Uploaded is the requested original
Apr 13, 2020 18:58:22 #
Hello, I wasn't able to add the photo to my initial post, so I am adding here. I hope this is right!
Apr 13, 2020 19:27:44 #
Apr 13, 2020 19:49:21 #
PAR4DCR wrote:
Very nice work Linda. I like the "noise" in the image.
Don
Don
Don, thank you for your observation...I am an avid amateur. Would you tell me more about the "noise"? I didn't see it...most times, noise isn't good to have right? Thank you in advance. Linda
Apr 13, 2020 19:57:46 #
Linda S. wrote:
Don, thank you for your observation...I am an avid amateur. Would you tell me more about the "noise"? I didn't see it...most times, noise isn't good to have right? Thank you in advance. Linda
Open your attachment to a full-screen view here on UHH or back on your computer. Click to the 1:1 details (100% zoom). The 'grain' throughout the image is described as "Luminance Noise". In your example, the grain shows most in the whites of the clouds and the snow of the mountains. Digital noise can be aesthetically pleasing or an aesthetic distraction, depending on the viewer and the extent of the noise in the image. This post goes into more detail: Basics of noise processing
Apr 13, 2020 20:02:29 #
CHG_CANON wrote:
Open your attachment to a full-screen view here on... (show quote)
Thank you so much CHG_CANON! I will read the post tonight!
Apr 13, 2020 23:10:02 #
CHG_CANON wrote:
This post goes into more detail: Basics of noise processing
In your post, you wrote that high ISOs can cause noise. My image, taken at night, was for 13 seconds at f/2.8 with an ISO of 1600 using the Rokinon 14mm lens. Is 1600 considered high?
When I enlarged it, it sure did appear like sandpaper (or grainy)!
Thank you for sharing your knowledge and the write-up!
Apr 14, 2020 00:28:59 #
Linda S. wrote:
In your post, you wrote that high ISOs can cause noise. My image, taken at night, was for 13 seconds at f/2.8 with an ISO of 1600 using the Rokinon 14mm lens. Is 1600 considered high?
When I enlarged it, it sure did appear like sandpaper (or grainy)!
Thank you for sharing your knowledge and the write-up!
When I enlarged it, it sure did appear like sandpaper (or grainy)!
Thank you for sharing your knowledge and the write-up!
Linda, For your 5DIV, no ISO-1600 isn't high / too high. But, underexposing at ISO-1600 is not a good combo. For a Canon EOS camera, consider ETTR techniques too, discussed and demonstrated here:
ETTR in Practice
ETTR in Practice II
At 13-seconds, you'd have to look at a few variables. Could you go longer without too much subject movement (snow specs, star movement)? Would a higher ISO be better? Look at the original and whether you needed to brighten the exposure in processing. If 'yes' on brightening, consider if brighter directly from the camera would produce a better input to processing. Consider too a bit more NR in post, especially starting from a RAW file.
Apr 14, 2020 10:27:48 #
Apr 14, 2020 10:27:51 #
Apr 18, 2020 06:12:23 #
My eye is so distracted by that watermark that truly sucks that I cannot see beyond it to offer any critique.
May 3, 2020 21:57:14 #
It has not been mentioned yet that exposures longer than a few seconds also provokes noise. Your 13 seconds is not extreme but is also a contributor to the noise in the result.
May 4, 2020 09:55:06 #
User ID wrote:
It has not been mentioned yet that exposures longer than a few seconds also provokes noise. Your 13 seconds is not extreme but is also a contributor to the noise in the result.
Thank you User ID, I didn't know that. I only knew that exposures shouldn't be longer than 30 seconds when photographing the night sky due to the earth 's orbiting. Thanks to you, I have another fact to consider when setting up a shot!
May 4, 2020 12:20:01 #
Linda S. wrote:
Don, thank you for your observation...I am an avid amateur. Would you tell me more about the "noise"? I didn't see it...most times, noise isn't good to have right? Thank you in advance. Linda
You received some very detailed information from CHG CANON (Paul) and User ID Linda. They about covered all that I would have to say.
Don
May 4, 2020 15:27:35 #
PAR4DCR wrote:
You received some very detailed information from CHG CANON (Paul) and User ID Linda. They about covered all that I would have to say.
Don
Don
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