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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Why do modern aspherical lenses have so much coma?
The Nikon Noct 58mm f/1.2 from 1997 is famous for having excellent coma control wide open. Sources generally credit this to its being one of the first lenses that used an aspherical element, which had ...
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What are these slightly-translucent, branching squiggles on the top of my photo?
I recently came back from holidays and noticed a lot of my photos have these lines on them. I have a Canon 450d and use Canon lenses. I used a polarizing filter at times. What could be causing this?
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What causes the "glow" around objects when turning down highlights and brightening shadows?
I'm sure many of you have seen this. When you turn down the highlights and turn up the shadows, a glow effect appears at the boundary of these two areas. What causes this?
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What causes these "striped" streaks from light sources? [duplicate]
About 10 days ago I took this photo with a Samsung G S3
and why do those lights appear as eh.. eh... stripes?? Just like there was a star filter but lacking the stripe which is perpendicular to the ...
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What are the grey to black lines at the edges of objects in this photo?
The photos I have taken with Canon EOS Rebel T5i has lines at the edges between individual fruits. The colors of these lines range from grey to black. I have attached two versions of the same photo, ...
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Broken photos on dslr [duplicate]
During the last session with my Canon 50D, 4 or 5 photos from 180 appeared to be with artifacts:
Fullsize 15Mb
Fullsize 7Mb
These photos were already broken in preview on camera display, so it can'...
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What causes these streaked rays from light sources?
I recently bought an LG G4, whose camera can shoot in an auto and both manual mode (I can manually set the iso, aperture). I shoot 100% of the time in auto.
It takes better than average photos at ...
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Why do white flowers always have a weird surrounding "glow"?
I have been trying to take pictures of dogwood blooms for a week now. I have the sharpness I want, but the flowers have a weird glow to them. The only post I could find about it is this one. Everyone ...
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What caused these red blotches on the black suit?
My first question. In several wedding photos the groom's black suit has red blotches on it in the photos. The shots were taken with a Canon 6D with a 70 - 200mm lens at 120mm, ISO 250, 1/400 sec., f/2....
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What is this shadow in my photo?
I'm pretty sure the subject didn't move, the shutter speed was ok @1/80s. I was using Canon 70D + 18-55mm IS STM and a built-in flash and shot in RAW. What it could be? What may be causing this?
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What is this bright squarish pattern that I'm getting in long exposure images?
I took few long exposures of the night sky yesterday. I know about the hot pixels those appear brighter with longer exposures but this seems to be something different. Can anybody tell what it is?
...
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Why do exported image contain colored grains/noise when viewed in GNOME Image Viewer?
I was editing a JPG image taken by Nikon D5300, a mid-range DSLR. Original picture was somewhat washed out. After some color-correction, I exported the image both in JPG and PNG format.
Original JPG: ...
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What are the strange curved lines appearing on fabric in my apparel photos, and how can I remove them? [duplicate]
I ran a clothing photography shoot and encountered an issue in many photos.
If you see this image, there are some curved lines all over the item.
What are they and how could I remove them with ...
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Taken a picture of my monitor while spinning in circles - why is it distorted?
I just found a picture again I took years ago, and I'm wondering what's happened ever since then - I hope this is the right place to ask!
I sat on my swivel chair and spun a few times, while taking ...
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How can I avoid circular banding artifacts in clear skies when de-noising?
I photograph in RAW, and convert using Darktable. Camera happens to be Nikon D40, 55-200mm lens. For a small number of photos, especially of clear blue skies, I cannot reduce noise without introducing ...
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Horizontal banding pattern near sun: sensor flare?
Following is a crop from a RAW shot, developed in Lightroom 5.7, into a setting sun from a Sony A77II – ISO 100, f/5, 1/20s, with a TTL fill flash.
In the darker regions near the sun a series ...
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What are these spots in my pictures?
Been getting these bubble type things, never happened before
(Kit lens - 18-55|camera d3200
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What caused this pattern of lines (moire?) in this picture I scanned from a book?
I have scanned this photo from a book that's printed with color ink, but the picture is a black and white one. When I scanned it with Vuescan as a color photograph I get vertical lines like
I think ...
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What are the lines on a screen looked through the camera with varying ISO's?
I have Samsung Galaxy Grand Quattro and I was just experimenting with the camera when I saw lines on the screen. Well this was not the first time I saw them but when I varied the ISO(from Auto to 400),...
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What could cause this visible artifact which seems to a be a glowing inverse of something outside of the frame overlayed on this photograph?
An acquaintance recently posted an image to FB from his recent trip to the JFK Historic Site asking for an explanation of a visible artifact he states was not visible to the naked eye but was visible ...
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What causes these reddish spotty artifacts?
I'm just experimenting with a new lens.
Here is an image I took tonight into the sun. I was trying to capture the rays. I was surprised by the spots that appear on the grass below where the sun is ...
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Why are there small dots on bokeh circles when I zoom in all the way?
I just took a photo with manual focus and blurred as much as I could a light, but instead of getting a uniform colour, there are dots, like dust :
Do you know what's causing the darker dots?
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What are these artifacts I see in print?
I printed one of my photos, and I found it has some artifacts, such as horizontal lines running through the sky. This is most apparent above the pylon (to the right of the train). There's a horizontal ...
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What could be causing these lines and distortion?
I have a Sony DSC-W830 as a little budget camera for a trip, and I've had it for about a year now. Lately the images have begun to come out with some odd lines and what I could only describe as "...
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Time-varying artifacts in long exposure: is it the sensor?
I have just made my first attempt to photograph the International Space Station, and I clearly need to improve my technique. Here are the details:
Body: Canon EOS-M (1)
Lens: EF-M 55-200mm at 200m, f/...
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How can I eliminate white glow/halos surrounding bright objects?
I recently took this picture and was frustrated by the white glow coming from the man's shirt. I realize it's a high contrast scene, but I don't understand the science behind why the shirt appears to ...
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What are these streaks in negative scans I got back from a lab?
I'm a beginner that's getting back into film photography after many years. I just received scans of my negatives and noticed some of them have streaking while others do not. I feel like this may have ...
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What could cause this white speck in a blue sky?
I took a photo during blue hour, and notice that there are some strange white speck on the blue sky. What is this and why it happens? Initially I thought it was dust, but usually dust will leave black ...
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Why am I am seeing rings (banding) instead of smooth graduation in my sunrise pictures?
Below is a screen capture crop from Potoshop of an unaltered raw photo from my full frame Canon 6D taken with the new Canon 16-35 f4 L at 16mm, ISO 100, f22. I am seeing rings where I am expecting a ...
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What is the cause of black bars on a photo of AMOLED display?
What is the cause of those black bars on the picture?
Their orientation changes by moving the camera.
The display is of a Samsung Galaxy S3 (i9300), an AMOLED display, set to minimum brightness, ...
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Can I fix the large pink mark which appears on all photos with light background from my Canon Powershot ELPH?
I have a Canon Powershot ELPH 300 HS.
See the large pink smudge across the left?
Is this a problem I can fix by cleaning the lenses and image sensor, or is this camera/sensor a dud?
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What causes this weird angled glowing blur around lights on my low light shots?
I've been trying to figure out why this is happening for a few weeks. When I take pictures, usually during evening times when the sun starts to set and the street lights come on, I see this weird ...
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Why do I get dark horizontal lines (stripes or bands) in bad lighting with my Fuji X-T1?
Can anyone explain why I get these lines when taking photos in bad/weak lighting? Here are some photos.
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What is this yellow mark I get on dark photos?
I'm using a Nikon D3200 - new to photography. Whenever I take photos of the night I always get this yellow mark in the same spot.
I thought it could be a dirty lens so I cleaned it with a microfiber ...
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Is the weird red and yellow patch near the center of my photo chromatic aberration?
I found this weird red and yellow thing in this shot taken using an EOS Rebel 1200D and the lens that came with it.
It looks surprisingly good;
how can I control and replicate these effects?
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How much flare should I expect with a Hoya HMC Filter?
After I did some review comparison (especially this one) I bought a 67mm Hoya HMC filter.
Then I took some comparison pictures. Do you think the flare is within the acceptable range?
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Why do I get white images with black vertical stripes?
Apparently my 3 year old Canon EOS 550D is fed up with my style of photography and decided to explore abstract arts instead. All it shows on the LCD and stores on the SD card is this:
When I attempt ...
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What is this black spot in images from my digital camera? [duplicate]
I've bought a used Panasonic Lumix DMC-ZX3, but the images show a dark spot near the center. It's more visible when zoomed in (first picture below), but it's also visible otherwise. It seems to be ...
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What is the cause of this unusual concentric blob defect (taken in below zero conditions)?
My brother took a number of pictures in the alps recently, and a few of these showed defects similar but not identical to the one below. The temperature was -14 C which doesn't seem unreasonably cold....
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How can one correct intensity flicker due to AC line frequency?
Is there a good image processing method to get rid of the horizontal stripes in the images taken under fluorescent lighting? These stripes (flicker) occur when you take pictures indoors due to the 50 ...
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Why are there two thin vertical lines through all of my photos?
I have a recently purchased Nikon 5100. Since purchase there is a series of two lines (in the same place) in the frame that show up on the pictures. Any guesses as to what they are and how I can get ...
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How can I avoid green flare on my sunrise photos?
I took a series of sunrise photos. Once the sun actually came above the horizon, the brighter the sun became the more apparent and brighter a green flare (glare?) appeared. How can I avoid that?
...
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what are these strange artifacts on this photo? [duplicate]
what are these strange artifacts on this photo?
how to avoid them?
photo is shot with canon 1200d 50mm f1.8 4seconds shutter
thank you
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What might cause horizontal artifacts in Lightroom after import?
I have some old photos on the SD card in my Sony A57. After importing into Lightroom, there are horizontal artifacts on most of the imported photos. This is a screen grab of Lightroom displaying one ...
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How to remove unwanted colors in picture? [duplicate]
I took product photos for my company and am currently editing them. However, some of the white parts of the shirt look a little odd zoomed out. When I zoom in, I see the following:
I'd like to ...
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Why are there white outlines around the subject in this photo when zoomed in?
Please give me a solution to this if possible. Image showing white outlines when zoomed.
Crop:
Zoomed:
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Can a ghostlike image be caused by a overlap with previous frame on an SD card?
Is it possible for a secure digital card to have a ghostlike image on a different frame,
ff you shoot digital cards and do not reformat them? Could a ghost image appear from a previous frame number if ...
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Why do photos of digital screens turn out the way they do? [duplicate]
When I take pictures of a screen at school or at my house, they turn out really weirdly. When blown up to 100%, they look fine, but when they get sized down, they look really weird, here is a ...
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What could have caused this splotch to appear?
amature photographer here. I recently took some photos of the area nearby where I am staying, and one of them caught my attention when going through them afterwards:
Notice that gray splotch at the ...
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Is high Chromatic Abberation typical with the Pentax f/1.8 50mm lens?
I recently bought a Pentax K-50 in a set with two lenses (18-55 & 50-200) as well as a 50mm fixed focal length lens. The camera is great but I am extremly disappointed in the lenses. Two out of ...
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