What are these pixel-level discolored specks? How can I fix it?Hot, stuck, or dead pixels. What's the...
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What are these pixel-level discolored specks? How can I fix it?
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What are these pixel-level discolored specks? How can I fix it?
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I recently noticed some weird discolored specks in my images, and I thought it was a lens issue, so I tried cleaning the lens. The specks got a tiny bit smaller, but unfortunately still there.
I took two pictures of a wall (apologies for awful quality), before and after the cleaning.
Before (zoomed way in):
After (zoomed way in, same location):
I'm pretty new to photography, so I didn't find anything dust related. I thought it could be sensor damage, but I've never taken direct images of the sun and I don't take outdoor pictures much either.
How can I fix this? Any help is appreciated, thanks!
fujifilm cleaning dust fujifilm-x-t20
New contributor
|
show 2 more comments
I recently noticed some weird discolored specks in my images, and I thought it was a lens issue, so I tried cleaning the lens. The specks got a tiny bit smaller, but unfortunately still there.
I took two pictures of a wall (apologies for awful quality), before and after the cleaning.
Before (zoomed way in):
After (zoomed way in, same location):
I'm pretty new to photography, so I didn't find anything dust related. I thought it could be sensor damage, but I've never taken direct images of the sun and I don't take outdoor pictures much either.
How can I fix this? Any help is appreciated, thanks!
fujifilm cleaning dust fujifilm-x-t20
New contributor
Try another lens? It looks like a hot pixel (to some extent a normal thing) or possibly a problem with the lens coating / cleanliness. A different lens completely is the best way to say lens vs camera.
– AthomSfere
7 hours ago
1
Possible duplicate of Why some pixels become hot pixels?
– Hueco
7 hours ago
@AthomSfere unfortunately i'm just starting and i don't have another lens :(
– zli
7 hours ago
@Hueco ah thanks, I've never heard of hot pixels. I looked through my older photos and it seems that there are a few more that come and go. i.e. some photos don't have these hot pixels, but have it in other locations. is there a way to fix this?
– zli
7 hours ago
1
I'm not convinced these are hot pixels. If your camera has an automatic sensor cleaning routine, run it a few times and then try your test again. Do the spots move? What happens when you use a wider aperture (using the same ISO and shifting the shutter time)? What happens when you use a narrower aperture?
– Michael C
6 hours ago
|
show 2 more comments
I recently noticed some weird discolored specks in my images, and I thought it was a lens issue, so I tried cleaning the lens. The specks got a tiny bit smaller, but unfortunately still there.
I took two pictures of a wall (apologies for awful quality), before and after the cleaning.
Before (zoomed way in):
After (zoomed way in, same location):
I'm pretty new to photography, so I didn't find anything dust related. I thought it could be sensor damage, but I've never taken direct images of the sun and I don't take outdoor pictures much either.
How can I fix this? Any help is appreciated, thanks!
fujifilm cleaning dust fujifilm-x-t20
New contributor
I recently noticed some weird discolored specks in my images, and I thought it was a lens issue, so I tried cleaning the lens. The specks got a tiny bit smaller, but unfortunately still there.
I took two pictures of a wall (apologies for awful quality), before and after the cleaning.
Before (zoomed way in):
After (zoomed way in, same location):
I'm pretty new to photography, so I didn't find anything dust related. I thought it could be sensor damage, but I've never taken direct images of the sun and I don't take outdoor pictures much either.
How can I fix this? Any help is appreciated, thanks!
fujifilm cleaning dust fujifilm-x-t20
fujifilm cleaning dust fujifilm-x-t20
New contributor
New contributor
edited 6 hours ago
zli
New contributor
asked 8 hours ago
zlizli
334 bronze badges
334 bronze badges
New contributor
New contributor
Try another lens? It looks like a hot pixel (to some extent a normal thing) or possibly a problem with the lens coating / cleanliness. A different lens completely is the best way to say lens vs camera.
– AthomSfere
7 hours ago
1
Possible duplicate of Why some pixels become hot pixels?
– Hueco
7 hours ago
@AthomSfere unfortunately i'm just starting and i don't have another lens :(
– zli
7 hours ago
@Hueco ah thanks, I've never heard of hot pixels. I looked through my older photos and it seems that there are a few more that come and go. i.e. some photos don't have these hot pixels, but have it in other locations. is there a way to fix this?
– zli
7 hours ago
1
I'm not convinced these are hot pixels. If your camera has an automatic sensor cleaning routine, run it a few times and then try your test again. Do the spots move? What happens when you use a wider aperture (using the same ISO and shifting the shutter time)? What happens when you use a narrower aperture?
– Michael C
6 hours ago
|
show 2 more comments
Try another lens? It looks like a hot pixel (to some extent a normal thing) or possibly a problem with the lens coating / cleanliness. A different lens completely is the best way to say lens vs camera.
– AthomSfere
7 hours ago
1
Possible duplicate of Why some pixels become hot pixels?
– Hueco
7 hours ago
@AthomSfere unfortunately i'm just starting and i don't have another lens :(
– zli
7 hours ago
@Hueco ah thanks, I've never heard of hot pixels. I looked through my older photos and it seems that there are a few more that come and go. i.e. some photos don't have these hot pixels, but have it in other locations. is there a way to fix this?
– zli
7 hours ago
1
I'm not convinced these are hot pixels. If your camera has an automatic sensor cleaning routine, run it a few times and then try your test again. Do the spots move? What happens when you use a wider aperture (using the same ISO and shifting the shutter time)? What happens when you use a narrower aperture?
– Michael C
6 hours ago
Try another lens? It looks like a hot pixel (to some extent a normal thing) or possibly a problem with the lens coating / cleanliness. A different lens completely is the best way to say lens vs camera.
– AthomSfere
7 hours ago
Try another lens? It looks like a hot pixel (to some extent a normal thing) or possibly a problem with the lens coating / cleanliness. A different lens completely is the best way to say lens vs camera.
– AthomSfere
7 hours ago
1
1
Possible duplicate of Why some pixels become hot pixels?
– Hueco
7 hours ago
Possible duplicate of Why some pixels become hot pixels?
– Hueco
7 hours ago
@AthomSfere unfortunately i'm just starting and i don't have another lens :(
– zli
7 hours ago
@AthomSfere unfortunately i'm just starting and i don't have another lens :(
– zli
7 hours ago
@Hueco ah thanks, I've never heard of hot pixels. I looked through my older photos and it seems that there are a few more that come and go. i.e. some photos don't have these hot pixels, but have it in other locations. is there a way to fix this?
– zli
7 hours ago
@Hueco ah thanks, I've never heard of hot pixels. I looked through my older photos and it seems that there are a few more that come and go. i.e. some photos don't have these hot pixels, but have it in other locations. is there a way to fix this?
– zli
7 hours ago
1
1
I'm not convinced these are hot pixels. If your camera has an automatic sensor cleaning routine, run it a few times and then try your test again. Do the spots move? What happens when you use a wider aperture (using the same ISO and shifting the shutter time)? What happens when you use a narrower aperture?
– Michael C
6 hours ago
I'm not convinced these are hot pixels. If your camera has an automatic sensor cleaning routine, run it a few times and then try your test again. Do the spots move? What happens when you use a wider aperture (using the same ISO and shifting the shutter time)? What happens when you use a narrower aperture?
– Michael C
6 hours ago
|
show 2 more comments
2 Answers
2
active
oldest
votes
Looks like a hot pixel (the white pixel in the lower half of the picture is more conspicuous than the blue pixel in the upper half and will likely be green before demosaicing). Hot pixels tend to become more apparent with longer exposures. Basically a sensor deficiency, either temporarily or permanent.
thanks! what causes the sensor deficiency? is there a way to fix it?
– zli
7 hours ago
1
@zli Pushed enough, all sensors will show hot pixels. Longer exposures, high ISO, higher ambient temperatures, less signal (light), etc. will make them more noticeable. When shooting a bright scene, the hot pixels are usually lost in the abundant light falling on the sensor. When shooting in very low light or grossly underexposing, there's not enough light to drown out the hot pixels. It's covered at Hot, stuck, or dead pixels. What's the difference? and How to prevent hot pixels?
– Michael C
6 hours ago
add a comment
|
I ran a few more tests, thanks to @Michael C's pointers. Here are the following results:
no change to sensor:
- f/2.8, 1/6", ISO 200
- Blue specks (similar to the top speck in the sample pictures)
- f/10, 2.0", ISO 200
- White specks (similar to the bottom speck in the sample pictures)
manual sensor cleaning:
- f/2.8, 1/6", ISO 200
- Blue specks in the exact same location, but smaller
- f/10, 1.8", ISO 200
- White specks in the exact same location, but smaller
pixel mapping:
- f/2.8, 1/7", ISO 200
- as far as I can tell, nothing!
- f/10, 1.9", ISO 200
- as far as I can tell, nothing!
I guess the pixel mapping solved it! Thanks for all the information everyone, I'll keep it in mind for the future
New contributor
add a comment
|
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2 Answers
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2 Answers
2
active
oldest
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Looks like a hot pixel (the white pixel in the lower half of the picture is more conspicuous than the blue pixel in the upper half and will likely be green before demosaicing). Hot pixels tend to become more apparent with longer exposures. Basically a sensor deficiency, either temporarily or permanent.
thanks! what causes the sensor deficiency? is there a way to fix it?
– zli
7 hours ago
1
@zli Pushed enough, all sensors will show hot pixels. Longer exposures, high ISO, higher ambient temperatures, less signal (light), etc. will make them more noticeable. When shooting a bright scene, the hot pixels are usually lost in the abundant light falling on the sensor. When shooting in very low light or grossly underexposing, there's not enough light to drown out the hot pixels. It's covered at Hot, stuck, or dead pixels. What's the difference? and How to prevent hot pixels?
– Michael C
6 hours ago
add a comment
|
Looks like a hot pixel (the white pixel in the lower half of the picture is more conspicuous than the blue pixel in the upper half and will likely be green before demosaicing). Hot pixels tend to become more apparent with longer exposures. Basically a sensor deficiency, either temporarily or permanent.
thanks! what causes the sensor deficiency? is there a way to fix it?
– zli
7 hours ago
1
@zli Pushed enough, all sensors will show hot pixels. Longer exposures, high ISO, higher ambient temperatures, less signal (light), etc. will make them more noticeable. When shooting a bright scene, the hot pixels are usually lost in the abundant light falling on the sensor. When shooting in very low light or grossly underexposing, there's not enough light to drown out the hot pixels. It's covered at Hot, stuck, or dead pixels. What's the difference? and How to prevent hot pixels?
– Michael C
6 hours ago
add a comment
|
Looks like a hot pixel (the white pixel in the lower half of the picture is more conspicuous than the blue pixel in the upper half and will likely be green before demosaicing). Hot pixels tend to become more apparent with longer exposures. Basically a sensor deficiency, either temporarily or permanent.
Looks like a hot pixel (the white pixel in the lower half of the picture is more conspicuous than the blue pixel in the upper half and will likely be green before demosaicing). Hot pixels tend to become more apparent with longer exposures. Basically a sensor deficiency, either temporarily or permanent.
answered 7 hours ago
user87006
thanks! what causes the sensor deficiency? is there a way to fix it?
– zli
7 hours ago
1
@zli Pushed enough, all sensors will show hot pixels. Longer exposures, high ISO, higher ambient temperatures, less signal (light), etc. will make them more noticeable. When shooting a bright scene, the hot pixels are usually lost in the abundant light falling on the sensor. When shooting in very low light or grossly underexposing, there's not enough light to drown out the hot pixels. It's covered at Hot, stuck, or dead pixels. What's the difference? and How to prevent hot pixels?
– Michael C
6 hours ago
add a comment
|
thanks! what causes the sensor deficiency? is there a way to fix it?
– zli
7 hours ago
1
@zli Pushed enough, all sensors will show hot pixels. Longer exposures, high ISO, higher ambient temperatures, less signal (light), etc. will make them more noticeable. When shooting a bright scene, the hot pixels are usually lost in the abundant light falling on the sensor. When shooting in very low light or grossly underexposing, there's not enough light to drown out the hot pixels. It's covered at Hot, stuck, or dead pixels. What's the difference? and How to prevent hot pixels?
– Michael C
6 hours ago
thanks! what causes the sensor deficiency? is there a way to fix it?
– zli
7 hours ago
thanks! what causes the sensor deficiency? is there a way to fix it?
– zli
7 hours ago
1
1
@zli Pushed enough, all sensors will show hot pixels. Longer exposures, high ISO, higher ambient temperatures, less signal (light), etc. will make them more noticeable. When shooting a bright scene, the hot pixels are usually lost in the abundant light falling on the sensor. When shooting in very low light or grossly underexposing, there's not enough light to drown out the hot pixels. It's covered at Hot, stuck, or dead pixels. What's the difference? and How to prevent hot pixels?
– Michael C
6 hours ago
@zli Pushed enough, all sensors will show hot pixels. Longer exposures, high ISO, higher ambient temperatures, less signal (light), etc. will make them more noticeable. When shooting a bright scene, the hot pixels are usually lost in the abundant light falling on the sensor. When shooting in very low light or grossly underexposing, there's not enough light to drown out the hot pixels. It's covered at Hot, stuck, or dead pixels. What's the difference? and How to prevent hot pixels?
– Michael C
6 hours ago
add a comment
|
I ran a few more tests, thanks to @Michael C's pointers. Here are the following results:
no change to sensor:
- f/2.8, 1/6", ISO 200
- Blue specks (similar to the top speck in the sample pictures)
- f/10, 2.0", ISO 200
- White specks (similar to the bottom speck in the sample pictures)
manual sensor cleaning:
- f/2.8, 1/6", ISO 200
- Blue specks in the exact same location, but smaller
- f/10, 1.8", ISO 200
- White specks in the exact same location, but smaller
pixel mapping:
- f/2.8, 1/7", ISO 200
- as far as I can tell, nothing!
- f/10, 1.9", ISO 200
- as far as I can tell, nothing!
I guess the pixel mapping solved it! Thanks for all the information everyone, I'll keep it in mind for the future
New contributor
add a comment
|
I ran a few more tests, thanks to @Michael C's pointers. Here are the following results:
no change to sensor:
- f/2.8, 1/6", ISO 200
- Blue specks (similar to the top speck in the sample pictures)
- f/10, 2.0", ISO 200
- White specks (similar to the bottom speck in the sample pictures)
manual sensor cleaning:
- f/2.8, 1/6", ISO 200
- Blue specks in the exact same location, but smaller
- f/10, 1.8", ISO 200
- White specks in the exact same location, but smaller
pixel mapping:
- f/2.8, 1/7", ISO 200
- as far as I can tell, nothing!
- f/10, 1.9", ISO 200
- as far as I can tell, nothing!
I guess the pixel mapping solved it! Thanks for all the information everyone, I'll keep it in mind for the future
New contributor
add a comment
|
I ran a few more tests, thanks to @Michael C's pointers. Here are the following results:
no change to sensor:
- f/2.8, 1/6", ISO 200
- Blue specks (similar to the top speck in the sample pictures)
- f/10, 2.0", ISO 200
- White specks (similar to the bottom speck in the sample pictures)
manual sensor cleaning:
- f/2.8, 1/6", ISO 200
- Blue specks in the exact same location, but smaller
- f/10, 1.8", ISO 200
- White specks in the exact same location, but smaller
pixel mapping:
- f/2.8, 1/7", ISO 200
- as far as I can tell, nothing!
- f/10, 1.9", ISO 200
- as far as I can tell, nothing!
I guess the pixel mapping solved it! Thanks for all the information everyone, I'll keep it in mind for the future
New contributor
I ran a few more tests, thanks to @Michael C's pointers. Here are the following results:
no change to sensor:
- f/2.8, 1/6", ISO 200
- Blue specks (similar to the top speck in the sample pictures)
- f/10, 2.0", ISO 200
- White specks (similar to the bottom speck in the sample pictures)
manual sensor cleaning:
- f/2.8, 1/6", ISO 200
- Blue specks in the exact same location, but smaller
- f/10, 1.8", ISO 200
- White specks in the exact same location, but smaller
pixel mapping:
- f/2.8, 1/7", ISO 200
- as far as I can tell, nothing!
- f/10, 1.9", ISO 200
- as far as I can tell, nothing!
I guess the pixel mapping solved it! Thanks for all the information everyone, I'll keep it in mind for the future
New contributor
New contributor
answered 5 hours ago
zlizli
334 bronze badges
334 bronze badges
New contributor
New contributor
add a comment
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add a comment
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zli is a new contributor. Be nice, and check out our Code of Conduct.
zli is a new contributor. Be nice, and check out our Code of Conduct.
zli is a new contributor. Be nice, and check out our Code of Conduct.
zli is a new contributor. Be nice, and check out our Code of Conduct.
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Try another lens? It looks like a hot pixel (to some extent a normal thing) or possibly a problem with the lens coating / cleanliness. A different lens completely is the best way to say lens vs camera.
– AthomSfere
7 hours ago
1
Possible duplicate of Why some pixels become hot pixels?
– Hueco
7 hours ago
@AthomSfere unfortunately i'm just starting and i don't have another lens :(
– zli
7 hours ago
@Hueco ah thanks, I've never heard of hot pixels. I looked through my older photos and it seems that there are a few more that come and go. i.e. some photos don't have these hot pixels, but have it in other locations. is there a way to fix this?
– zli
7 hours ago
1
I'm not convinced these are hot pixels. If your camera has an automatic sensor cleaning routine, run it a few times and then try your test again. Do the spots move? What happens when you use a wider aperture (using the same ISO and shifting the shutter time)? What happens when you use a narrower aperture?
– Michael C
6 hours ago