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Are pixels the same?


3 years 9 months ago #689377 by Tristan R
I saw a thread here that got me thinking about pixels from one brand to another.  Is a pixel a pixel from one manufacturer to another?   This is completely a random question, but had me thinking.  Is pixel the bridge that ties all cameras together with something of some common ground?  Or are the actual pixels, different?  

An atom is an atom, a molecule is a molecule in biology.  So what about pixels in the camera world? 
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3 years 9 months ago #689378 by Nikon Shooter
The very first consideration most will have about pixels is
the count for a given format — resolution is based on that.

But when it comes to element composition, it is like any-
thing else: the art of cooking and combining chemical and
physical properties — read electromagnetic and electronic.
Every maker works to reach the best formula and manufac-
turing processes.

But all does not stop there. The sensor recording is heavily
supported by softwares and this is where the real magic is.

The difference between potatoes, onions, or carrots is less
significant than the chef that holds the wooden spoon.
Light is free… capturing it is not!
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3 years 9 months ago #689379 by Shadowfixer1
No, not the same but sort of the same. Same principal but different designs. Size is a big factor. Think about the pixel size in one of the latest phones compared to something like a Sony A9. The micro-prism design would be unique also depending on each makers design and requirements. A basic pixel  generates a reading on light intensity and that portion they all do the same thing. From that point on it's a whole different ball game in micro-prisms, filter arrays, AD convertor and more.  
www.betterphoto.com/?ramshots
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3 years 9 months ago #689380 by garyrhook
A pixel ("picture element") is a concept. How it's made and what it does depends upon the manufacturer. For example, in a Canon DSLR the ratio of red-green-blue "buckets" in a pixel is 2-1-1. Nikon has a 1-2-1 ratio.
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3 years 9 months ago - 3 years 9 months ago #689423 by Shadowfixer1

garyrhook wrote: A pixel ("picture element") is a concept. How it's made and what it does depends upon the manufacturer. For example, in a Canon DSLR the ratio of red-green-blue "buckets" in a pixel is 2-1-1. Nikon has a 1-2-1 ratio.

But that is determined by the filter array, not the pixel itself. Fuji X-Trans has the most unique array. A pixel can't record color. The convertor knows what color of filter is on each pixel so it knows the intensity of that one specific color for that pixel. It knows nothing about the other colors from that pixel. Each pixel just measures intensity of light hitting it and each pixel just records the intensity for it's color. 
www.betterphoto.com/?ramshots
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3 years 9 months ago #689442 by garyrhook

Shadowfixer1 wrote:

garyrhook wrote: A pixel ("picture element") is a concept. How it's made and what it does depends upon the manufacturer. For example, in a Canon DSLR the ratio of red-green-blue "buckets" in a pixel is 2-1-1. Nikon has a 1-2-1 ratio.

But that is determined by the filter array, not the pixel itself. Fuji X-Trans has the most unique array. A pixel can't record color. The convertor knows what color of filter is on each pixel so it knows the intensity of that one specific color for that pixel. It knows nothing about the other colors from that pixel. Each pixel just measures intensity of light hitting it and each pixel just records the intensity for it's color. 


My point was that implementations can be unique.

I also think that the common understanding of a "pixel" is something that has three color parameters, but the manner by which each of those is measured can vary. Thus my mention of the Canon and NIkon arrays.
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3 years 9 months ago #689652 by Tristan R
Man so sorry for not getting back quicker guys.  Thank you very much for the answers here.  This helped a lot.  Interesting though.  
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