminous structured craft rather than a blurred aircraft light.
The problem is amplified by expectation. Once a viewer believes the shape itself is the object, every wobble or focus adjustment may be interpreted as manoeuvring behaviour. In reality, the geometry may be changing because the lens is changing focus distance.
Why triangles appear instead of circles
Many people assume out-of-focus lights should always become soft circular blobs. That is only true when the aperture is close to circular. Real lenses often use multiple aperture blades that form polygons.[B&H Photo Video]bhphotovideo.comunderstanding bokehB&H Photo VideoUnderstanding Bokeh | B&H eXploraJul 28, 2021 — Therefore, for example, a lens with five aperture blades will produce, som…
A triangular opening produces triangular blur. A five-blade aperture can create pentagonal highlights. Photographers deliberately exploit this in artistic “custom bokeh” photography by placing shaped masks over lenses so that every blurred light becomes a heart, star or triangle.[Digital Camera World]digitalcameraworld.comBokeh, aesthetically pleasing out-of-focus light points, take on the shape of the camera’s aperture—thus, by creating DIY templates, phot…
That same principle can unintentionally create “pyramid UFOs”.
The geometry can look especially convincing because:
- The shape stays consistent across multiple lights
- Bright points appear solid rather than fuzzy
- Slight camera shake makes the object seem dynamic
- Digital sharpening can harden the edges
- Compression artefacts may create apparent surface detail
In heavily compressed social-media clips, these artefacts can survive long after the original optical information has been lost.
The pyramid UFO footage controversy
One of the best-known modern examples involved night-vision footage recorded by US Navy personnel aboard the USS Russell in 2019. The released clips appeared to show glowing pyramid-shaped objects hovering over naval vessels. The footage quickly spread online as possible evidence of advanced craft.[2FOX 11 Los Angeles]foxla.comRELATED: Pyramid-shaped UFOs…Read more…
Sceptical investigators and imaging analysts argued that the pyramids were consistent with out-of-focus aircraft lights viewed through a triangular aperture system. Mick West and other analysts demonstrated that similar shapes could be recreated by deliberately defocusing bright lights while filming through matching optical geometry.[Wikipedia]WikipediaPentagon UFO videosPentagon UFO videos
Importantly, the debate was not simply “real UFO versus hoax”. The more precise technical question was narrower:
- Were the triangular shapes properties of the objects?
- Or were they properties of the imaging system?
That distinction is critical in responsible UAP analysis. A conclusion that the triangle shape is an optical artefact does not automatically identify the underlying object. The source could still have been an aircraft, drone or another unresolved target. What changes is the evidential claim. The footage no longer demonstrates a physically triangular craft.
This is exactly the type of claim reduction that AI-assisted investigation workflows should perform early in the analysis process.
Testing whether the shape comes from optics
Investigators can often test the autofocus explanation directly instead of arguing abstractly about what the witness “really saw”.
Compare multiple lights in the frame
If several lights share the same triangular shape and orientation, the geometry probably comes from the lens rather than from multiple independently triangular objects.
Aircraft navigation lights, stars and streetlights often all become identical polygons when badly out of focus.
Watch for focus transitions
In many clips, the object changes shape as autofocus hunts. A triangle may briefly collapse into a circular blur or sharpen into a conventional light before expanding again.
That behaviour strongly suggests an optical origin.
Recreate the effect experimentally
One of the strongest investigative methods is controlled recreation. Investigators can:
- Use the same phone or camera model
- Film distant aircraft or stars at night
- Force incorrect focus
- Match zoom level and exposure settings
- Compare resulting geometry with the original footage
If the same pyramid effect appears under controlled conditions, the case for an autofocus artefact becomes much stronger.
Examine metadata and exposure behaviour
Modern smartphones continuously adjust:
- ISO sensitivity
- Focus distance
- Digital sharpening
- Noise reduction
- Exposure compensation
Without original metadata, investigators may only see the processed final image rather than the true optical behaviour. NASA’s UAP review repeatedly stressed that missing metadata weakens reliable interpretation of unusual footage.[NASA Science]science.nasa.govScience Independent Study Team ReportNASA ScienceIndependent Study Team ReportSeptember 13, 2023 — At present, analysis of UAP data is hampered by poor sensor calibration, th…
Why smartphones are especially vulnerable
Older UFO photographs often involved film cameras or dedicated optics. Modern reports increasingly come from phones designed to produce attractive consumer images rather than scientifically stable measurements.
Smartphone cameras combine:
- Tiny sensors
- Computational sharpening
- AI-based noise reduction
- Aggressive exposure balancing
- Multi-frame image stacking
- Continuous autofocus correction
These systems are excellent for everyday photography but problematic for distant night lights. The phone may invent edge detail or stabilise shapes in ways that make a blurred object look more structured than it really was.
Some newer AI photography systems can also hallucinate detail during enhancement. A low-information blob may emerge from processing with apparently crisp geometry that never existed in the original sensor data.
For UFO investigation workflows, this means the original file matters enormously. Screen recordings, reposted clips and compressed uploads can destroy the evidence needed to identify autofocus artefacts.
How AI systems can misclassify triangle artefacts
Machine-learning systems trained on visual anomalies can accidentally learn the wrong lesson from blurred footage.
If a training set contains many labelled “triangle UFO” examples without accounting for optics, the model may begin detecting aperture artefacts rather than unusual aerial vehicles. Research into computer vision and bokeh effects has shown that out-of-focus rendering can significantly affect recognition systems.[arXiv]arxiv.orgNatural & Adversarial Bokeh Rendering via Circle-of-Confusion Predictive NetworkNovember 25, 2021…
A robust AI-assisted UFO workflow should therefore include optical screening stages before anomaly scoring. Useful automated checks include:
- Detecting repeated polygonal blur patterns
- Measuring focus instability frame by frame
- Comparing object shape against aperture geometry
- Checking whether all bright points share identical structure
- Identifying digital sharpening halos
- Estimating likely defocus levels from blur size
In practice, this means the system first asks: “Could the camera have created this shape?” before escalating the clip as genuinely anomalous.
What remains unresolved after the optics explanation
Autofocus and aperture effects explain many triangle-shaped UFO images, but not every unusual aerial report. Some sightings include corroborating radar, multiple witnesses, independent sensors or prolonged observation under conditions where defocus alone cannot explain the entire event.
That is why disciplined investigation separates layers of the claim rather than declaring total victory for either believers or sceptics.
For example:
- “The object was triangular” may be unsupported.
- “There was a real light source present” may still be true.
- “The witness observed something unusual” may remain unresolved.
This layered approach is more useful than binary thinking because it preserves uncertainty honestly while removing unsupported visual claims.
In AI-assisted UFO investigation, autofocus artefacts are therefore not merely photography trivia. They are one of the most important early filters separating genuine unknowns from camera-generated illusions.
Amazon book picks
Further Reading
Books and field guides related to Why blurry lights become triangle UFOs on camera. Use these as the next step if you want deeper reading beyond the article.
The Demon-Haunted World
Encourages testing optical causes before accepting triangle UFO claims.
Understanding Exposure
Rating: 4.5/5 from 19 Google Books ratings
Directly explains focus, exposure and point-light distortion.
How to Read a Photograph
Relevant to distinguishing real shape from photographic artefact.
The Photographer's Eye
Supports visual interpretation and composition under camera limits.
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Endnotes
1.
Source: science.nasa.gov
Title: Science Independent Study Team Report
Link:https://science.nasa.gov/wp-content/uploads/2023/09/uap-independent-study-team-final-report.pdf
Source snippet
NASA ScienceIndependent Study Team ReportSeptember 13, 2023 — At present, analysis of UAP data is hampered by poor sensor calibration, th...
Published: September 13, 2023
2.
Source: luminous-landscape.com
Link:https://luminous-landscape.com/bokeh/
Source snippet
Luminous LandscapebokehFor a triangular aperture we no longer see a circle of confusion, but rather a triangle of confusion. Figure 2 ill...
3.
Source: Wikipedia
Link:https://en.wikipedia.org/wiki/Bokeh
Source snippet
BokehIn photography, bokeh is the aesthetic quality of the blur produced in out-of-focus parts of an image, whether foreground or back...
4.
Source: Wikipedia
Title: Pentagon UFO videos
Link:https://en.wikipedia.org/wiki/Pentagon_UFO_videos
5.
Source: arxiv.org
Link:https://arxiv.org/abs/2111.12971
Source snippet
Natural & Adversarial Bokeh Rendering via Circle-of-Confusion Predictive NetworkNovember 25, 2021...
Published: November 25, 2021
6.
Source: Wikipedia
Link:https://en.wikipedia.org/wiki/Camera
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CameraA camera is an instrument used to capture and store images and videos, either digitally via an electronic image sensor, or chemi...
7.
Source: luminous-landscape.com
Link:https://luminous-landscape.com/rediscover-understanding-bokeh/
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Understanding Bokeh11 Jul 2018 — Boke, the quality of the out-of-focus image, is determined by the set of brushes: the circles of confusi...
8.
Source: arxiv.org
Link:https://arxiv.org/html/2506.00125v1
Source snippet
1 Introduction30 May 2025 — The scientific study of Unidentified Anomalous Phenomena (UAP) is severely hindered by inadequate data collec...
Published: May 2025
9.
Source: youtube.com
Title: Mick West
Link:https://www.youtube.com/watch?v=-r2oaQWmqkk
Source snippet
Donut UFO - Quick Explanation - It's Bokeh...
10.
Source: bhphotovideo.com
Title: understanding bokeh
Link:https://www.bhphotovideo.com/explora/photography/tips-and-solutions/understanding-bokeh
Source snippet
B&H Photo VideoUnderstanding Bokeh | B&H eXploraJul 28, 2021 — Therefore, for example, a lens with five aperture blades will produce, som...
11.
Source: digitalcameraworld.com
Link:https://www.digitalcameraworld.com/photography/photo-technique/i-made-these-fun-custom-bokeh-shapes-for-my-christmas-photography-on-a-shoestring-budget
Source snippet
Bokeh, aesthetically pleasing out-of-focus light points, take on the shape of the camera’s aperture—thus, by creating DIY templates, phot...
12.
Source: foxla.com
Link:https://www.foxla.com/news/pentagon-confirms-recently-released-video-of-pyramid-shaped-ufos-near-san-diego-is-authentic
Source snippet
RELATED: Pyramid-shaped UFOs...Read more...
13.
Source: youtube.com
Link:https://www.youtube.com/watch?v=vuSeV0N2QRw
Source snippet
BOKEH and out of focus blur - Episode 4.3What causes the shape of the Bokeh (aesthetic quality of out of focus blur) in your photographs?...
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Cameras | Digital CamerasDiscover a range digital cameras, spanning Action, Compact, DSLR, and more, all available at Jessops. Order your...
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Source: digitalcameraworld.com
Link:https://www.digitalcameraworld.com/uk
Additional References
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Source: progradedigital.com
Link:https://progradedigital.com/mastering-bokeh-in-photography/
Source snippet
Mastering Bokeh in PhotographyBokeh describes the subjective quality of the blur, the shape, size, and softness of the areas, and how ple...
17.
Source: parkcameras.com
Link:https://www.parkcameras.com/
Source snippet
Park Cameras | Digital Cameras, DSLRs, Lenses, Video & MoreShop online for digital cameras, DSLR cameras, lenses and all photographic acc...
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Source: canon.co.uk
Link:https://www.canon.co.uk/store/cameras/
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Source: currys.co.uk
Link:https://www.currys.co.uk/cameras
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Source: zhihu.com
Link:https://www.zhihu.com/en/answer/3211845828
21.
Source: youtube.com
Link:https://www.youtube.com/watch?v=iTvm_xDVaDI
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Pentagon confirms UFO video is real, taken by Navy pilotA pyramid-shaped object seen flying through the sky has been... Pentagon confirm...
22.
Source: argos.co.uk
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CamerasShop our range of Digital & Disposable cameras including Action, Compact, DSLR & more at Argos. Order online today for fast home d...
23.
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Title: nasa urged to take more permanent role in uap research effort
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NASA Urged to Take More Permanent Role in UAP...15 Sept 2023 — The study team found that most UAP data is “hampered by poor sensor calib...
24.
Source: nevadacurrent.com
Title: nasa report finds no evidence that ufos are extraterrestrial
Link:https://nevadacurrent.com/2023/09/18/nasa-report-finds-no-evidence-that-ufos-are-extraterrestrial/
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18 Sept 2023 — Analysis of this data is “hampered by poor sensor calibration, the lack of multiple measurements, the lack of sensor metad...
25.
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Title: nasas unidentified anomalous phenomena report key takeaways
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NASA's Unidentified Anomalous Phenomena Report14 Sept 2023 — “At present, analysis of UAP data is hampered by poor sensor calibration, th...
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