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Old Mar 5, 2007, 1:39 AM   #1
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I recently bought Canon S3 IS and took so many beautiful pictures in the Auto mode.

Recently I started facing below problem. There are lots of dots on the recent pictures like low image quality kind.

Not sure which setting in Auto mode is creating the problem.

There are no low light scenario, in the all image sizes (L, M1, M2, etc), it gives the same problem.

Any pointers on how to fix this.
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Old Mar 5, 2007, 8:23 AM   #2
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That sounds more like noise (similar to film grain you get using higher ISO speed film).

Did you have your ISO speed set higher? That's the first thing I'd check (and the most likely cause of noise if that's your issue). Are you sure the light was not low? A well lit interior is low light to a camera. Was it happening outdoors, too?

You may want to post a sample image showing the problem that members can look at it.

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Old Mar 11, 2007, 12:16 AM   #3
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Without seeing the pictures, the answer above sounds like a likely explanation. I would add that you should consider changing from Auto to "P" mode. In Auto, you can only choose between auto and Hi ISO. P lets you set the ISO to 100 (my recommendation) while the camera manages everything else. This also makes for a good transition mode for when you want to play with more advanced settings, such as using the shutter speed setting at "Tv."
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Old Apr 14, 2007, 9:16 PM   #4
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Perhaps I can illustrate his problem. I've only had my S3 a few weeks and am still figuring out what everything means (and I can see that a digital photography class would be useful). I've been getting some speckled photos under certain conditions. This first one has been in a stadium (under stadium lighting) and I thought it was the lighting:

Make - Canon
Model - Canon PowerShot S3 IS
Orientation - Top left
XResolution - 180
YResolution - 180
ResolutionUnit - Inch
DateTime - 2007:04:12 18:38:43
YCbCrPositioning - Centered
ExifOffset - 196
ExposureTime - 1/1250 seconds
FNumber - 2.70
ExifVersion - 0220
DateTimeOriginal - 2007:04:12 18:38:43
DateTimeDigitized - 2007:04:12 18:38:43
ComponentsConfiguration - YCbCr
CompressedBitsPerPixel - 5 (bits/pixel)
ShutterSpeedValue - 1/1244 seconds
ApertureValue - F 2.71
ExposureBiasValue - 0.00
MaxApertureValue - F 2.71
MeteringMode - Multi-segment
Flash -
FocalLength - 6.00 mm
UserComment -
FlashPixVersion - 0100
ColorSpace - sRGB
ExifImageWidth - 2816
ExifImageHeight - 2112
InteroperabilityOffset - 2772
FocalPlaneXResolution - 12515.56
FocalPlaneYResolution - 12497.04
FocalPlaneResolutionUnit - Inch
SensingMethod - One-chip color area sensor
FileSource - DSC - Digital still camera
CustomRendered - Normal process
ExposureMode - Auto
White Balance - Auto
DigitalZoomRatio - 1.00 x
SceneCaptureType - Standard

Maker Note (Vendor): -
Macro mode - Normal
Self timer - Off
Quality - Superfine
Flash mode - Not fired
Sequence mode - Single or Timer
Focus mode - Single
Image size - Large
Easy shooting mode - Full Auto
Digital zoom - None
Contrast - Normal
Saturation - Normal
Sharpness - Normal
ISO Value - 14
Metering mode - Evaluative
Focus type - Auto
AF point selected - Manual AF point selection
Exposure mode - Easy shooting
Focal length - 600 - 7200 mm (100 mm)
Flash activity -
Flash details -
Focus mode 2 - Continuous
White Balance - Auto
Sequence number - 0
Flash bias - 0.00 EV
Subject Distance - 117
Image Type - PowerShot S3 IS JPEG
Firmware Version - Firmware Version 1.00
Image Number - 1000059

Thumbnail: -
Compression - 6 (JPG)
XResolution - 180
YResolution - 180
ResolutionUnit - Inch
JpegIFOffset - 5108
JpegIFByteCount - 7749

I have additional examples if needed. It seems the images taken in "sports" mode tend to suffer the most.

Here's a second example in sunlight, but in Sports mode. The effect is worse in the shadows. In Auto mode the picture looked fine.

Make - Canon
Model - Canon PowerShot S3 IS
Orientation - Top left
XResolution - 180
YResolution - 180
ResolutionUnit - Inch
DateTime - 2007:04:14 11:48:22
YCbCrPositioning - Centered
ExifOffset - 196
ExposureTime - 1/800 seconds
FNumber - 8.00
ExifVersion - 0220
DateTimeOriginal - 2007:04:14 11:48:22
DateTimeDigitized - 2007:04:14 11:48:22
ComponentsConfiguration - YCbCr
CompressedBitsPerPixel - 3 (bits/pixel)
ShutterSpeedValue - 1/807 seconds
ApertureValue - F 8.00
ExposureBiasValue - 0.00
MaxApertureValue - F 3.51
MeteringMode - Multi-segment
Flash - Not fired, compulsory flash mode
FocalLength - 14.50 mm
UserComment -
FlashPixVersion - 0100
ColorSpace - sRGB
ExifImageWidth - 2816
ExifImageHeight - 2112
InteroperabilityOffset - 2772
FocalPlaneXResolution - 12515.56
FocalPlaneYResolution - 12497.04
FocalPlaneResolutionUnit - Inch
SensingMethod - One-chip color area sensor
FileSource - DSC - Digital still camera
CustomRendered - Normal process
ExposureMode - Auto
White Balance - Auto
DigitalZoomRatio - 1.00 x
SceneCaptureType - Standard

Maker Note (Vendor): -
Macro mode - Normal
Self timer - Off
Quality - Fine
Flash mode - Not fired
Sequence mode - Continous
Focus mode - Single
Image size - Large
Easy shooting mode - Sports
Digital zoom - None
Contrast - Normal
Saturation - Normal
Sharpness - Normal
ISO Value - Auto
Metering mode - Evaluative
Focus type - Auto
AF point selected - Manual AF point selection
Exposure mode - Easy shooting
Focal length - 600 - 7200 mm (100 mm)
Flash activity -
Flash details -
Focus mode 2 - Continuous
White Balance - Auto
Sequence number - 1
Flash bias - 0.00 EV
Subject Distance - 861
Image Type - PowerShot S3 IS JPEG
Firmware Version - Firmware Version 1.00
Image Number - 1000142

Thumbnail: -
Compression - 6 (JPG)
XResolution - 180
YResolution - 180
ResolutionUnit - Inch
JpegIFOffset - 5108
JpegIFByteCount - 5537

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