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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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Does the Canon EOS Rebel T5/1200D have any dust related problems?

I’m planning on purchasing the Canon EOS Rebel T5/1200D very soon. It’s the only DSLR that fits my budget (other one is the Nikon D3100 which I don't plan to get). I like everything about the camera ...
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4answers
129 views

Why does it seem like large sensors are necessary for good low-light performance?

Phone manufacturers have recently started advertising the size of the photosites on smartphone camera sensors. They argue that larger photosites lead to better low-light performance. I think a good ...
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1answer
202 views

Real world Dynamic Range

I am confused with the science of electronics, regarding cameras and sensors. I have read the posts and answers here and elsewhere. All I walk away with is the electronic specs of cameras and sensors. ...
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1answer
139 views

How Does A 5D Mk3 Generate The Histogram It Displays In Live View?

What is happening under the hood when a 5D Mk3 displays a histogram (luminance or RGB)? What exactly is the data it uses (raw sensor data, jpeg or something else)?
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1answer
54 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 ...
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2answers
836 views

Black dots on all photos

I took this image with a phone (some Sony). The lens is clean on the outside. The owner of the phone says those black dots started appearing and supposedly are multiplying. Is it some dust in the ...
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4answers
152 views

How does “crop factor” relate to the area of a sensor compared to full frame?

What is meant when someone says that a 1/2.3 sensor has a crop factor of 6.22? How many times the area of a 1/2.3 sensor is a full-frame sensor? Please include plenty of details. Another ...
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3answers
164 views

If I set my camera to lower resolution, does that mean more sensor area per image pixel?

My camera is the Nikon D3200 and the specs state that it has a Sensor Pixel Area of 14.85µm2 @ 24MP. When i set my camera to JPEG (fine), I have the ability to set the picture size. Would setting it ...
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1answer
52 views

Why the photos captured from my mobile camera doesn't give a same results in same conditions?

Last night I was trying to create a time-lapse of the Orion constellation. Setting all the camera settings to manual (max ISO my mobile camera allows 1600 , shutter speed 1 sec), I was trying to ...
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2answers
182 views

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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7answers
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Why don't sensors have a wider aspect ratio?

than 3:2, like 16:9 or 16:10? Given the popularity of widescreen TVs and computer monitors with wide aspect ratios, and that most photos are viewed on a screen, rather than printed, and that the eye ...
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3answers
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A/D conversion, processors marketed less actively than sensor characteristics?

In most literature about digital photography, there is some info-graphics about the path of the light signal from sensor to the storage. It starts with sensor, then there is the ...
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4answers
132 views

Why do camera manufacturers advertise image processors but not the sensor itself?

Camera manufacturers often advertise their image processors version in advertisements, such as DIGIC 6 (Canon), EXPEED 5A (Nikon) and many more. But we never see they advertise the sensor they are ...
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Why do electronic shutters expose row by row?

This question connects with my previous question, Why do cameras use a slit between two curtains rather than exposing the entire sensor instantly? This question is about why the slit thing comes with ...
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4answers
295 views

Why do cameras use a slit between two curtains rather than exposing the entire sensor instantly?

Why is it more effective to use "a slit travelling from top to bottom of the sensor" in faster shutter speeds, rather than exposing the entire sensor instantly? And the slit thing only comes in fast ...
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8answers
686 views

Why can't digital camera sensors expose each photosite individually?

Why is it impossible for camera sensors to function the way the human eye can? What I mean is, why does a certain portion of the image have to be over/underexposed if we compensate for dark and light ...
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2answers
63 views

photographing a full moon [duplicate]

I have photographed the moon zoomed out to 500mm or so with my Lumix FZ150 when the sky is not very dark and have successfully captured terrific detail in the moon's features. However, when trying to ...
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3k views

How common are hot pixels on new cameras?

How common are hot pixels on new cameras?! I read that people may check up to 5 cameras at stores to actually find a perfect one, is this true? so how commons is this? what is the chance of getting a ...
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13answers
4k views

What is the best way to clean the sensor on a 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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0answers
305 views

Is it normal for the Canon 6D to exhibit more color noise compared to a 50D?

My first day with 6D, upgraded from a 50D. Wouldn't be pixel-peeping but something unusual caught my eye when I opened photos in Lightroom this morning. The color noise pattern is completely different ...
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2answers
117 views

Effective focal length of kit 16-50mm lens on A6000 (APS-C 1.5x crop factor) [duplicate]

This is likely a tedious question for you guys but, as a camera noob, I'm miffed, so please bear with me. I have a: Sony A6000 (APS-C 1.5x crop sensor). With kit lens: SELP1650 lens (16-50mm) So, ...
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4answers
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Why does a bigger sensor have better dynamic range?

I already understand all the theory behind how a bigger sensor leads to better control of depth of field, and lower noise. But I've yet to find a place that can explain why a bigger sensor gives you a ...
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4answers
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Shooting 50mm EF vs EF-S

I have a Canon EOS 550D with a APS-C sensor. I have two lenses, (1) Canon EF-S 18-135mm f/3.5-5.6 IS and the (2) Canon EF 50mm f/1.8 Mk II. If I use the 50mm focal length in the first EF-S lens... I ...
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Why are larger sensors better at low light?

The top answer of What point and shoots are good in low light conditions? says that (1) a fast lens/wide aperture (2) reasonable ISO 400+ handling and (3) a large sensor when put together are critical ...
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Sony Full Frame E Mount Sensor Corners

Context I've seen the Canon 5D Mark III, Nikon D750 and A7R before. The sensor placement of the Nikon and Canon reveals the whole sensor if you look "down" the mount on the camera. On the A7r though ...
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Does A RAW file exist containing the full dynamic range of a natural scene with a ratio of 100,000:1?

I've just read Karl Lang's excellent whitepaper - Rendering the Print: the Art of Photography. In it, he mentions that the ratio of light to dark in a 'natural scene' can have a ratio of 100,000:1, a ...
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3answers
117 views

What causes noise floor in an image sensor?

In the book Image Sensors and Signal Processing for Digital Still Cameras, it says that Read noise, or noise floor, is defined as noise that comes from the readout electronics.Noise generated in a ...
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8answers
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What is Snapsort's “true resolution” score?

On Snapsort I found this explanation: True resolution Manufacturers advertise high megapixels to sell their cameras, Snapsort calculates the true resolution of each camera based on the ...
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2answers
179 views

Why is FF sharper than crop body for the same framing of the same object?

Take an FF body and a crop body, with similar MP rating - and the FF body will give a sharper image of the same object. At least, that seems to be the case - as here: ...
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3answers
14k views

What is the Chief Ray Angle (CRA)?

I want to select image sensors for a particular application. One term that I have come across regularly in their datasheets is the CRA. I was comparing 2 image sensors and although they were of ...
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2answers
312 views

Are these spots on the sensor or the lens? [duplicate]

Equipment is Canon EOS 5D3 (5760x3840) with a 24-105 f/4 L lens at 105mm, ISO 200. The following are crops from the same small (676x449) section of a couple of blue sky shots I did to test for sensor ...
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Why aren't there any cooled CCD sensors to reduce noise?

Sensor cooling is a common technology to get less noise. Why isn't it available on high-end D-SLRs ? (see http://www.andor.com/scientific_cameras/ikon-m_cooled_ccd/ for an extreme example) I'm not ...
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1answer
193 views

What is the sensor inside NIKON D3300?

Looking for a DSLR with Sony sensor inside, NIKON uses Sony EXMOR CMOS sensor in their DSLR. But there is no confirmation about what is the sensor used in NIKON D3300.
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2answers
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Can the “Dust Delete Data” function on Canon DSLR be used with Lightroom?

My camera is 6 months old and I noticed there is quite a few spots on the sensor (especially when taking HDR shots of bright scenes or the sky) The hand blower does not lift these particles off the ...
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1answer
373 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. ...
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2answers
6k views

What effect does a UV filter provide?

I know that I should always use a filter on my lens to protect the camera lens, however, exactly what impact to the picture does using a UV filter have — since that is the one most often used? I seem ...
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1answer
260 views

Using a full frame lens on a crop sensor camera [duplicate]

I have a Canon 70D APS-C sized sensor camera. I currently have a Sigma 10-20mm, a Canon 50mm 1.8, a Canon 75-300mm and of course the kit lens. I want to buy the Canon 24-105mm F4 L as an upgrade. I ...
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2answers
430 views

CCD sensors use a digital shutter. Why don't the more expensive CMOS sensors?

This answer mentions that CMOS sensors "cannot" use digital shutters where as CCD sensors can. Even if some models have the ability to, it is certainly typically for CMOS sensors to use mechanical ...
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6answers
663 views

Why is there no full-frame but low res sensor?

So I just watched a review on the Sony NEX-7, which is 24MP in APS-C size.... I am a Canon user and I immediately think about the announced Canon Powershot G1X with almost APS-C sensor but at a lower ...
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2answers
79 views

Is the anti alias filter really a blurring filter?

I'm trying to dig into the nature of how the anti aliasing filter works. This is of importance to me as I need to capture small details at the very edge of the resolution limit of the cameras lens as ...
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2answers
2k views

How does a sensor cause vignetting?

Vignetting is usually assigned to lens characteristics, or caused by light-blocking objects in front of a lens, like lens-hood or a filter. Is there vignetting (or vignetting-like effect) caused by ...
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1answer
154 views

Exmor RS. What value does it add to an 1" sensor?

Recently, new versions of Sony P&S cameras (DSC-RX10 II, DSC-RX100 IV) have emerged. They feature new 1" stacked CMOS image sensor called Exmor RS. I understand that this technology increases the ...
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1answer
195 views

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 ...
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1answer
83 views

How does ISO setting change CCD/CMOS sensor behavior? [duplicate]

In order to understand the technology in a digital camera, I considered the following question: How does ISO setting change CCD/CMOS sensor behavior? For example, does ISO setting affect the amount ...
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1answer
292 views

In terms of “image quality”, is the sensor the only spec of a DSLR I should look at when shooting RAW?

There are so many specs which don't have any influence on your RAW file. I'm trying to isolate the factors that matter for image quality only. For example, I'm not sure about the processor : of ...
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1answer
73 views

Blur each pixel independently on sensor to reduce moire effect

If I understand correctly, sensors can produce a moire effect because their subpixels are separate (each one is affected by a different portion of the image), so to stop this effect, some cameras have ...
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1answer
177 views

How is a Bayer filter manufactured?

Following on from an earlier question about bayer filters, it got me wondering: How are they actually manufactured? How do they apply such a small amount of dye to each sub pixel? My best guess ...
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5answers
10k views

Why and how do “bigger pixels” make a better picture?

This is going off of today's iPhone 5S announcement, when Phil Schiller said that "bigger pixels" is the key to a better picture. What does this mean? Is it true or just a marketing ploy?
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6answers
296 views

Why does Sony say that a 35mm lens is “35mm equivalent when used with an APS-C camera?”

I'm thinking of getting a Sony A6000 with a Sony SEL35F18 Lens. I'm a little confused about the actual focal length (and/or field of view) of the lens when attached to an APS-C sized sensor. The ...
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6answers
13k views

Can a laser pointer damage the sensor in a digital camera?

I once experimented with standing in a dark room and directing a laser pointer towards my digital camera with a long shutter speed while moving the two about. I made a few images that way; one was ...