Linked Questions

84
votes
4answers
12k views

What does an unprocessed RAW file look like?

I know people use fancy software like Lightroom or Darktable to post-process their RAW files. But what if I don't? What does the file look like, just, y'know, RAW?
18
votes
3answers
2k views

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 ...
15
votes
3answers
4k views

RAW files store 3 colors per pixel, or only one?

Ken Rockwell says that camera makers consider the individual R/G/B sensors when they talk about megapixels. So the image below would be a 6x6 pixel camera, not 3x3 as you would imagine. If that's ...
13
votes
4answers
3k views

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 ...
11
votes
3answers
2k views

Why can software correct white balance more accurately for RAW files than it can with JPEGs?

Why are post-processing JPEG white balance corrections not as accurate as white balance with Raw? My understanding is that when shooting jpeg the camera internally does the following steps: Convert ...
2
votes
5answers
360 views

Why and how capturing RAW image instead of JPEG helps with editing [duplicate]

Often I heard photographers say that RAW is used for editing photos. I have used Adobe Photoshop Lightroom before and I don't see how capturing RAW helps. Can anyone explain how capturing RAW helps ...
4
votes
4answers
160 views

Is it possible to buy chromaticity-plot color standards? If so, how, and where?

(I hope this is the correct site to ask this; if it isn't, sincere apologies ─ and please help me find a good place to ask :-).) I'm a physicist and I've been dabbling in color theory for some time, ...
0
votes
3answers
106 views

Megapixel number - how many sub pixels? [duplicate]

I read conflicting information about the megapixel - subpixel relationship when it comes to sensors in digital cameras. I read that megapixel is number of sub pixels and I also read megapixel is ...
0
votes
1answer
278 views

Opening NEF files on windows initially open file but then change contrast

I have a strange issue with Windows 10 When I open .nef files they load fine. However after a second or two the contrast changes noticeably. I tried Windows 10 Photos and Picasa Image Viewer. What ...
-3
votes
1answer
254 views

Heatmap of an image [closed]

I want to create the heatmap of an image for research purposes. Is there any algorithm to create heatmap of an image ? Also, if I have a RAW image out of a Nikon D5200 (.NEF file format), will it ...
1
vote
2answers
128 views

Shooting in RAW Format [closed]

I have a Pentax K100D Super and am just learning to shoot in RAW Format so far all my photos have come out very white lacking in colour particularly of water and surf
2
votes
4answers
180 views

Pixels and photodiodes

A photodiode is the smallest element of a digital sensor, while a pixel is the smallest piece of information in a digital image. I wonder if the two terms can be used interchangeably or there are some ...
0
votes
1answer
348 views

Reading raw12 file into 2-d array for further processing it into png format

I have a raw-12 image file . I want to read this using c++ into 2-d array . but i don't understand the the basic picture of raw-12 file that how pixels are really arranged in it. can anyone help ?
1
vote
1answer
150 views

Why do pure colors (red/green/blue) become a mixture of colors when converting raw?

In trying to understand how raw is converted, I created a synthetic raw image that has a red, green and blue gradient strip, with a gamma of 2.2 (dng). I made the synthetic raw by converting an image ...
0
votes
2answers
112 views

Is 24MP actually matched to Full-HD Resolution when factoring in the differences on how pixels are defined?

Naive assumption: 24MP sensor vs a Full HD monitor of 2MP, sensor has much more resolution. Second look: You sample something that is not synchronous to your sampling raster/clock, you need to ...

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