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G2 normal noise or not ?

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MIB

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Hi all,

This sample photo was taken with G2 at ISO 50. 0.5 sec shutter speed was used. Noticeable noise was observed across the picture. Is this normal? What's a good way to reduce this kind of noise during and post the shot ?
Thx a lot.

File: CRW_1372.CRW
File size: 2,355KB
Serial Number: 113-1372
Camera Model: Canon PowerShot G2
Firmware: Firmware Version 1.00D
Date/Time: 2001.11.25 00:23:12
Shutter speed: 0.4 sec
Aperture: 2.8
Exposure mode: Av
Flash: Off
Metering mode: Evaluative
Drive mode: Single frame shooting
ISO: 50
Lens: 7.0 to 21.0 mm
Focal length: 20.0 mm
Subject distance: 1.896 m
AF mode: Single AF
Focus point: [Centre]
Image size: 2272 x 1704
Image quality: Raw
White balance: Auto
Saturation: Normal
Sharpness: Normal
Contrast: Normal

A:\CRW_1372.jpg

--'MIB'
 
how to post a sample pic here directly from my hard drive ?
MIB said:
Hi all,

This sample photo was taken with G2 at ISO 50. 0.5 sec shutter
speed was used. Noticeable noise was observed across the picture.
Is this normal? What's a good way to reduce this kind of noise
during and post the shot ?
Thx a lot.

File: CRW_1372.CRW
File size: 2,355KB
Serial Number: 113-1372
Camera Model: Canon PowerShot G2
Firmware: Firmware Version 1.00D
Date/Time: 2001.11.25 00:23:12
Shutter speed: 0.4 sec
Aperture: 2.8
Exposure mode: Av
Flash: Off
Metering mode: Evaluative
Drive mode: Single frame shooting
ISO: 50
Lens: 7.0 to 21.0 mm
Focal length: 20.0 mm
Subject distance: 1.896 m
AF mode: Single AF
Focus point: [Centre]
Image size: 2272 x 1704
Image quality: Raw
White balance: Auto
Saturation: Normal
Sharpness: Normal
Contrast: Normal

A:\CRW_1372.jpg

--
'MIB'
Click to expand...
--'MIB'
 
ok, finally I managed to post it to Pbase. Here is the link:

http://www.pbase.com/image/630523
MIB said:
Hi all,

This sample photo was taken with G2 at ISO 50. 0.5 sec shutter
speed was used. Noticeable noise was observed across the picture.
Is this normal? What's a good way to reduce this kind of noise
during and post the shot ?
Thx a lot.

File: CRW_1372.CRW
File size: 2,355KB
Serial Number: 113-1372
Camera Model: Canon PowerShot G2
Firmware: Firmware Version 1.00D
Date/Time: 2001.11.25 00:23:12
Shutter speed: 0.4 sec
Aperture: 2.8
Exposure mode: Av
Flash: Off
Metering mode: Evaluative
Drive mode: Single frame shooting
ISO: 50
Lens: 7.0 to 21.0 mm
Focal length: 20.0 mm
Subject distance: 1.896 m
AF mode: Single AF
Focus point: [Centre]
Image size: 2272 x 1704
Image quality: Raw
White balance: Auto
Saturation: Normal
Sharpness: Normal
Contrast: Normal

A:\CRW_1372.jpg

--
'MIB'
Click to expand...
--'MIB'
 
You definetly need more light. Your picture was taken at 0.4 sec hence the noise and blur. Nobody can stand for that long without even blinking. I'm not sure but I think the in-camera noise reduction only quicks in exposures of 1" and longer. If you have an external flash try bouncing it off the celing.
Herbet.
MIB said:
http://www.pbase.com/image/630523
MIB said:
Hi all,

This sample photo was taken with G2 at ISO 50. 0.5 sec shutter
speed was used. Noticeable noise was observed across the picture.
Is this normal? What's a good way to reduce this kind of noise
during and post the shot ?
Thx a lot.

File: CRW_1372.CRW
File size: 2,355KB
Serial Number: 113-1372
Camera Model: Canon PowerShot G2
Firmware: Firmware Version 1.00D
Date/Time: 2001.11.25 00:23:12
Shutter speed: 0.4 sec
Aperture: 2.8
Exposure mode: Av
Flash: Off
Metering mode: Evaluative
Drive mode: Single frame shooting
ISO: 50
Lens: 7.0 to 21.0 mm
Focal length: 20.0 mm
Subject distance: 1.896 m
AF mode: Single AF
Focus point: [Centre]
Image size: 2272 x 1704
Image quality: Raw
White balance: Auto
Saturation: Normal
Sharpness: Normal
Contrast: Normal

A:\CRW_1372.jpg

--
'MIB'
Click to expand...
--
'MIB'
Click to expand...
 
I've seen people taking some G2 night scene shots with shutter speed as long as 3-5 seconds, the background was still quite clean with minimal noise. I wonder how they managed to do that ...
herbet said:
MIB said:
http://www.pbase.com/image/630523
MIB said:
Hi all,

This sample photo was taken with G2 at ISO 50. 0.5 sec shutter
speed was used. Noticeable noise was observed across the picture.
Is this normal? What's a good way to reduce this kind of noise
during and post the shot ?
Thx a lot.

File: CRW_1372.CRW
File size: 2,355KB
Serial Number: 113-1372
Camera Model: Canon PowerShot G2
Firmware: Firmware Version 1.00D
Date/Time: 2001.11.25 00:23:12
Shutter speed: 0.4 sec
Aperture: 2.8
Exposure mode: Av
Flash: Off
Metering mode: Evaluative
Drive mode: Single frame shooting
ISO: 50
Lens: 7.0 to 21.0 mm
Focal length: 20.0 mm
Subject distance: 1.896 m
AF mode: Single AF
Focus point: [Centre]
Image size: 2272 x 1704
Image quality: Raw
White balance: Auto
Saturation: Normal
Sharpness: Normal
Contrast: Normal

A:\CRW_1372.jpg

--
'MIB'
Click to expand...
--
'MIB'
Click to expand...
Click to expand...
--'MIB'
 
Yes, that's normal noise for that sort of shutter speed and low light. The G2's noise reduction doesn't kick in until exposures of 1.3 seconds and longer. But of course, at those speeds your subject won't be able to hold her pose easily. Therefore, you'd do better to opt for more illumination.

Cheers
Martin
 
MIB said:
I've seen people taking some G2 night scene shots with shutter
speed as long as 3-5 seconds, the background was still quite clean
with minimal noise. I wonder how they managed to do that ...
Click to expand...
Precisely -because- their shutter speed was 3-5 seconds.

Shutter speeds 1.3 seconds and LONGER = noise reduction is applied
Shutter speeds 1 second and FASTER = no noise reduction applied.

Would be nice if Canon let us switch noise reduction on at faster shutter speeds, but they don't sadly.

Cheers
Martin
 
MIB said:
herbet said:
MIB said:
http://www.pbase.com/image/630523
MIB said:
Hi all,

This sample photo was taken with G2 at ISO 50. 0.5 sec shutter
speed was used. Noticeable noise was observed across the picture.
Is this normal? What's a good way to reduce this kind of noise
during and post the shot ?
Thx a lot.

File: CRW_1372.CRW
File size: 2,355KB
Serial Number: 113-1372
Camera Model: Canon PowerShot G2
Firmware: Firmware Version 1.00D
Date/Time: 2001.11.25 00:23:12
Shutter speed: 0.4 sec
Aperture: 2.8
Exposure mode: Av
Flash: Off
Metering mode: Evaluative
Drive mode: Single frame shooting
ISO: 50
Lens: 7.0 to 21.0 mm
Focal length: 20.0 mm
Subject distance: 1.896 m
AF mode: Single AF
Focus point: [Centre]
Image size: 2272 x 1704
Image quality: Raw
White balance: Auto
Saturation: Normal
Sharpness: Normal
Contrast: Normal

A:\CRW_1372.jpg

--
'MIB'
Click to expand...
--
'MIB'
Click to expand...
Click to expand...
--
'MIB'
Click to expand...
On my G1 noise reduction sets in at 1.6sec, I imagine the G2 is the same.
I'v taken night shots up to 8sec with no noise.
 
ok, sounds like I have to live with it...
Any solution (noise reducer ?) to fix this photo ?
Martin Eager said:
Yes, that's normal noise for that sort of shutter speed and low
light. The G2's noise reduction doesn't kick in until exposures of
1.3 seconds and longer. But of course, at those speeds your subject
won't be able to hold her pose easily. Therefore, you'd do better
to opt for more illumination.

Cheers
Martin
Click to expand...
--'MIB'
 
The noise reducer (g-Iso-r, is one such program,) http://www.fredmiranda.com/CanonG1_G2_pro90/index.html

reduces grain in the image caused by use of high ISO settings. This program is like unsharp mask in reverse, by identifying then maintaining the edges of detail while emphasizing gaussian blurr to the smooth areas.

What I see in your photo is quite a different noise, hot pixels, an occasional white or bright pixel surrounded by a smoother black. You can correct this in Photoshop using the clone stamp tool. Adjust the size of the stamp to fit and clone out each one, very tedious. Perhaps some one has a better approach?

When I saw such noise I went to Tv and increased my shutter to 1.6 sec and the hot pixels dropped over an order of magnitude. you are using a tripod, right? Otherwise both of you will add to the blur. Meanwhile your model will have a hard time holding still this long unless they are an accomplished mime. Try the 420ex bounced, works wonders.
Mike K
MIB said:
Martin Eager said:
Yes, that's normal noise for that sort of shutter speed and low
light. The G2's noise reduction doesn't kick in until exposures of
1.3 seconds and longer. But of course, at those speeds your subject
won't be able to hold her pose easily. Therefore, you'd do better
to opt for more illumination.

Cheers
Martin
Click to expand...
--
'MIB'
Click to expand...
 
Mib,

I agree with the previous answers, G2 can be a little noisy sometimes, but if you use a shutter speed just above 1.3 sec (noise reduction algorithm) it's much better.

Here a picture I took during the night (full dark outside), noise is ok.

Francois



Aperture: f2.0
Shutter: 4
ISO Speed: 50
Exposure Comp: +0.0 EV
Exposure Mode: Manual (M)
RAW mode
 
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