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.

Filter by
Sorted by
Tagged with
-2
votes
3answers
204 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 ...
-1
votes
3answers
81 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 ...
2
votes
1answer
112 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 ...
9
votes
4answers
1k 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 ...
0
votes
1answer
91 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?
3
votes
1answer
176 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 ...
3
votes
1answer
88 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 ...
1
vote
0answers
61 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 ...
2
votes
1answer
65 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 ...
5
votes
1answer
533 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 ...
7
votes
3answers
320 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:
5
votes
2answers
170 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 ...
2
votes
1answer
92 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
votes
1answer
74 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 ...
-2
votes
2answers
176 views

Mysterious signs or easily explainable artifacts?

These images were taken with an old cheap mobile phone. Could someone please explain what's happening?
6
votes
2answers
585 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
votes
2answers
3k 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%...
5
votes
2answers
470 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
votes
2answers
195 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 ...
1
vote
1answer
113 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 ...
1
vote
1answer
242 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 ...
2
votes
2answers
130 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 ...
1
vote
2answers
215 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
votes
1answer
258 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
votes
1answer
376 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 ...
2
votes
1answer
276 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
votes
3answers
479 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
votes
3answers
371 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 ...
3
votes
0answers
50 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 ...
1
vote
2answers
379 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?
0
votes
1answer
88 views

What is the name of this artifact where lines appear in what should be a smooth gradient? [duplicate]

I'm very new in the world of photography, and I want to know the name of this problem. I know there is a word and I searched but I could not find it. If someone knows the word then please enlighten ...
0
votes
1answer
114 views

Arc-Shaped Stripes (Noise?) In Blue Water, Is This Normal? [duplicate]

The water fades in a not-that-smooth way, with some arc-shaped slightly-reddish stripes. As a comparison, the sky has a almost perfectly smooth fade from white to blue. Compressed original image with ...
28
votes
6answers
6k views

What could be the reason for these block-like artefacts in the blue sky?

I'm using the Huawei P10 with its Leica camera. Recently I noticed very visible large block-like artefacts in the sky. These artefacts are present on some pictures, but not on all, and they are ...
19
votes
3answers
7k views

What causes these white, squiggly lines in my photos?

I took this self portrait this morning getting out of the shower. There are some white squiggly lines: two near the sink and one on the door handle. What causes them? The picture was taken with a ...
1
vote
2answers
413 views

Why a partial eclipse is apparent only as an artifact on a smartphone camera?

Both the front and back cameras of my phone did not "pick up" a partial eclipse, but it did appear as an artifact on the image. If I do not see a crescent on the sun itself, why the crescent shows up ...
4
votes
2answers
391 views

Why do my pictures with a 100000 ND eclipse/solar filter have purple haze?

I bought a Marumi 100,000 ND filter in anticipation of tomorrow's eclipse, and while testing the filter today I noticed the photos have an uneven but consistent purple haze, but only with the filter. ...
0
votes
3answers
540 views

What is the origin of the hexagonal artifact of direct sunlight/spotlight photos?

Sometimes direct sunlight or spotlight appears hexagonal on photos/videos. What is the origin of this artifact? (source)
2
votes
1answer
327 views

What is this polygonal artifact with my SEL50f18 and Sony a6000 after extreme shadow boosting in Lightroom?

I recently got a SEL50F18 OSS APS-C Lens for my Sony a6000. As it is my highest aperture lens (f/1.8), I did some experimentation with raw files and tried to push the limits in Lightroom with ...
0
votes
1answer
135 views

What is causing the wispy white artifacts in this photo? [duplicate]

I took this photo at a wedding using an iPhone 7 Plus, and I noticed these wispy white lines most noticeably around the trees and clouds. All the other photos from the same vantage point and time did ...
2
votes
2answers
200 views

Is an artifact in form of a purple dot squat in the middle of the picture an effect of lens optics?

This is related to a question asked on Space.SE: Is this purple dot really caused by Cassegrain optics and coherent backscattering? Zoomed in: Is this sort of artifact known in photography? If so, ...
1
vote
2answers
5k views

Where do these weird spots on my photos come from? [duplicate]

I'm a complete DSLR newbie and just bought a used Nikon D3200 on ebay. The thing is, every time I take photos with the 55-200 objective, I get these weird spots on photos. They are especially easy to ...
2
votes
3answers
2k views

What causes blue artifacts when viewing an image in Camera Raw or Lightroom?

I'm getting random blue artifacts, I have tried different monitors, monitor recalibration, sRGB, and I've tried running it on CPU (not the GPU). No luck yet soon as I open it in ANY other program it ...
3
votes
2answers
1k views

What's causing this white smudge in the middle of the photo?

Specifically, this photo. . This was taken with a Canon 1000D, with a 1985-ish Admiral/Panagor 55-225mm manual telephoto/macro that I picked up for cheap at a charity shop; it's a Minolta mount, so ...
0
votes
2answers
131 views

What Happened to my DSLR?

My DSLR has been working perfectly until some time in the afternoon today. This baffles me. From a certain point on today, this DSLR started producing artifacts resembling motion blur in roughly 80% ...
2
votes
3answers
679 views

Are the artifacts I am seeing with my Samyang 24mm f/1.4 typical?

Before having repaired this lens, below is the test image, with contrast adjusted and shot in f/1.4. The bigger and brighter stars are not round, with some decentering issue. As it should not be like ...
0
votes
3answers
163 views

What fuzzy/glitchy around edges effect/artifact is this? & How can it be achieved?

I don't know what exactly it is but it's some kind of a blur, color separation, fuzziness and i guess it's caused by the lens. I marked it in this image below:
2
votes
2answers
147 views

How can I fix false rainbow-looking color shades in pictures of fabric?

I just took a few pictures and realized they all came out with this "rainbow" looking shades. How can I fix it in post-processing? See below.
2
votes
1answer
802 views

What is the cause of this red-green artifact and how can I prevent it?

When I take photos, I have the same kind of artifact like in this photo (but not as much) : What is the cause of this artifact and how can I prevent it ? An example from my camera, note ...
7
votes
1answer
2k views

Strange pattern in picture

I took a picture this weekend with my Canon 450D, and I noticed an area with a strange pattern: What could possibly be causing this? Does it come from the sensor? Feels to me like it's the physical ...
2
votes
0answers
116 views

How to correct HDR post-processing artifacts in a series of exposures

I have taken several series of frames that I intend to process into timelapse sequence. Some were taken using a smartphone camera in HDR mode. Due to the post-processing that happens in the device, ...