Questions tagged [sensor]
A sensor is the digital camera's equivalent to film. It contains millions of tiny light-detecting areas called photosites, which convert light into an electric charge. After exposing the sensor to light, this charge is read from each pixel and converted into a digital image.
515
questions
0
votes
2
answers
2k
views
Remove spot on sensor Olympus OM-D E-M10 [duplicate]
I've got a visible spot on the sensor of my OM-D E-M10 (Mark I). I think it's a tiny splatter. Can I clean it with a cotton swab and some alcohol for example? I assume there is a piece of glass in ...
- 175k
5
votes
4
answers
17k
views
Can the sun damage the sensor on a mirrorless camera?
I'm researching a good technique for taking pics of the upcoming solar eclipse and I want to use my Sony NEX-6 mirrorless camera.
I found this question here from 2010 but no one brings up mirrorless ...
1
vote
3
answers
436
views
How is wide field-of-view possible using a tiny sensor?
From looking at the FOV tables on this page, I can see that FOV is greatly reduced as sensor size decreases. It seems that 1/2.3 sensors would produced fields-of-view that are tiny, even at the ...
- 39.2k
0
votes
1
answer
92
views
Why would a webcam image be brighter in the corners, rather than in the middle?
I have a webcam mounted inside an integrating sphere, which is dimly lit by LED and produces nothing but sensor noise. It's part of a daft random number generator I built. This arrangement is like:-
...
- 39.2k
3
votes
1
answer
469
views
What could cause this strange purple stain in the image? Sensor damage?
Initial disclaimer, my hardware in question is a PTZ video surveillance camera (Hikvision DS-2DE5425IW-AE) which would make it off topic for Photography StackExchange.
However the issue I'm having is ...
- 27k
6
votes
2
answers
5k
views
Why is on sensor PDAF drastically slower than traditional PDAF?
Why is on sensor PDAF drastically slower than traditional PDAF? I assume the technology is the same, doesn't matter if the module is on the sensor or located behind a mirror. But the performance is ...
- 175k
12
votes
2
answers
9k
views
What would be causing a thick black diagonal line in front of my camera's sensor?
I have a Canon XTi. On every photo I take I have a thick diagonal black line appear on the photograph. See an example picture:
My next discovery came when I selected ...
- 674
3
votes
5
answers
2k
views
How to build an attachment to support lens?
I am using a D5200 and want to make an attachment to support the lens at a distance away from the camera body. (There will be no lens mounted to the camera. Then there will be a gap. Then the lens.)
...
- 5,521
11
votes
2
answers
28k
views
What camera companies make their own sensors?
Is it public knowledge what manufacturers make their own sensors and what import it from others?
I heard somewhere that Sony manufactures Nikon's high end sensors, but don't know about the others.
...
- 27k
1
vote
1
answer
4k
views
How do I detect sensor sun damage?
I'm still new to photography/videography and I'm at the learning stage so I'm asking for your experiences and expertise. I recently bought a SJCAM SJ6 Legend and I shot a 1 hour 30 min timelapse with ...
- 456
2
votes
1
answer
240
views
What is this fine grid on an image made using pinhole and Nikon D200?
I am a longtime photographer but not such an expert on the technical aspects of optics and digital sensors.
I've been experimenting with my Nikon D200 and a home-made paper pinhole, coloured black on ...
CommunityBot
- 1
2
votes
1
answer
5k
views
How can I tell if a scratch is directly on my sensor or on the filter above it?
I have what appears to be a scratch on my sensor. I can't see it on pictures taken with apertures larger than F16, but I do see them at F32. How can I tell if a scratch is directly on my sensor or on ...
- 27k
5
votes
1
answer
1k
views
How is spectral sensitivity of a camera calculated?
I understand that to recreate the spectral response of a camera's sensor, you need to use a monochromator/spectrometer to get calibrated images. But I'm not sure where you go from there. When looking ...
22
votes
6
answers
6k
views
Does the dpi number reported by camera in JPG have any meaning?
I have two cameras, a 6mpix Panasonic FZ8, and 14mpix Canon A2200.
When I compare shots from two cameras, one of differences I notice is
dpi number that camera reports in JPG info:
FZ8 reports dpi=...
- 31.7k
7
votes
4
answers
664
views
Can we improve phone cameras using separate sensors for each of RGB?
So I was reading all about the multi camera system on the new Huawei P20 Pro which really got me thinking about how we can use multiple cameras to improve image quality, especially in such a compact ...
- 175k
12
votes
2
answers
9k
views
How many pictures can you take with a Sony mirrorless camera before the sensor fails? [duplicate]
What is the frames limit of the mirrorless cameras sensor? When should it be changed (for example on the Sony a6000 series or on the Sony a7)?
- 175k
2
votes
2
answers
2k
views
Is there a way to know how much a Sony mirrorless camera was used for video?
I'm willing to buy an "as new" A6000 from someone who said to have quit photography and used this same A6000 for 2 recordings only. I can't visit the seller to see it for myself and I'd have three ...
CommunityBot
- 1
5
votes
3
answers
6k
views
How can I tell if a camera sensor is damaged?
I own a Sony a6500 and primarily use it for filmmaking. I was trying to clean the mirrorless sensor and used a rocket air blower to get dust out of the sensor but accidentally knocked it against the ...
CommunityBot
- 1
1
vote
1
answer
215
views
Where can I find an organic photoconductive film (OPF), Camera or Sensor alone?
This technology was announced in 2016, but I couldn't find any trace or update about it later. Is there any camera using it ? If not how can I buy any from Panasonic/Fujifilm ?
- 1,813
11
votes
6
answers
3k
views
Where is the color mosaic filter on a DSLR sensor?
I have been looking at this tutorial from Astostuff on taking off the hot mirror on a D70, but cannot figure out from the page where the color mosaic filter is located.
Is it possible to remove the ...
2
votes
1
answer
348
views
Removing sticky particle from sensor [duplicate]
I have two particles on the sensor of my Sony a6000. Both are round and about 0.3 mm in diameter.
The spots are only noticeable in bright areas and are easy to remove with Capture One's spot removal ...
- 24.8k
4
votes
3
answers
576
views
How to remove embedded sand from low pass/anti aliasing filter?
I have a canon 50d with obstructions on the sensor.
Before any cleaning:
I have tried to clean the filter with this kit.
After cleaning with a blower (All shots at F36, ISO 100, 135MM, of a white ...
- 2,245
4
votes
1
answer
2k
views
What camera used the largest EXR sensor, and which one offered the largest EXR pixels?
I learned to appreciate Fuji's EXR sensor technology for travel and reporting photography when I used a Fuji X10. But like with all compact cameras, I feel a larger sensor and / or pixel size would ...
1
vote
4
answers
323
views
How to get rid of black these black oil spots which a professional cleaning service said can't be fixed?
I am using a Canon EOS 7D. But my photos have black spots in the same position. I tried sensor cleaning from a professional and the result is the same. He told me that it is due to oil spots which can'...
2
votes
3
answers
6k
views
How does the spectral sensitivity of different sensors affect the resulting photo?
I am learning about light and color formation but I don't understand how does the sensitivity affects an image.
Take for instance the different sensitivities for two "cameras" for each RGB channel
...
1
vote
0
answers
38
views
Menu/Picture Preview NA, Automatic Focus not working
I have a Canon Rebel XSI. It is from 2008. Original everything except lense. I cannot get the menu option to display in any mode, pushing the button does nothing. I cannot get any pictures I recently ...
- 11
0
votes
1
answer
320
views
How is ISO and output communicated on CMOS sensors?
CMOS sensors have analog amplifiers for each pixel.
To my understanding, the pixels are set on a single wafer which can only handle one communication at a time. ISO values are most likely sent out ...
- 3,161
1
vote
2
answers
313
views
Big sensor and landscape photography, DoF
I've been an owner of point & shot cameras for some years. Now, I'm considering to move to bigger sensor cameras (4/3, asp-c) because I really hate the noise that small sensors produce on low ...
- 175k
7
votes
3
answers
622
views
Fancy technology cropped vs old technology full frame - Which will give better images?
After selling my 1Dmk2 last year the time has come to get myself a new body, all along I'd decided that I wanted to do more "wow" pictures, big landscapes and do some more portait photography (up ...
- 175k
1
vote
2
answers
1k
views
Which sensor "full frame" vs. APS-C (1.6 crop) gives more distortion?
Which sensor "full frame" vs. APS-C (1.6 crop) gives more distortion using the same lens? I mean, would a 10mm lens on a full frame camera show more or less distortion than if it were on an APS-C (1.6 ...
- 175k
4
votes
6
answers
2k
views
Have cropped digital sensors reached their peak design limits?
APS-C and smaller sensors seem to have plateaued off in terms of their megapixel counts, possibly due to diffraction limits. The ISO performance of these sensors has not increased substantially in the ...
CommunityBot
- 1
3
votes
1
answer
351
views
Should the sensor assembly on an Olympus E-PL7 move freely when power is off?
I just purchased (new) an E-PL7 as a backup for my aging E-PL6 body. It appears to function perfectly, but when powered off a slight clunking sound can be heard if the camera is lightly shaken along ...
- 5,414
1
vote
0
answers
649
views
Is the Panasonic GH5's sensor likely to get damaged while in my bag? [duplicate]
The Panasonic GH5's sensor is suspended in a magnetic field when in use, allowing it to move on 5-axis to stabilise the image.
However when not in use it is completely loose and flops around in its ...
- 9,060
1
vote
2
answers
357
views
What is it called when a camera generates files with more megapixels than the actual sensor provides?
I found in many Android devices that the "real array size", which is the actual pixel count of the camera sensor, is lower than the 4:3 Max picture the user can take. For example: Sensor Array = 1616 *...
- 143k
5
votes
1
answer
2k
views
What do those black image corners mean?
I've downloaded a sample RAW image from the brand new compact superzoom camera Sony DSC-RX10 Mark IV and opened in RAW Therapee 5.2.
As the camera is very new, the program doesn't know how to handle ...
- 1
3
votes
2
answers
390
views
Do colored LED lights produce less illuminance than traditional spotlights?
I'm shooting theater plays and starting to shoot some alternative fashion shows.
Many colored lights these days are LEDs, not white + gel as they used to be. Let's simplify things a bit and consider ...
- 175k
-4
votes
1
answer
237
views
Minimum sensor size to get a separation between the subject and the background [duplicate]
What is the minimum sensor size need to get a separation between the subject and the background (bokeh) ? Print size A5
Not using a DSLR . Assuming max aperture is f/2.8 at wide end.
5
votes
2
answers
488
views
How can Sony A7r iii get more dynamic range than A7r ii from the same sensor?
Acording to this article https://fstoppers.com/gear/sony-announces-a7r-iii-solid-improvements-built-around-previous-generations-424-201012 the Sony A7r iii uses the exact same sensor as it’s ...
- 103k
0
votes
1
answer
628
views
Is the Canon 650D still a good choice? [duplicate]
I am planning on getting my first DSLR soon. I'm torn between the 1300D and 650D because they are about the same price right now. I love the fact that the 650D has a movable touchscreen and a mic ...
- 46.5k
12
votes
3
answers
9k
views
Why don't comparisons of aperture take sensor size into account?
When one compares focal length, many times we use the 35mm equivalent length. A 50mm lens on an APS-C sensor camera(1.6x) would be a 80mm equiv. length on a full frame camera.
But when we state the ...
0
votes
3
answers
978
views
Effective focal length with crop sensor, and detail of image
I have in fact read the other threads, and I am still not clear on this topic.
For any given lens, say a 400mm EF or FX telephoto, I am shooting a subject in low light, for arguments sake lets say I ...
- 24.8k
0
votes
1
answer
368
views
Solid greenish horizontal line is showing on all the pictures captured from canon eos 1100d
How can I get rid of that line? Do I need to send it to service center? Can I use some canon software to manually remove those lines from pictures? This is my first DSLR and it's out of warranty! ...
- 175k
3
votes
2
answers
1k
views
Long exposure shots showing huge bright spot. What happened to my sensor?
Recently I noticed the appearance of a quite big spot of increased brightness and strange colour in my longer exposure photos.
I'm using a Samsung NX300m (I know, not a good camera for low light...).
...
- 175k
7
votes
1
answer
1k
views
Determining the size of the smallest resolvable detail for a given camera
My generic question:
Given camera specifications, e.g:
sensor resolution,
sensor image area,
pixel size (area),
optical size,
focal length (ratio),
fov (horizontal and/or vertical)
and ...
- 123
0
votes
2
answers
473
views
Is this scratch or just dirt?
The things I highlighted in the following photo, are they scratches on the sensor or just dirt?
CommunityBot
- 1
2
votes
1
answer
225
views
Why doesn't the shutter close (like it does in mirror-up mode) when changing lenses to protect from dust?
I've just noticed a lot of dust on my sensor and I had to send my camera to the service center to get my sensor cleaned. I've noticed that when I use the mirror up mode "the function that prevents ...
CommunityBot
- 1
4
votes
1
answer
613
views
Do I need to take bias frames for long exposure astrophotography?
I have read many places that for the best calibrated astrophotographs, you should be taking bias frames, dark frames, and flat frames.
But on a forum I read the following statement
You usually don'...
- 1,003
8
votes
4
answers
11k
views
How effective are in-camera integrated sensor cleaning systems, and have they improved?
Few years ago, Canon introduced some sort of internal sensor cleaning system that (as far as I understand it) shakes the sensor off any dust it collected during use. This shake is very high frequency.
...
- 32.7k
0
votes
3
answers
3k
views
How can I tell if a drop damaged my camera's sensor?
I dropped my Nikon D5500 recently from a height of around 3 ft onto a hard surface. Visibly, there is no damage to the camera. However, having handled some DSLRs, I think it's very unlikely that ...
CommunityBot
- 1
1
vote
4
answers
3k
views
Why does a more expensive camera have fewer pixels?
I compared the specs of some cameras.
The Canon EOS 5DS and the EOS-1D X MARK II each has a full-frame sensor. The second is more expensive. Their pixel counts are 8868 x 5792 and 5472 x 3648.
Nikon ...
CommunityBot
- 1
Hot Network Questions
- Why were there so many 'carrier killer' Kh-22 anti-ship missiles in Ukraine in the 1990s?
- How to combine multiple pure conditions with an AND operator?
- Is there a valid reason why Canon's webcam plugin asks to scan my external drives?
- macro to change line color in tikz
- How to avoid accidentally sharing proprietary information when working for a competitor of a former employer?
- Coauthorship of a paper with big name prof
- Client is ending the contract with my company, gave me an unusual offer to work for them directly
- Simplest way to create a clickable list in MacOS that will cause selected programs to run
- Can street names be normalized to single form?
- How to measure q-factor?
- Vexin' Markin's
- How do Christians address the "Bigfoot" analogy presented by skeptics in relation to the resurrection of Jesus?
- What is the provenance of this photo of the Great Lakes from space?
- How to represent BFS and DFS between adjacency matrix and list?
- Using explosive flux charges as an electric cannon power source
- Does AI-based trading assume efficient market hypothesis?
- Safely grounding 120V AC device
- Given gravitational lensing, why would black holes visually appear black?
- Film (maybe a parody) involving cyclops aliens and eating a cookie
- Air mixture in space suits?
- Is Alzheimer’s disease evidence for the non-existence of the soul?
- Would medieval humans know if an ancient civilization had existed and been wiped out?
- Can we use "It varies a lot" at the beginning of a new paragraph?
- Stealth on Titan (ground vehicles against satellites)