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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.

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Do Nikon sensor jpegs have a very slight yellow cast to them in the image compared to Canon?

I shoot with a Nikon D3400 and I am a beginner casual photographer. I shoot in maximum quality jpeg(NOT RAW) on auto white balance. Recently my friend and I were shooting some same subjects(my friend ...
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129 views

Why sensors won't cover full exposure circle?

Imagine that you have a round sensor that covers full circle that your lens can expose. Your camera should be able to shoot at any aspect ratio in any orientation. You won't have to rotate your camera ...
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Nikon agent denied sensor defect for stubborn black speck on the image

The stubborn black speck on the top right of the attached photo could not be removed by Singapore Nikon technician. The camera (Nikon D3400) is still under warranty. I was charged for the cleaning but ...
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41 views

Sensor Pixel Area in Canon SL2 [duplicate]

In the process of purchasing a Canon SL2, I did many side by side comparisons with other entry level DSLR's. One thing I noticed, is that the SL2's 13.84µm2 sensor pixel area, was noticeably smaller ...
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470 views

Half of image is black - D3400

Nikon D3400 lent to girlfriend for Halloween. Now half of the live view image is totally black; same on photos but not on menu displays. She "cleaned" it before returning, so is my sensor toast?
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94 views

What is etched into the surface of the digital camera sensor? [closed]

I'm thinking it's light sensitive receptors, but then it could possibly be either pixels or film as well. I'm not really sure. So, if anyone is completely certain of what is etched into the surface of ...
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2k views

What are physical causes of clipping?

What exactly limits modern digital camera sensors in capturing light intensity beyond certain point?
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49 views

Mobile camera sensor specifications (database?)

I already know sites as https://www.dxomark.com/Cameras/Camera-Sensor-Database which are good databases for detailed sensors specifications, especially regarding DSLR. But I would like to find ...
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3k views

Signal to Noise Ratio over the years

I've been enjoying Marc Levoy's Lectures on Digital Photography and have reached this point. Marc has broadly said: Sensors have got better at reducing noise But pixels are gotten smaller so there ...
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107 views

My sensors are not working after shooting at sunset sun

I have a Nikon D7000 with a AFS Nikkor 18-200 Dx with VR. I took a pix of the sun going behind a mountain, trying to NOT get the sun directly, but I did. It was 1/3 way down but still bright . The ...
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1answer
55 views

Will digital exposure above unity gain result in raw file with full bit depth?

As I understand, digital cameras have a unity gain ISO: an ISO setting at which no gain is applied. Below this ISO negative gain is applied, in effect ignoring some of the photons, and above positive ...
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2answers
133 views

Does the pixel count of the image sensor equate to the number of pixels of the image? [duplicate]

The Canon EOS 5D Mark IV has a 30.4 megapixel sensor. Does that mean that it can produce ~30 megapixel images?
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115 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 ...
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5answers
1k views

Does a long exposure in DSLR camera have a similar effect to a global shutter?

Regular DSLRs make use of mechanical shutters and progressive electrical readouts, and hence images are captured in a rolling shutter. But, when used to capture pictures with a long exposure, where ...
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2answers
143 views

How does on-sensor phase detection AF not impact the image?

My understanding is that some of the photosites on the sensor have additional functionality in them to measure phase, which in turn uses some of the energy that would have otherwise registered as ...
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3answers
97 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 ...
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1answer
47 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:- ...
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3answers
266 views

What are appropriate Circle of Confusion values for high-megapixel cameras? [duplicate]

Since the film days we have used 0.03 CoC for determining depth of field and similar calculations. In digital terms, does this best match with 6 or 12 or 24 or 36Mpixel full frame sensors? If this ...
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1answer
211 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 ...
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2answers
5k 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 Sensor Cleaning: Manual in the ...
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1answer
142 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 ...
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5answers
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.) ...
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1answer
501 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 ...
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3answers
102 views

Is the color reproduction of different cameras inherent to the sensor or due to software?

Often, reviewers and camera users talk about the 'Color Science' of a particular brand of digital camera, e.g. it is said that Sony digital cameras do not have good skin tones. Is this 'Color Science' ...
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1answer
186 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 ...
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4answers
529 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 ...
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2answers
114 views

Can using a high resolution sensor and downsampling compensate for a soft lens?

In this question Does super-sampling produce good results? the difference in quality between using a high and low resolution sensor of the same size and then downsampling the high resolution one gives ...
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2answers
4k 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)?
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3answers
609 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 ...
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1answer
123 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 ?
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1answer
66 views

Can dust or humidity affect the shift mechanism of a sensor stabilised camera?

Sony and Pentax, and probably others, use a shift mechanism in the sensor (movable sensor) for image stabilization. While I see many benefits with this approach, how are these sensors protected ...
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1answer
113 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 ...
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4answers
204 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'...
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0answers
33 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 ...
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0answers
261 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 ...
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3answers
127 views

Why are the lights fuzzy/hazy/blowing out in my pictures?

I just got a Canon 70D off eBay and have been taking night pictures and things were ok. Then, without warning, the lights in my pictures got blurry and hazy, maybe overblown. It's happened with both ...
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1answer
107 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.
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2answers
285 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 ...
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1answer
109 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 ...
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3answers
234 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 ...
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2answers
530 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 ...
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2answers
452 views

Can a dSLR sensor be replaced with one that belongs to another model?

My D7200 sensor needs replacement due to scratches and I've called a repair center (not a certified Nikon repair center) and they have offered me a reasonable price (about 200 USD). However, I've been ...
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1answer
85 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! ...
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1answer
175 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 ...
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1answer
205 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'...
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3answers
214 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 ...
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1answer
87 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 ...
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2answers
195 views

How close are we to the theoretic limits of sensor low-light performance?

Consider a low-light, high-ISO, short-exposure shot. We all know the image will be noisy. I understand that the image noise is dominated by the photon counting noise (shot noise) that is caused by ...
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2answers
647 views

Sensor scratch: how likely is this one to cause problems and would it worth a replace

Well, I have scratched my sensor, or since I made research, I'd better say the infrared filter on top of my sensor. I have made sure that this is a scratch after I had my sensor cleaned by the service ...
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1answer
71 views

Would too much sensor cleaning reduce image quality [duplicate]

Would too much sensor cleaning (wiping) impact the sharpness, dynamic range, and color depth?