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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318 views

What image will I get if I attached a DSLR lens to an iPhone sensor?

As we all know, we will get a cropped image when we use the same lens on FF and APS-C. The image is kind of zoomed-in. THe image quality of the two images would depends on the sensor quality. If I ...
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39 views

Saturation Capacity and ADU

I'm having similar issues understanding the relationship between full well capacity and gain as shown in this question here: Reconciling gain (e/ADU), full well capacity and ADC bit depth The ...
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1answer
169 views

Quilted/Tiled Image Sensor: How do you eliminate stripes of missing photos in huge quilted sensors?

Background: This question is largely inspired by one of the answers in: What limits the size of digital imaging sensors? So the answer mentions uber-large image sensors that are made by "quilting" or ...
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2answers
430 views

Are colours from CCD sensors different compared to colours obtained from CMOS sensors?

I heard multiple times that cameras with CCD (I am talking about consumer DSLR) produce more lively or simply more pleasant colours. I think it's a myth but it's not clear to me how much basis it has ...
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2answers
232 views

Can I damage my camera by shooting directly at a lightbulb in the ceiling?

I got my first dSLR, a Nikon D3500, a few weeks ago. Today I was trying out manual mode and for some reason I thought it would be cool to shoot pointing directly at the lamp/lightbulb in the ceiling ...
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3answers
111 views

Transition between different film/sensor generations

During the history of photography, there has arguably been no component which has improved as much as the medium which records the light. The mainstream has gradually moved from glass plates, to 5x4&...
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1answer
80 views

Sensor damage due to overheating?

I have recently got a Fuji X-T4 and did some overheating tests in various 4k video modes. I repeatedly overheated the camera without a break to see where the limits for video shooting are. I know that ...
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1answer
155 views

Sensor spot/dust testing - should test shots be exposed to the right?

I recently bought a new camera and have been doing some sensor spot/dust testing. In some sites/guides/videos, aside from the usual setup (ISO 100, F/22, focus to infinity, shoot at a blank white wall,...
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Is there any difference in distance from Sensor to the lens (first glass) when we compare Sigma 24-70 2.8 and Sony 24-70 2.8?

I am looking to buy a 2.8 lens, I heard that Sony's lens is more closer to the sensor. Is that true ? Why I am asking this because, I heard (not sure) that one advantage of mirrorless camera's are ...
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188 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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Why are camera sensors green?

When I look at a CMOS sensor it's green. But CCD sensor. photos in the internet show pink sensors. So what exactly defines the color of an camera sensor? Especially what defines colors of the ...
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Why is the lowest ISO always 100?

The lowest ISO on digital cameras always seems to be 100. It would sometimes be useful to have much lower ISOs, mainly for long exposure photography. What isn't there any 50, 20, or even 10 ISO ...
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How can I easily tell if a sensor or lens is damaged?

I am pretty interested in recognizing any damage to digital camera in very low level (without any advanced tests). For example, how can I identify the damage of a sensor or lens? If there are any ...
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2answers
304 views

Which intervall between photos is recommended for shooting meteors?

I plan on shooting the Perseids meteor shower in one of the next nights (probably August 11-12). It is my first time (purposely) taking photos of meteors. I will be using my 18-55mm Kit lens (this is ...
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3answers
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How does long exposure photography work on digital cameras?

For analog photography it's pretty easy, the film is exposed to light during the exposure time, but what about digital sensors ? As far as I know a sensor can't "be exposed" for a long period of time,...
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575 views

What is the bokeh difference between 1/2.3“ f/0.95 cell phone and 1” f/1.8 compact camera?

I am thinking of buying a Sony RX100 (mark i). The thing is, I am gonna use it for pet, flower photography, and I really like the f/0.95 lens on my cell phone camera. It produces creamy bokeh with 1/...
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Why don't mainstream sensors use CYM filters instead of RGB?

From what I understand most digital cameras have a sensor where each pixel-sensor has three sub-sensors, each one with an R,G and B filter. RGB is obviously the more fundamental colour model since it ...
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1answer
368 views

Camera suddenly sees much less than usual

I've been out taking pictures all day without any real problems. After getting home I wanted to take one last quick shot, in that moment I realized my camera was struggling to turn on, after a while ...
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1answer
81 views

Can someone help me identify what's on my sensor?

I saw some dirt smudges on my photos the other day, so I decided to take my camera to a shop where they cleaned the sensor. The problem actually got worse, as the number of smudges increased and the ...
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335 views

Why does the green gain affect the blue and red values on a CMOS sensor with individual gain control?

I'm taking pictures of little surfaces (5 x 5 Millimeters) in an experimental setup with an ids camera that contains a cmos sensor. Afterwards the pictures are split into the 3 color channels (red, ...
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1answer
59 views

a6400 Red circle (light / flare) when getting close to darker subject

I run into a little issue today and can’t figure out the root cause. I have the a6400, when I get close to a subject, mostly black / dark fabric type of material, I will see a red dot (light / flare) ...
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3answers
290 views

Does lower resolution result in better signal-to-noise ratio, given the same sensor size?

With the release of the Canon EOS R5/R6, there have been many saying that they prefer the 20MP R6 camera over the 45MP R5 camera, due to its lower price but also because of "better low-light ...
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1answer
56 views

If sensor resolution numbers increase significantly from 12.1 MP to 50.6 MP, why's actual difference in horizontal width much less pronounced?

I don't understand the embolded phrase below from Camera Resolution Explained. Please explain like I'm 10. I'm unschooled at photography or physics. How's "the actual difference in horizontal ...
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What are these strange lines on images from my Fujifilm FinePix F850EXR?

My camera recently started displaying lines on captured images along with some discoloration (you don't see the lines or any discoloration when simply looking through the lens). There was no ...
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2answers
361 views

Does cleaning the camera sensor affect its autofocus capabilities?

I cleaned my dirty sensor of nikon d3400 few days back and the dirt spots are gone now. But a random thought came to me which is troubling me now. I wanted to know if cleaning the sensor could alter ...
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How much light and resolution is lost to color filter arrays?

Color digital cameras are typically implemented by putting a color filter array (CFA) like a Bayer filter, plus an infrared cut filter, in front of a sensor that is sensitive to light frequencies ...
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8answers
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Why are blown highlights particularly bad in digital photography?

I've heard that digital sensors are less "forgiving" of blown highlights than film. Why is this? There's something called "characteristic curves". How does this relate, in film and in digital? Can ...
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2k views

Canon 1Ds Mk II's scratched Low Pass filter. Now what?

Besides our workhorses (Canon 5D3 and 60D), we have an old camera - Canon 1Ds Mk II which has its OLPF scratched. That is, the camera works (ok, more or less because the signs of time are present on ...
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1answer
102 views

Is my sensor dying?

Please check this 100% crop of a night sky. I shot this on a Nikon D750 with a Nikkor 50mm f/1.4 D @ f/8, ISO 100, RAW format. I had already noticed that kind of noise / hot pixels (all these small ...
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55 views

Electronic shutter - what controls it?

From what I've read thus far, electronic shutter is a type of device that controls whether the image sensor is turned off or on non-mechanically. What exactly controls it and how does it turns the ...
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5answers
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Does change of lens affect a camera's megapixels?

I have a Nikon D40. It has only 6.1 MP. I am planning to buy additional lens for it. Can changing the lens of the camera increase or decrease the megapixels of the camera?
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428 views

pixel binning vs higher individual pixel size

Some smartphone cameras support pixel binning, to switch between high-res and low-light modes. An example would be the S20 ultra, which has an 108MP sensor that can bin pixels on a 3x3 grid, leading ...
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What covers a sensor, and what can we clean it with? [duplicate]

What can we clean camera sensors with? Generally googling returns 'ethanol'. Various people use ethanol for the job. What else can we use? Isopropyl alcohol, perhaps, eye glasses cleaner? The ...
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1answer
94 views

What causes this kind of sensor spots, and how do I clean it? [duplicate]

I get this spot in my images, on Sony A7III shot data: 0,8" second, F/36, ISO3200. Focused at closest point. Full Frame: Frame crop: As seen here, the spot is caused by dirt on the sensor: I ...
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2answers
212 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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3answers
329 views

Bayer color effective true resolution [duplicate]

Because in a typical digital camera, each pixel records only one color though use of a Bayer filter or similar mechanism to achieve color vision, the true resolution of a ## megapixel sensor is ...
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5answers
4k views

Why does BRIGHT red in direct sun come out orange?

I was at the NEC today dropping off a car for an auction, and took this quick photo (no intention to use for anything so no attempt at composition!) This was taken on a LG Nexus 5 mobile phone. I ...
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1answer
94 views

Is there any real need for substitute filters for a manual-focus, live view full spectrum conversion?

Assumption: If I have some cheap/used/partially-broken-but-picture-taking DSLM, and want to use it as an experimental full spectrum camera, the only downsides to cleanly removing the filter stack and ...
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6answers
2k views

Does a sensor count the number of photons that hits it?

I'm interested in the grayscale image case. In a sensor there is an array of cavities which collect photons. (Source: Cambridge in Colour Digital Camera Sensors) Does each cavity count the number of ...
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837 views

photon counting with a DSLR

I'm quite new to photography, but was wondering what settings I should have in order to have a good approximation of the relative number of photons that creates each pixel? i.e. best settings such ...
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1answer
3k views

Where is the AF sensor located in a DSLR?

As I understand every DSLR has a separate, smaller sensor that handles phase detection focusing. Where is it located? If this location is different for every DSLR, and therefore this broad question ...
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1answer
84 views

How to calculate a sensor size when all I know is focal length and resolution? [duplicate]

A lot of the related questions require variables that we simply do not have. I would like to calculate sensor size for a video camera. We have focal length and resolution but I do not know the field ...
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5answers
8k views

When comparing camera sensors, what does [x] µm Pixel mean, and what does it say about image quality

In this article (sorry its german) I read about camera sensors. They show values like 1,4 µm Pixel, or 1,55 Pixel. What does this mean, and how is it related to sensor size? If I got it right, a ...
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3answers
392 views

Is it better to shoot at diffraction limited aperture or sharpest lens aperture?

In the old cameras like Nikon D80 with 10 Megapixel pixel count. The diffraction limited aperture is F/13 but its known that lenses are generally sharpest at the F/8 so it's a no brainer to shoot at F/...
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3answers
269 views

Reason for offset in lens/sensor and tripod mount?

I have noticed that my Canon Powershot G11 tripod mount is more in the center of the body of the camera and not aligned with the lens/sensor. Is there a reason for this? My concern is that as I rotate ...
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1answer
98 views

Why was JFET-LBCAST such a short lived sensor technology?

I have been reading Wikipedia for a while and I realized Nikon developed this technology for a long time for their top of the line DSLR's and then abandoned it in the favor of the CMOS sensors. But ...
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2answers
120 views

Do different microlenses on EOS R / RP affect use with EF lenses?

I have read that EOS RP uses otherwise the same sensor as the 6D Mark II. However, RF mount has a lower flange focal distance than EF mount. Therefore, Canon has adjusted the microlenses in EOS RP to ...
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15answers
10k views

What is the best way to clean the sensor on a interchangeable lens camera (mirrorless or digital SLR)?

I've got a couple of spots of dust on the sensor of my Canon 20D. A rocket blower isn't shifting them, and I'm ridiculously scared of some of the more direct methods for cleaning sensors — what ...
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2answers
105 views

Is Sensor Noise Consistent Between Cameras of the Same Model?

The RAW photo editing program Darktable has a "Denoise - profiled" filter which reduces image noise by using a noise profiles for your camera model and ISO submitted by other users: The darktable ...
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3answers
2k 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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