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03/09/2013 08:04:03 PM · #1 |
Take a photo that effectively uses noise grain to make an impact on the viewer. Use of High ISO recommended, adding noise in post production is Ok too.
eta. - Or just call it Image Grain V...
Image Grain
Image Grain II
Image Grain III
Image Grain IV
Message edited by author 2013-03-09 20:07:20.
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03/09/2013 08:06:51 PM · #2 |
| just to be clear, are you distinguishing between "noise" and "grain"? |
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03/09/2013 08:08:01 PM · #3 |
Originally posted by tanguera:
just to be clear, are you distinguishing between "noise" and "grain"? |
See edited OP! But can you also explain the difference?
Message edited by author 2013-03-09 20:08:44.
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03/09/2013 09:17:23 PM · #4 |
| Yeah I love noisey grainy images, bring another one on anytime! |
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03/09/2013 09:18:31 PM · #5 |
| Personally, I've never quite appreciated the difference between noise and grain. |
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03/09/2013 09:36:10 PM · #6 |
There are those who will actually be able to tell you a technical difference between the two, but I think of noise as something that is a result of high ISO, mostly in low light conditions, while grain can be added via pp'g, or if using film, by film type. Noise seems to be color, grain monochrome.
But I'm just hypothesizing. |
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03/10/2013 07:42:47 AM · #7 |
Yes the same difference really.Grain is film stuff and Noise is digital stuff.
So it should be Noise
Yes please,to the challenge. |
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03/10/2013 01:16:02 PM · #8 |
Originally posted by gcoulson:
Personally, I've never quite appreciated the difference between noise and grain. |
In film, the photo-sensitive chemicals are comprised of actual physical granules (grains) randomly scattered over and affixed to the background. They are slightly different shapes and sizes, and can be seen with a strong magnifying glass or substantial enlargement in printing.
With a digital sensor, the photosensitve elements are all the same size and are in a geometrically regular array. You get digital "noise" when one of those cells sends back slightly different data than the surrounding cells to that an individual pixel shows up as a different color. The more sensitive the sensor (higher ISO setting) or hotter it gets (ambient conditions or long exposures) the more common for there to be slight variations in the signal (voltage) sent by the individual sensor elements, which show up as specks or off-colors (a.k.a. "noise").
Both color and B&W films have grain, and it is more noticable in high-ISO films because the grains in those films are physically larger than in the slower films.
Effectively, the major difference is that film grain is more random than digital noise, and may interfere less than digital noise with the image itself.
Most sensors have twice as many green sensors as blue or red, and the Green will thus usually be the smoothest of the three channels; I often convert to grayscale by just copying the Green channel, rather than merging the three channels. Conversely, the Blue channel is often the noisiest, so if I want a gritty, grainy look I'll copy or accentuate the Blue channel alone. |
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03/10/2013 01:31:14 PM · #9 |
| Paul nailed it; grain, as in "film grain" has a certain randomness to it: not every individual "grain" is identical. Film grain has a lovely, organic feel to it. "Noise" on a digital sensor introduces granularity, but the granularity is entirely regular, so it seems unnatural. Certain Topaz and Nik plugins both offer film emulation modules that randomize grain in specific ways and look more natural. |
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03/10/2013 02:17:52 PM · #10 |
well I sure hope that they can be added in post if they do this challenge. Technology is so good on newer cameras that it's sometimes tough to get noise in the images without purposely underexposing a couple of stops.
Matt |
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03/10/2013 02:34:11 PM · #11 |
Originally posted by MattO:
well I sure hope that they can be added in post if they do this challenge. Technology is so good on newer cameras that it's sometimes tough to get noise in the images without purposely underexposing a couple of stops.
Matt |
Try using the Channel Mixer to emphasize the Blue channel and you can probably add some noise/grain.You could also shoot at higher-than-necessary a ISO setting and compensate with faster speeds and smaller apertures.
Originally posted by Basic Editing Rules:
You May:
⢠use filters or stand-alone utilities designed to preserve image integrity (such as Neat Image, Unsharp Mask, Dust & Scratches, and color correction tools). These filters must be applied uniformly to the entire image, and must not be used in such a way that their use becomes a feature. No âeffectsâ filters may be applied to your image, with the exception of Noise and Gaussian Blur.
⢠saturate, desaturate or change the colors of your entry, but no selections are allowed. |
Originally posted by Advanced Editing Rules:
You May:
⢠apply filters, effects, dodge & burn, and other tools to all or part of your entry, but NO new shapes or features may be created in the process.
⢠saturate, desaturate or change the colors of your entry or any existing object within it. |
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03/10/2013 05:13:30 PM · #12 |
Originally posted by MattO:
well I sure hope that they can be added in post if they do this challenge. Technology is so good on newer cameras that it's sometimes tough to get noise in the images without purposely underexposing a couple of stops.
Matt |
this is true. i remember when i first had my XS, i always used noise reduction, now its not even a thought, i just skip right over that slider. |
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