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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1answer
53 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 ...
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1answer
56 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.
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1answer
110 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 ...
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1answer
151 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. --- ...
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3answers
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 ...
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2answers
152 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 ...
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3answers
4k 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 ...
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2answers
188 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.
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1answer
133 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 ...
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0answers
60 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 ...
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2answers
99 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 ...
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3answers
263 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 ...
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1answer
107 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 ...
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2answers
468 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 ...
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2answers
155 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 ...
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1answer
89 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 ...
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2answers
93 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/...
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4answers
146 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 ...
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2answers
93 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 ...
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3answers
175 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.
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3answers
226 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 ...
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3answers
98 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 ...
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1answer
118 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 ...
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4answers
4k 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 ...
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1answer
129 views

Why does purple lines appear in CCD?

I know CCD scans the array line by line and over voltage from even a single pixel can wreck the whole line. But why are these wrecked lines colored magenta?
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1answer
208 views

What is this RGB artifact and how did it form?

I took this with my Nikon DSLR about a month ago. Today I was going through the photos and was just about to delete this otherwise unremarkable picture when I noticed a large artifact over the image ...
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1answer
95 views

What is this streaky Cyanotype artifact?

So I made some cyanotype prints for the first time. So much fun !!! :D However I seemed to be getting some artifacts in my highlights See around the ship: Original to compare: So after ...
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0answers
93 views

What are the underlying causes of artifacts seen with anamorphic lenses?

When a camera with an anamorphic lens shows some artifacts, they are usually either an oval bokeh (vertical) or a lens-flare steak (horizontal). How much of these artifacts are due to the "anamorphic ...
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3answers
86 views

Possible cause for corrupted images (colored stripe with dots in pictures)?

I've noticed the below artifact/data corruption (colored stripe with dots) in a small handful of my photos, and I'm trying to figure out the cause. Is it the camera (Nikon d90)? Could it be the SD ...
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1answer
540 views

Why is the bottom of this image over-exposed?

I am getting a lighter edge on the bottom of my images... I have googled and can't seem to find anything that points me in the right direction to the cause. Any ideas? Info: Canon 6d OrLit ...
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3answers
328 views

What caused the strange “wave X” lines in the out of focus background area in this photo?

Can anyone explain these wavy lines forming a across in the photo? I used a Nikon AF-S DX 18-140mm 3.5-5.6G ED VR at 140mm, ISO was set to 160. Here is a 1:1 pixel crop:
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2answers
215 views

What is this odd brushstroke-like blur with my Canon EF 100-400mm f/4.5-5.6 L IS II?

I am shooting a lot of low light sports up in the north and I have noticed a lot of back focusing issues that I mostly blamed on myself with a 5D Mark IV and EF 100-400mm f/4.5-5.6 L IS II. But ...
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1answer
99 views

Weird orange artifacts in smartphone image of a white light source [duplicate]

In my work (lab research), I have need to take digital photos of thin transparent gels sitting on and being illuminated by a white light box. When I try to take a digital photo, weird orange bands ...
2
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1answer
76 views

Trying to determine potential causes for boxy (digital?) artifacts

I'm looking at lots of photographs taken in either the late 1990's or early 2000's of book pages printed in the 1700's. In those photographs, I occasionally see the kind of boxy artifacts pictured ...
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2answers
181 views

Mysterious signs or easily explainable artifacts?

These images were taken with an old cheap mobile phone. Could someone please explain what's happening?
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2answers
949 views

What is “veiling glare”? How does it affect my photos, and how can I avoid it?

Someone mentioned that "veiling glare" or "veiling flare" was to blame for reduced contrast in a photo. What does this mean exactly? What causes veiling glare, and how can it be avoided? How does it ...
17
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2answers
4k views

What causes these inconsistent dark bands in some of my photos from an indoor event?

Yesterday I took photos of an event at school. The lighting was poor so I increased the iso to 3200, shutter speed was between 80 and 250 and the aperture between 2.8 and 4.0. Canon EOS500 about 10%...
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2answers
617 views

What is the cause of inclusions in my bokeh?

I was doing a lens review an two of my lenses showed these rather unsightly inclusions in their bokeh. There are two different lenses. EDIT: The third lens I have tested also seems to have this ...
4
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2answers
198 views

What is causing this ghostly image of a circuit board to appear in images from my webcam?

I am the owner of a Logitech c930e webcam. This morning I turned it on and the images looked like it was a PCB printed on the sensor. So I am here asking to anyone that know something about this ...
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1answer
121 views

What is the cause of these hard transitions after HDR processing?

The images were taken with a Canon EOS 5Ds R. All 3 exposures (JPEG) were merged with easyHDR Pro. We have discovered that the original images have this artifact - in blue skies, hard transitions are ...
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1answer
326 views

Why do strange purple blotches appear in shadows when using a Camera RAW profile other than “Neutral”?

I have recently ran into an issue with my Nikon D3200, it seems I may have toasted my DSLR's sensor - I stupidly shone my phone's flashlight on it when cleaning it recently. These purple patches seem ...
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2answers
138 views

Why is the bloom effect colored?

I've seen many photos where the bloom has a color close to the color of its source. From what I've read, the bloom is caused by an overflowing of the potential well into neighboring sensors. Since ...
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2answers
239 views

How did I get I this flare in my photo with the sun in the frame shot with my phone camera?

What caused the square flare above sun? I've read everything I could get my hands on about flare and different types. I have three diffrent photos of the same flare and I'm just looking for a reason ...
4
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1answer
268 views

Why am I getting color bands at high ISOs?

I have an old Nikon D80 with me. When I shoot with higher ISO, like 800, vertical color bands are produced in the image. Why does it happen and is there any way to eliminate it? Example with high ...
3
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1answer
420 views

Coolpix P900 artifacts

Although I declare myself very satisfied with my Nikon Coolpix P900, I've had in my recent trip in South America numerous pictures blurred by a random artifact, and I would like to know how to avoid ...
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1answer
349 views

Why is there blue 1" edges on developed 35mm film?

I have taken some photos on my Minolta XG-1 35mm film camera and 8 of the 24 photos have blue edges. Some have them on just one edge, some on both and some on the other edge. Can anyone tell me what ...
4
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3answers
693 views

Orange and other artifacts in photos from film camera

I've been thinking about getting into film photography for a while, so recently I grabbed the old Olympus OM-1 from work when they were cleaning out the media cupboard, I'm only mentioned in this so ...
4
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3answers
461 views

Unusual horizontalish line on photograph

I just watched a SmarterEveryDay video about a shot of the blood moon over a Saturn 5 rocket model (which is kinda interesting). In that shot he got an unusual horizontal line across the moon ...
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0answers
60 views

Strange fringe pattern on long exposure photo [duplicate]

While compositing a series of long exposure images, I noticed this strange fringe-like pattern getting brighter at each layer blended in "lighten" mode. It features a circle and a cross in the middle ...
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2answers
451 views

What does lens flare from a catadioptric (mirror) lens look like?

Can one get lens flare with a mirror lens? What does it look like?

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