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Questions tagged [artifacts]

Elements of a photograph that are generally undesirable or have a negative impact. Examples include noise, flare, dead or hot pixels, sensor "spots", reflections inside the camera/lens system, etc.

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How can I fix scanner artifacts from Brother DS-640?

I've been scanning a lot of documents using a Brother DS-640 and it has started showing odd pixelation artifacts. (See below.) Is it time for a new scanner or is this something I can fix?
Johnny Rollerfeet's user avatar
0 votes
2 answers
346 views

Pixel 6 Pro Very Strange Artifacts

This is my friends old photo, and many are convinced that this is a ghost, hehe, but you can clearly see curved bars that make up the image. I've spent way too long trying to find the answer, can any ...
Judith's user avatar
  • 9
1 vote
2 answers
162 views

Grey circles in the background in photos

All my photos contain grey circles which is especially noticable on light background (e.g. sky). I don't know what is the name of this specific artefact and what is connected to (lens? camera?). So ...
Inna's user avatar
  • 13
2 votes
2 answers
223 views

What are these striped artifacts in these photos?

I was at a concert and some of the pictures I took had these blue and red or black stripe artifacts, is there a name for these? Would I be able to make a similar or same effect if I desired or are ...
WS87's user avatar
  • 21
6 votes
2 answers
257 views

Bokeh includes seemingly random fractions of a circle

While going through some pictures I noticed strange artifacts in the out-of-focus sunlight reflected on the surface of a lake. Most of the reflections appear as a full circle, but I marked the ...
Janoma's user avatar
  • 160
1 vote
3 answers
109 views

Phenomenon where a repeating pattern on a photo is colorized in alternating stripes [duplicate]

What is the name of the phenomenon where a repeating pattern on a photo is colorized in alternating stripes, like this? In addition, does leading software like Photoshop and Lightroom have ...
Ynhockey's user avatar
  • 113
1 vote
3 answers
135 views

What causes this corner artifact on developed photos?

I am digitizing some old photos via a flatbed scanner and couldn't help but notice a very common artifact that appears in the corner of many of them. The photo is extended by a small rectangle which ...
jan's user avatar
  • 113
0 votes
2 answers
263 views

Weird colour artifacts with Sony a7 III. What's the cause and how can I fix it?

I took some photos with my a7 iii and a Tamron 28-75 lens yesterday and one of the subjects was wearing a shirt made with pink and white fibers. I'm seeing some weird artifacts in the colors that I've ...
0C3D's user avatar
  • 103
0 votes
1 answer
128 views

What kind of artifacts am I looking at and how can I differentiate between those and stars

I like this picture of the Pacific Ocean, taken from the ISS. It seems as if I can see stars in the background, but similar dots are visible in the ocean. I presume some kind of artifacts? What am I ...
hurdsean's user avatar
  • 103
3 votes
2 answers
3k views

What is causing these horizontal lines on developed photos (35mm)?

I recently started using my friend's mom's old Canon 35mm film camera. I was a bit annoyed when having the film developed by a lab, and copied to standard photo paper - there is a single horizontal ...
sixeyes's user avatar
  • 33
1 vote
5 answers
3k views

What is causing the "bright spot" artifact in my picture?

Why is there an artifact in top edge of my picture? Camera: GH4 Lens: 20mm Lumix G 1.7 Shutter speed: 15 sec ISO 100 f/16 Is this something in my sensor? There are two black dots visible under the ...
Okasii's user avatar
  • 11
3 votes
1 answer
535 views

Detect Google "stylized" photo?

Google on Pixel phone stylizes some photos. Selection of photos to stylize is arbitrary (happens to some photos when you upload, no user selection to trigger) and what exactly happens in stylizing is ...
beeshyams's user avatar
  • 131
1 vote
2 answers
181 views

What is this golden streak artifact in this photo?

This was taken at 1/500sec, iso64, f/2.8, 122mm focal length. Nikon D850, 70-200mm lens. At first I thought it was her hair, but it seems to be very reflective and moving very fast: At 100% It even ...
rrauenza's user avatar
  • 954
2 votes
1 answer
208 views

Why am I getting occasional cloud-like artifacts on my 4x5 film shots?

Not always, just from time to time, I'm discovering these cloud-like artifacts on my 4x5 film shots. They are present on the film itself; it's not scanning artifacts. Artifacts can be present on ...
Andrew Y's user avatar
1 vote
1 answer
101 views

plug n play camera compatible with a projector

I am working on a project where I have a projector and a camera working together. The camera will record what a person does in front of a projector. Ideally the camera would also record what the ...
user102087's user avatar
1 vote
3 answers
614 views

What is the name of this distortion or artifact?

What is the name of this distortion or artifact? This is usually found in smartphone cameras, Nikon and Sony point-and-shoot cameras. This is not found in Canon point-and-shoot cameras, in Canon point-...
bypass restrictions's user avatar
0 votes
1 answer
217 views

Image artefacts when exporting RAW to JPEG [duplicate]

I have a bunch of pictures in RAW format (.CR2) taken with a Canon EOS 1100D. When I view these files using Windows Photos app the images look great, however when exporting to JPEG using RawTherapee ...
Lukasz Kaleta's user avatar
1 vote
1 answer
183 views

What causes the frosted glass effect of out-of-focus areas?

I expect that the out-of-focus areas would look like smooth gaussian blur ideally. But I found that they look like looking through frosted glass. Colors around the edges are blending with a grainy ...
nix's user avatar
  • 111
3 votes
1 answer
341 views

What are these curved, dark bands at the top of my photo?

I've had these on two different rolls of film on two different cameras now. It's not a scanning issue, because the bands are visible in the negative when inspected. It's only visible against the sky, ...
Steadybox's user avatar
  • 348
2 votes
1 answer
575 views

What could cause these spots on my scanned negatives?

I just had 4 rolls of film processed and scanned, and have been emailed the scans but have not seen the actual negatives yet. The first thing I noticed is some spots in exactly the same location on ...
Peter M's user avatar
  • 2,036
2 votes
3 answers
394 views

What are these light circles over my photos?

I got a Voigtländer Vito BL recently. I tried it, and noticed that some of the photos came out with a big light circle right in the middle. I have tried searching for circles, stains, orbs, etc., but ...
Purpurina's user avatar
12 votes
4 answers
418 views

multi-strobe-like motion blur outdoors?

This photo (cropped here) appears on p. 48 of the October 2020 issue of the Experimental Aircraft Association's Sport Aviation magazine. The upper blade of the propeller shows the motion blur that is ...
Camille Goudeseune's user avatar
1 vote
1 answer
669 views

What are these lines in photos when viewed zoomed in on iPhone?

I take photos on my Canon (It happens on both my Canon EOS Rebel t1i and my Canon EOS R) camera then download them onto my iPhone. Then when I zoom in close enough, there are these invisible lines on ...
user avatar
6 votes
2 answers
829 views

Why am I sometimes having "doubled image" and soft photos with my Tamron 100-400mm

I sometimes get unsharp results out of my Tamron 100-400mm F/4.5-6.3 Di VC USD, with a "doubled image effect", especially visible in the out-of-focus area (bokeh). But the rest of the time, ...
pocpoc47's user avatar
  • 121
4 votes
1 answer
932 views

35mm Black and White Film Artifacts

I have recently begun shooting photographs using black and white film ( Ilford ISO 50 ). My camera is a Pentax ME with automatic exposure controls and manual focus. My most recent developed photos ...
Timothy Lapp's user avatar
1 vote
1 answer
233 views

What's the problem causing this ring-shaped artifact in my image even though I have cleaned my lens?

I can't see any physical problems on my lens, and sufficiently cleaned it, but see a ring shape in my footage such as... I only have one lens so can't check if it's the camera or lens Any tips or ...
Jonathan's user avatar
0 votes
1 answer
570 views

What causes these vertical dark bands? [duplicate]

What could explain the dark bands seen in these pictures? This photo was taken at the Harvard Museum of Natural History, using a Pixel phone. The picture is shot looking through a glass panel into a ...
Funambulist's user avatar
0 votes
1 answer
346 views

What causes these (constant) black stray lines on my photos? [duplicate]

There are black lines on my Nikon D3100 and I'm wondering if it is a problem with the lens or with the body itself.
AlfrancisTV's user avatar
5 votes
1 answer
269 views

Some darktable modules create hot pixel "sparkles". Is this a bug, or am I using it wrong?

I'm just getting started with Darktable 3.0.0 processing some RAW files out of my Canon 6D MkII. One odd thing I noticed is that some of the modules seem to create hot pixel-like "sparkle" artifacts ...
growse's user avatar
  • 163
1 vote
1 answer
367 views

Green dot in center of photo

When I have to take a photo with smaller aperture and zoom I always get a weird green dot in the center of the image. Please, advice what causes this artifact and a proper way to avoid or fix it. --- ...
Andrew B's user avatar
  • 111
5 votes
3 answers
2k views

Solve unwanted white "waves" and "Pacman squares" in low-light picture - post using Google Photos

After op commented that my picture is super under-exposed, I tried post using Google Photos. But when I increased the exposure, I saw some unwanted white "waves" or rows in the photo. The edges of ...
Erly Marie's user avatar
7 votes
2 answers
944 views

What is the difference between Diffraction Spikes and Lens Flare?

When Googling for lens flare, one often finds images that also include stars (rays / diffraction spikes), like this: What is the difference between diffraction spikes and lens flare and are the two ...
OnBreak.'s user avatar
  • 20.5k
11 votes
3 answers
7k views

How do I take a photo so the moon doesn't have bright "rays"?

Any advice on how to remove moon "rays"? (Looking to learn how to take a photo without them, not remove them in post) Artistic opinion - is it too underexposed? The picture was shot at shutter speed ...
Erly Marie's user avatar
1 vote
2 answers
255 views

What would cause just one photo from my phone camera to have large, blotchy magenta areas?

What would cause the pink on this picture? All the pics before and after were normal. No filter, no flash.
Dsilveira85's user avatar
3 votes
1 answer
973 views

What would cause these white straight but slightly squiggly lines?

I'm using a Holga 120n camera. I look this photo in my garage with my camera stabilized on a table. I noticed two streaks on the photos after developing it. This is the only photo on the reel with ...
Christopher Taylor's user avatar
1 vote
1 answer
269 views

What explains a lens flare "streak" on only one side of light source?

We know than an axial streak can be caused by a smudged lens that has been wiped in one direction. The following image shows both lens flare and a lens "streak." But what could explain the one-sided ...
feetwet's user avatar
  • 3,603
2 votes
2 answers
155 views

Are these soft blotches caused by dirt on the sensor?

Can someone tell me if this is dirt on my image sensor? They show up in the same place in other images. This photo is a bit clearer — taken at f22 manual focus at the sky and in the exacly same ...
atomicherry's user avatar
6 votes
5 answers
4k views

What caused these large white spots on my developed negatives?

I've shoot some Ilford HP5 + on a Mamiya 645 1000s for the first time. I developed the film with Ilford DD-X (1 + 4), ilford stopbath and fixer on a Paterson tank. After scanning the negatives i ...
nioxys's user avatar
  • 125
1 vote
1 answer
816 views

When zoomed in, I see red, blue and white pixels. What is the cause of this? [duplicate]

I was experimenting with the bulb mode of my Canon EOS 600D camera. I realised, in the image there were these red, blue and white pixels that are also seen in the screenshot. What is the reason that I ...
alpt's user avatar
  • 11
3 votes
2 answers
684 views

What causes this bloom with an old telephoto lens?

I recently got a Görlitz-Meyer Optik Telemegor 250mm F5.5 I am using this telephoto-lens on my Sony a6300 APS-C camera and I like it. The problem I currently have is, that I get a lot of "bloom" in ...
Hannes Hauptmann's user avatar
0 votes
2 answers
244 views

Is it just me, or do smartphone cameras not have any chromatic aberations at all?

To this day I have failed to spot any color artifacts in smartphone photos. Either Nokia N8 phone on a camera or my old Vibe P1 Turbo and even the G7102 I have (Which has glare towards the edges) Is ...
Delta Oscar Uniform's user avatar
0 votes
1 answer
105 views

Where does this yellowish shadow artefact come from?

I only notice this yellow shade after creating a HDR (Near the top of the building in the foreground. The image in this question is cropped from the oirginal) I didn't notice before because HDR makes ...
Anthony Kong's user avatar
0 votes
2 answers
250 views

Is it possible to get green and red chromatic aberration?

In one of the hallucinating scenes in a video I have played. The vision is blurry and objects nearer the edges of the screen are green and red Now the usual chromatic aberration patterns are purple/...
Delta Oscar Uniform's user avatar
7 votes
4 answers
331 views

Is this long-exposure artifact a sensor defect or light leak?

I am shooting on the Nikon D800. I suspect it has a sensor defect because there is a very uniform artifact, in my images. It looks unlike a light leak as it's always in the same position and has the ...
HelloWorld's user avatar
  • 1,155
2 votes
2 answers
1k views

Why are there weird red spots and blobs on images taken with Yashica Super FX-3?

I have been getting some weird reddish dots and blobs in most of my shots with my old Yashica Super FX-3. They seem to appear with any lens and using film rolls with different ISOs (200/400), and also ...
Daniel López's user avatar
1 vote
3 answers
358 views

What is the maze-like pattern in a magnified full-size review of my image?

I'm making an edit in Lightroom. Can anyone tell me what this pattern is? And also how to get rid of it.
user avatar
-1 votes
3 answers
407 views

What can cause a horizontally flipped ghost image when using a monochrome line-scan camera?

What can cause a horizontally flipped detailed ghost image in a monochrome line scan camera? I am new to photography but I have been seeing horizontal reflections in pictures with bright objects. I ...
Brad M.'s user avatar
-1 votes
3 answers
179 views

Damaged coating tamron 18-200mm?

I just bought a secondhand 18-200 tamron lens but I can't seem to get a fully sharp picture. I know my settings and the picture is "smudged" blurry and seems to have some color artifacts on one side ...
jelle's user avatar
  • 1
2 votes
1 answer
177 views

Why does this ugly line pattern appear when I upload my full-sized image to a website or view on mobile?

I have 5760×3840 size JPEG image and when I upload it to a website or try to view on mobile, some kind of line things seem to be going on it. It looks ugly. I tried to resize the image to 1200X800 and ...
adilcn's user avatar
  • 23
9 votes
4 answers
27k views

How to edit photograph to remove flashes of light / glow / glare?

How can I remove the "glare" on the musicians in the photo below using Photoshop? I do not have the relevant vocabulary to express what this "glare" really should be called. I am not a photographer ...
Colin m Gilker's user avatar

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