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Thread started 17 Oct 2006 (Tuesday) 01:31
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Shooting in the Fog

 
rounder_09
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Oct 17, 2006 01:31 |  #1

I took this one the other day, and was disappointed at how grainy it came out. It was shot at ISO 100, so I suspect it is the fog causing it. Is this true? Is there anything else that I could have done when shooting to improve the quality?

The second image is after I ran it through Noiseware... with the default settings. The noise results were better, but some details seem softer.

cheers

p.s. Any other critiques are welcome!


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Robert_Lay
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Oct 17, 2006 08:35 |  #2

The 2nd version seems to be of much lower contrast.

I cannot tell from the image, as posted, whether there is a visible noise or grain or not. In order to see that you would have to post a Full Detail, 100% crop.

See my tutorial on making Full Detail 100% Crop, at Frame 30 of the following thread:
https://photography-on-the.net …thread.php?t=34​606&page=2


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TeeJay
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Oct 17, 2006 08:51 |  #3

Has this pic been "saved" more than once as a .jpg file? Just wondered whether it might have been re-compression that may have caused it?


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rounder_09
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Oct 17, 2006 10:49 |  #4

TeeJay wrote in post #2131182 (external link)
Has this pic been "saved" more than once as a .jpg file? Just wondered whether it might have been re-compression that may have caused it?

Oops... it has. I will post versions that have not. I wasn't happy with the original RAW file, but you are right, there were compressed more than once so that is not helping.


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rounder_09
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Oct 17, 2006 10:56 |  #5

Robert_Lay wrote in post #2131121 (external link)
The 2nd version seems to be of much lower contrast.

I cannot tell from the image, as posted, whether there is a visible noise or grain or not. In order to see that you would have to post a Full Detail, 100% crop.

See my tutorial on making Full Detail 100% Crop, at Frame 30 of the following thread:
https://photography-on-the.net …thread.php?t=34​606&page=2

Here is my 100% crop attempt :D Does this help?

I think the original looks better after running it through noiseware... but other details are lost. So are there any tips out there for shooting a better image in the fog... without having to use PP to clean it up?

Thanks for your time!


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Robert_Lay
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Oct 17, 2006 21:23 |  #6

rounder_09 wrote in post #2131689 (external link)
Here is my 100% crop attempt :D Does this help?

Hope to get back to you on Wednesday!


Bob
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queenbee288
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Oct 18, 2006 05:18 |  #7

Is it possible that the noise is enhanced by underexposure on these images. They look underexposed to me.




  
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Robert_Lay
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Oct 18, 2006 12:06 |  #8

Robert_Lay wrote in post #2134460 (external link)
Hope to get back to you on Wednesday!


Sorry that it took me a while to get to this item.

Your Full Detail 100% crop seems to be correctly made. I have examined it and I can see no evidence of any problems. Any artifcacts that you are seeing in your processed versions must be due to the processing/sizing operations.

Regarding the question of exposure - someone commented that they looked under-exposed. According to the histograms of the two posted images, the first is correctly exposed and the second image is somewhat over-exposed. Very simple, just look at the histogram.


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floydianslip6
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Oct 18, 2006 17:44 |  #9

I think the artifacts are definitely coming from a re-sample or resize. I don't think it's very noisy at all really.

On another note I like both of the shots, just wish the fog was lower to the logs!


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rounder_09
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Oct 18, 2006 17:55 |  #10

floydianslip6 wrote in post #2138270 (external link)
I think the artifacts are definitely coming from a re-sample or resize. I don't think it's very noisy at all really.

On another note I like both of the shots, just wish the fog was lower to the logs!


Thank you for the kind words :)

This will probably sound like a stupid question... but I am new :) When you say "artifacts", what exactly do you mean?

Thanks


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rounder_09
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Oct 18, 2006 18:33 |  #11

Robert_Lay wrote in post #2136820 (external link)
Sorry that it took me a while to get to this item.

Your Full Detail 100% crop seems to be correctly made. I have examined it and I can see no evidence of any problems. Any artifcacts that you are seeing in your processed versions must be due to the processing/sizing operations.

Regarding the question of exposure - someone commented that they looked under-exposed. According to the histograms of the two posted images, the first is correctly exposed and the second image is somewhat over-exposed. Very simple, just look at the histogram.

Thank you for your time! It sounds like I should review how I am processing my images. I shot in RAW, and then converted to tiff... then to jpg. Is there a better way?


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floydianslip6
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Oct 18, 2006 18:48 |  #12

Artifacts are the imperfections in the image you're noticing. It's not REALLY noise and it's just extra/left out/corrupted information in the image file that comes from re-sizing or converting it. When you convert to JPG how high quality is the JPG?


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rounder_09
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Oct 18, 2006 18:50 |  #13

floydianslip6 wrote in post #2138508 (external link)
Artifacts are the imperfections in the image you're noticing. It's not REALLY noise and it's just extra/left out/corrupted information in the image file that comes from re-sizing or converting it. When you convert to JPG how high quality is the JPG?

I see... thanks. I can't remember, approx 8 I think. The max I could while staying under the 100k limit on the forums here.

What is strange is that I thought that the original RAW files looked that way too. I will have to take a look when I get home.

Thanks


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floydianslip6
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Oct 18, 2006 18:57 |  #14

it might be that the workflow settings for the RAW processing are over estimating the images mega pixels. While trying to fool my computer into making an image bigger it gives me some artifacts sometimes.

It's also possible that it's just something from the resize if the image was really big to start with, that's happened to me before as well.


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Canon ultrasonic EF-S 10-22mm wide angle
Canon ultrasonic EF-S 17-85mm general purpose
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