Linked Questions

2
votes
3answers
408 views

Are RAW images really RAW? [duplicate]

I am trying to find references on processing carried out inside the camera before the image is stored in RAW format. I am quite sure that some denoising is performed at the hardware level after the ...
0
votes
2answers
69 views

What exactly a Raw Image format encodes? [duplicate]

Ok, I have in mind that a picture P can be represented by a two dimensional matrix A where each element of A (aka every pixel) is a vector with four coordinates (Red,Green,Blue). What extra stuff is ...
0
votes
1answer
66 views

What would be the most technically unaltered/numerically close camera-to-monitor workflow using common software? [duplicate]

If the intention was to, as much as possible, shove the ADC output octets that were present in the camera right up the framebuffer and out the HDMI cable - possibly truncating LSBs, if possible ...
53
votes
6answers
22k views

Why are Red, Green, and Blue the primary colors of light?

Colors don't have to be a mixture of red, green, and blue because visible light can be any wavelengths in the 390nm-700nm range. Do primary colors really exist in the real world? Or did we select red, ...
16
votes
3answers
5k 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 ...
10
votes
5answers
2k views

What *exactly* is white balance?

When setting a white balance configuration, we adjust the temperature and green-magenta shift to a wavelength-intensity distribution of light that correlates most closely with the actual distribution ...
3
votes
4answers
16k views

Does converting RAW files to TIFF lose image quality?

Before I found out about Camera Raw, I used to convert my photos from RAW to TIFF, using the XNVIEW convertor, downloaded from the Internet. My question is whether I lost image quality or anything ...
1
vote
3answers
2k views

How sharp are RAW photos before processing?

Are RAW images by nature slightly blurry prior to processing? If I open them up in Lightroom and zoom into the photo, my photos are not tack sharp but a bit blurry. Once I process, it comes out ...
3
votes
2answers
690 views

Why would a camera change colors on the image when producing JPEGs?

There's a room with windows closed by curtains, it's night outside and the only light source is a set of LED filament lamps inside the room. Lamps are designed to have 2200K color temperature to have "...
2
votes
3answers
397 views

Why are all indoor pictures with my camera grainy?

I'm a beginner who just bought a Panasonic Lumix DC-FZ82 and expected better results than on my iPhone. I've consumed a bunch of how-to's and understand the basics of f-stops, ISO, shutter speed, etc....
4
votes
2answers
641 views

How exactly is the deeper bit-depth of RAW mapped onto JPEG and the display?

I am trying to understand RAW better. I have a Canon EOS 20D, and shoot in RAW+Jpeg mode. According to the specs in the manual, the RAWs of the 20D are 12 Bit. I understand that this means each pixel ...
0
votes
4answers
817 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 ...
2
votes
2answers
562 views

Lumix G7: Raw photos only in 1920x1440, no higher res available

On a G7 I bought used the images come with a 4592x3448 resolution for JPEG and 1920x1440 for raw. When I switch the mode to RAW only, the resolution/image size option in the menu is greyed out. Is ...
0
votes
3answers
233 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 ...
2
votes
4answers
586 views

How do I find out whether TIF images have gamma correction or not?

I have several DNG image files, recorded with an LGE Nexus 5X using Open Camera for Android as camera app. For further image processing i converted the DNG files to TIF files using Camera Raw 8 and ...
2
votes
2answers
193 views

Why RAW and JPEG look the same?

I recently bought a canon m100. I shoot both raw + jpeg but they look exactly the same. The only difference is the file size. Aren't raw photos supposed to have less contrast etc? I've tried to view ...
2
votes
4answers
353 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 ...
2
votes
2answers
187 views

Is tone mapping automatically applied to RAW images?

At first I thought tone mapping was a thing for HDR images only used to "display" the dynamic range which our monitors can't show. Turns out that RAW images tend to have a high dynamic range too. So ...
2
votes
3answers
120 views

How to get Shotwell to see Rawtherapee edits to RAW images?

I am trying out a workflow in Linux where I use Shotwell for image management, and Rawtherapee as the editor. If I view an image in Shotwell, and choose "Open in RAW Editor", make an edit, then go ...
0
votes
2answers
106 views

Does the Canon T7i apply lens correction options to raw format images?

I've seen some conflicting information on similar questions. I'm working with Lightroom and its lens correction option - I also have the in-camera lens correction option enabled. Does the in-camera ...
0
votes
1answer
143 views

Why is there difference in white balance between Canon and Nikon even in RAW files?

I have Nikon and Canon codec installed in windows 10 so I can open images directly. I also have lightroom for comparing images. When I open the same image shot on Nikon D3400 and Canon 200D on auto ...
1
vote
4answers
186 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, ...
1
vote
2answers
81 views

Emulate Shutter Duration on RAW Photos using Exposure Stacking

So I've been on this problem for about a year now and haven't been able to solve it. I gave up on it a while back, but now I'm researched up and ready to get an answer. I'm trying to fake a long ...