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Why do phone cameras have "oil painting" like effect on human skin?

I've long noticed that phone cameras have an oil painting like effect on human skin. As phone cameras get better, the effect is less pronounced by it's still a significant difference from a bigger ...
erotsppa's user avatar
erotsppa
  • 3,308
2 votes
2 answers
97 views

Could a practical sensor measure time until pixel reaches threshold? [closed]

A typical digital camera sensor operates by capturing the analog state of each pixel after it has been active for some period of time. If some pixels would saturated in less time than it takes other ...
supercat's user avatar
supercat
  • 491
1 vote
1 answer
715 views

Full Well Capacity Questions

As I understand it, there are two potential limiting factors on full well capacity. a) adc bit depth and gain, b) pixel size and ability to absorb photons Whichever is the smaller value (in electrons),...
ItHertz's user avatar
ItHertz
  • 11
14 votes
3 answers
2k views

What are physical causes of clipping?

What exactly limits modern digital camera sensors in capturing light intensity beyond certain point?
Gill Bates's user avatar
Gill Bates
  • 181
5 votes
2 answers
501 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 ...
lijat's user avatar
lijat
  • 1,611
5 votes
3 answers
377 views

Is it possible for a camera to take different exposures at the same time with different ISO's?

I don't know exactly how ISO works within a digital camera, but from a video I saw, it described it as the camera essentially brightening the image from the sensor, given the same amount of light from ...
James Verdune's user avatar
James Verdune
  • 51
0 votes
2 answers
151 views

16-bit wysiwyg image? Not RAW [duplicate]

I like the dynamic range of RAW files, but I don't want raw sensor data, but I don't want 8-bit jpegs. What can I do to get the desired result? Request camera manufacturers to allow TIFF file ...
CQM's user avatar
CQM
  • 141
3 votes
4 answers
475 views

Can the same sensor have different dynamic range and color depth in different camera makes?

The Nikon D7000 and Sony A55 were found to have the same sensor. But during testing, which I understand is subjective- DxoMark (dubious reputation, I'm aware) revealed that the D7000 has a much ...
HelloWorld's user avatar
HelloWorld
  • 1,155
1 vote
3 answers
2k views

Are the stops of the dynamic range of a cameras sensor the same as the stops the light meter shows?

My name is Elefterios and I am studying photography and audiovisuals. Currently I'm on my last year doing my thesis project related to timelapse. On the HDR Timelapse chapter I'm writing a short ...
Elefterios H's user avatar
Elefterios H
  • 13
6 votes
2 answers
1k views

What factors affect the dynamic range of a sensor?

I understand what dynamic range is, but I'm interested in what it is that allows different sensors to have increased dynamic range over other sensors. For example, the classic explanation of a sensor ...
Undistraction's user avatar
Undistraction
  • 2,037
3 votes
1 answer
634 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. ...
backountry's user avatar
backountry
  • 31
2 votes
3 answers
378 views

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 ...
Undistraction's user avatar
Undistraction
  • 2,037
2 votes
1 answer
2k views

Will black level of one sensor reduce its dynamic range?

For one camera, the black level of the sensor will make the output non-zero when it is covered. For example the output of the sensor is 10bit and black level is 63, if the output is reduced by black ...
Jogging Song's user avatar
Jogging Song
  • 267
5 votes
1 answer
513 views

What do "dark current" and "sensitivity" mean for a camera module?

I am looking at a camera module to be used for a project which deals in shooting frames in dark areas and night conditions. This is a camera used from a circuit board. I have the following light ...
user2104710's user avatar
user2104710
  • 51
1 vote
1 answer
301 views

Why is a camera's dynamic range expressed as its photosite capacity divided by the read noise level?

For example, if a camera has a dynamic range of 44900/10, why would the range of greyscale levels available is equal to 4490? I know that 44900/10=4490 but this kind of reply didn't satisfy me. Let's ...
marco's user avatar
marco
  • 165
1 vote
2 answers
130 views

Same mfg process = same performance in FF vs. cropped sensor?

I've seen generalizations that full-frame sensors tend to exhibit better low-light performance and dynamic range than a cropped-sensor specifically because they tend to use larger photosites that ...
D. Lambert's user avatar
D. Lambert
  • 10.5k
3 votes
1 answer
485 views

What are the main limiting factors for dynamic range in modern cameras?

Another question got me thinking about what is limiting dynamic range in digital cameras. From my understanding the precision of the analogue-to-digital converter, i.e. how many discrete levels it can ...
Håkon K. Olafsen's user avatar
Håkon K. Olafsen
  • 3,196
2 votes
1 answer
202 views

Does a deeper photosite increase the dynamic range?

As I understand, a bigger photosite (on the sensor) enables a bigger dynamic range and also better high ISO performance. Is there a reason not to make the photosite deeper?
Itay Gal's user avatar
Itay Gal
  • 880
4 votes
2 answers
473 views

Why does the Pentax K-01 have less DR than the Pentax K-5?

I thought that the K-01 and the K-5 both sported the same sensor, but checking their specifications in Snapsort I found that their Dynamic Range is different by a little bit more than 1 EV (12.9 EV vs ...
fortran's user avatar
fortran
  • 1,735
18 votes
5 answers
10k views

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 ...
erotsppa's user avatar
erotsppa
  • 3,308
7 votes
1 answer
2k views

what's the relation between sensor size and image quality (noise, dynamic range)?

I'm reading this description on sensor size: Digital compact cameras have substantially smaller sensors offering a similar number of pixels. As a consequence, the pixels are much smaller, which ...
cody's user avatar
cody
  • 285
15 votes
8 answers
2k 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 ...
user avatar
user7264
23 votes
4 answers
4k views

How can dynamic-range be larger than sensor bit-depth?

Found something that confused me and so I thought the crowd here can probably answer this one since its camera-related and technical at the same time. How can dynamic-range be larger than sensor bit-...
Itai's user avatar
Itai
  • 103k
22 votes
6 answers
8k views

How many stops can a digital camera capture?

How many stops can a digital camera capture? Additionally, does anybody know what the dynamic range is for negative and positive film, the human eye, computer monitor, the television, etc...
Aristos's user avatar
Aristos
  • 1,506