40d 17-55 noisy raw shots. why? how? what to do? -- RAW, Post Processing & Printing in photography-on-the.net forums

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Oct 21, 2008 16:49 | #1

i've been shooting film for years but brand new to digital. picked up a 40d in may and been shooting jpegs mostly. just switch over to raw to shoot a friends wedding just as a friend photog. real photog was there too. i dont know if its my camera or my settings or my lens but my shots seems to be really noisy. maybe because im looking at them at 100%? i have no clue where to go with this. i want to put up a sample too but dont know what specs do u guys want me to post it at. 100% crop? 72 dpi? 600x480? as soon as i know what specs to post it, i will post it. if someone wants a full raw image i can prolly do that too. might have to link it to my flickr or something.

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kdfederer

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Oct 21, 2008 16:57 | #2

Usually noise comes from underexposure. Properly exposed shots, even at iso 1600, have very little noise.

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sdsviet
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Oct 21, 2008 17:06 | #3

yea i can tell that my indoor night shots at the reception was definately noisy due to the low light. i had my 580ex2 bouncing from the low ceilings but were only shooting at iso800 as i was worried about going higher for noise. do u have any suggestions on posting up samples correctly for people to judge if my settings are decent and that its not equipment but more user error.

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Peano

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Oct 21, 2008 17:18 | #4

sdsviet wrote in post #6536464

i want to put up a sample too but dont know what specs do u guys want me to post it at. 100% crop? 72 dpi?

Dpi is irrelevant. Just post a 100% crop, about 500 x 500 px. And post your exif info.

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Peano

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Oct 21, 2008 17:21 | #5

sdsviet wrote in post #6536555

do u have any suggestions on posting up samples correctly for people to judge if my settings are decent and that its not equipment but more user error.

My suggestion: upload one of your raw files to yousendit.com and post the link here

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sdsviet
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Oct 21, 2008 18:01 as a reply to @ Peano's post | #6

batched out from raw to jpeg on dpp:

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

100% crop

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

here is the data:

File name: DPP_0001.JPG
File size: 10554241 bytes (2592x3888, 8.4bpp, 3x)
EXIF Summary: 1/125s f/20.0 ISO400 21mm

Camera-Specific Properties:

Equipment Make: Canon
Camera Model: Canon EOS 40D
Camera Software: Digital Photo Professional

Image-Specific Properties:

Image Orientation: Top, Left-Hand
Horizontal Resolution: 350 dpi
Vertical Resolution: 350 dpi
Image Created: 2008:10:11 04:05:39
Exposure Time: 1/125 sec
F-Number: f/20.0
Exposure Program: Shutter Priority
ISO Speed Rating: 400
Lens Aperture: f/19.9
Exposure Bias: -0.7 EV
Flash: No Flash, Compulsory
Focal Length: 21.00 mm
Color Space Information: sRGB
Image Width: 2592
Image Height: 3888
Rendering: Normal
Exposure Mode: Auto
White Balance: Auto
Scene Capture Type: Standard

Other Properties:

Resolution Unit: i
Chrominance Comp Positioning: Centered
Exif IFD Pointer: 148
Compression Scheme: JPEG Compression (Thumbnail)
Horizontal Resolution: 72 dpi
Vertical Resolution: 72 dpi
Resolution Unit: i
Offset to JPEG SOI: 1064
Bytes of JPEG Data: 9673
Exif Version: 2.21
Image Generated: 2008:10:11 04:05:39
Image Digitized: 2008:10:11 04:05:39
Meaning of Each Comp: Unknown
Shutter Speed: 1/128 sec
DateTime Second Fraction: 70
DateTimeOriginal Second Fraction: 70
DateTimeDigitized Second Fraction: 70
Focal Plane Horiz Resolution: 4438 dpi
Focal Plane Vert Resolution: 4445 dpi
Focal Plane Res Unit: i
GPS Info Version: 2.2.0.0

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sdsviet
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Oct 21, 2008 18:02 | #7

link to full size image.

http://flickr.com …in/set-72157608244541788/

im gonna try to post one of the low light shot.

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sdsviet
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Oct 21, 2008 18:12 as a reply to @ sdsviet's post | #8

ok here's one of the low light shot. this one is straight processed from the raw without any changes thru dpp. the previous image had changes made with exposure white balance and picture style and a little bit sharpness but thats it.

this is just processed straight from raw:

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

100% crop:

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

exif data:

File name: DPP_0002.JPG
File size: 10000786 bytes (2592x3888, 7.9bpp, 3x)
EXIF Summary: 1/20s f/2.8 ISO800 55mm

Camera-Specific Properties:

Equipment Make: Canon
Camera Model: Canon EOS 40D
Camera Software: Digital Photo Professional

Image-Specific Properties:

Image Orientation: Top, Left-Hand
Horizontal Resolution: 350 dpi
Vertical Resolution: 350 dpi
Image Created: 2008:10:11 09:49:45
Exposure Time: 1/20 sec
F-Number: f/2.8
Exposure Program: Manual
ISO Speed Rating: 800
Lens Aperture: f/2.8
Exposure Bias: 0 EV
Flash: Flash, Compulsory
Focal Length: 55.00 mm
Color Space Information: sRGB
Image Width: 2592
Image Height: 3888
Rendering: Normal
Exposure Mode: Manual
White Balance: Manual
Scene Capture Type: Standard

Other Properties:

Resolution Unit: i
Chrominance Comp Positioning: Centered
Exif IFD Pointer: 148
Compression Scheme: JPEG Compression (Thumbnail)
Horizontal Resolution: 72 dpi
Vertical Resolution: 72 dpi
Resolution Unit: i
Offset to JPEG SOI: 1064
Bytes of JPEG Data: 7270
Exif Version: 2.21
Image Generated: 2008:10:11 09:49:45
Image Digitized: 2008:10:11 09:49:45
Meaning of Each Comp: Unknown
Shutter Speed: 1/21 sec
DateTime Second Fraction: 43
DateTimeOriginal Second Fraction: 43
DateTimeDigitized Second Fraction: 43
Focal Plane Horiz Resolution: 4438 dpi
Focal Plane Vert Resolution: 4445 dpi
Focal Plane Res Unit: i
GPS Info Version: 2.2.0.0

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neumanns

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Oct 21, 2008 18:17 | #9

How much sharpening in DPP?

Looks oversharpened to me...Try "2" with no noise reduction and see if your results improve. Then sharpen in a program where you can control what gets sharpened.

PS, the link asked for a password from me.

7D, Sigma 8-16, 17-55, 70-200 2.8 IS, 580ExII, ........Searching for Talent & Skill; Will settle for Blind Luck!

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sdsviet
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Oct 21, 2008 18:27 | #10

sorry bout the flickr link. it seems their site like to screw with me. i set the permissions to everyone but it still doesnt let people see it.

it seems that my dpp sets sharpening automatically to 3 when i view them. how do i change it back? so the first image was set to 4. second one was under default at 3.

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neumanns

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Oct 21, 2008 18:51 | #11

Just move the slider.

I believe this is post proccesing induced, I would first suspect sharpening and would also try to get the exposure right in camera. Under high iso it's best to overexpose slightly via EC than to try and bring them back up after the fact.

My 40D/17-55 is cleaner than that ...hence my putting the blame on Post proccesing. The good news is you shot in raw, so provided they were not underexposed hidden somewhere in there is a cleaner image.

My default conversion is 2 sharpen on the raw panel, no sharpening on the rgb panel, and no noise reduction.

The only thing I adjust is WB and exposure if neccasary. the rest gets done elswhere.

7D, Sigma 8-16, 17-55, 70-200 2.8 IS, 580ExII, ........Searching for Talent & Skill; Will settle for Blind Luck!

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sdsviet
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Oct 21, 2008 19:06 as a reply to @ neumanns's post | #12

100% crop with only change to exposure and white balance and portrait style. sharpening is set at 2.

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

i think this one is like the first but a different image. is this any better?

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sdsviet
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Oct 21, 2008 19:15 as a reply to @ sdsviet's post | #13

no change to raw. sharpening at 2

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

original from previous post.

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

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neumanns

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Oct 21, 2008 19:32 | #14

There is less in this one than the first but I would expect better. How much did you boost the exposure in DPP?

7D, Sigma 8-16, 17-55, 70-200 2.8 IS, 580ExII, ........Searching for Talent & Skill; Will settle for Blind Luck!

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neumanns

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Oct 21, 2008 19:55 | #15

Heres a 40d/17-55 iso 400 100% crop otherwise untouched not even sharpened, see the diffrence. This is acceptable for iso 400

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7D, Sigma 8-16, 17-55, 70-200 2.8 IS, 580ExII, ........Searching for Talent & Skill; Will settle for Blind Luck!

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