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Noise Bad and Grain Sometimes Good?


7 years 9 months ago #488487 by 100ISOman
So I just researched that noise and grain have different causes as they are from different kinds of technology, but I'm curious, if I had to choose one of these artifacts in my photo, is grain always technically a better choice over noise? Does digital camera noise look worst/different than film grain?

I have a digital camera (5D MKII) and I found that when I compared the same shot and exposure levels with ISO 100 and 6400 being the only difference, the ISO 6400 picture actually looked pretty kool and just had a subtle grittiness to it. But maybe if I want that look, I'm better off adding it in photoshop by choosing the grain texture filter? 
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7 years 9 months ago #488524 by Hassner
I do not quite understand.
Do you want to add a grittiness to your digital images?
The aim of most photos is to catch as much detail as possible in the image.
Therefore the noise "correcting" software.
This is one of the advantages of digital over film.
With film you were stuck with the grain in the shot.
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7 years 9 months ago #488549 by Gus
I think it comes down to personal taste. I like the grittiness achieved in camera so when I want that look, that's what I do. Maybe give both a shot and see what tickles your fancy.
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7 years 9 months ago #488559 by Jerrid
Different causes, but look the same IMO.  

You can create this effect in post too.   
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7 years 9 months ago #488579 by 100ISOman
Yeah I want to add grittiness but I was wondering if it were better to choose grain textures in photoshop or to simply stick with a noisy picture taken at a high ISO. I wanted to know if there was a difference in appearance between grain and digital noise.
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7 years 9 months ago #488581 by 100ISOman
Interesting, relatively the same eh? Well I'll try both. I think with photoshop you can actually see very subtle, almost invisible square areas where the grain pattern repeats! Not sure if that's how it should look in the real world, but I'm sure the actual grains in that texture look real.
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7 years 9 months ago #488599 by Ontherocks

100ISOman wrote: Yeah I want to add grittiness but I was wondering if it were better to choose grain textures in photoshop or to simply stick with a noisy picture taken at a high ISO. I wanted to know if there was a difference in appearance between grain and digital noise.



Visually, they both look very similiar
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7 years 8 months ago #491015 by srubio77
When it comes to whether digital noise is acceptable or on par with film grain is a matter of personal taste. I prefer to add noise in post and capture as much detail as possible in my initial shots. One bothersome part about a noisy photograph is the color of "color noise" (when you have discolored pixels throughout your image). This picture that I found on google illustrates what I mean pretty well. To me, it's much less appealing than the grittiness you get with film grain.

www.photocascadia.com/blog/wp-content/up...03/8_Color-Noise.png
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