EXIF read errors when another program writes a .jpg?

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Irving
Posts: 83
Joined: Thu May 26, 2005 5:44 am

EXIF read errors when another program writes a .jpg?

Post by Irving » Fri Aug 26, 2005 6:21 pm

Image

Image


Image


I wonder if anyone else has Arcsoft Photosuite and can duplicate this error? (And forgive me, Pierre, for even bringing Irfanview up, but in this case I didn't have anything else to use for discussion).

I was testing if Photosuite, which came with my new camera, would keep or strip EXIF information. I took one of my camera images, resized it, (the image posted), and opened the new image with both Irfanview and XnView, since they read EXIF info. With Xnview, however, when clicking on either Edit>Properties or the ? mark on my toolbar, XnView hesitates for perhaps 10 seconds, and then an error message appears.

My guess is that Arcsoft has changed the EXIF? Look at the ISO, or the Contrast, Saturation, and Sharpness values. I'm no expert, but that's obviously not a legitimate ISO number. :)

Oh well, I post the resized image. Perhaps you can "take apart" the image and see the problem?

I'm using 1.74

**************************************************

EXIF info of large original as read from XnView:


Camera Manufacturer : Canon
Camera Model : Canon PowerShot A510
Orientation : top-left (1)
X Resolution : 180
Y Resolution : 180
Resolution unit : Inch
Date modified : 2005:08:18 19:46:16
YCbCr Positioning : centered (1)
Exif offset : 196
:
Exposure time : 1/60
F-Number : F2.6
EXIF version : 02.20
Date taken : 2005:08:18 19:46:16
Date digitized : 2005:08:18 19:46:16
Components configuration : YCbCr
Compressed bits per pixel : 5
Shutter speed : 1/60
Aperture : F2.6
Exposure bias value : 0/3
Max aperture : F2.6
Metering mode : Center weight (2)
Flash : Not fired
Focal length [mm] : 5.8125
FlashPix Version : 01.00
Colour space : sRGB
Image width : 2048
Image length : 1536
Interoperability offset : 1860
Focal plane X-Resolution : 2048000/224
Focal plane Y-Resolution : 1536000/168
Focal plane res. unit : Inch (2)
Sensing method : One-chip color area sensor (2)
File source : DSC
Custom rendered : Normal process (0)
Exposure mode : Auto (0)
White balance : Auto (0)
Digital zoom : 2048/2048
Scene capture type : Standard (0)
:
IOP index : R98
IOP version : 0100
IOP width : 2048
IOP height : 1536
:
Macro : Normal
SelfTimer : Off
Compression setting : Superfine
Flash mode : Not fired
Drive mode : Single or timer
Focus Mode : Single
Image size : Large
Easy shooting : Manual
Contrast : Normal
Saturation : Normal
Sharpness : Normal
ISO value : 50
Metering mode : Center-weighted
Focus type : Auto
AF point : Unknown
Exposure mode : Program
Focal length [mm] : 742
Focal length short / mm : 186
Focal units / mm : 32
White balance : Auto
Sequence number : 0
Picture info : IMG:PowerShot A510 JPEG
Firmware version : Firmware Version 1.00
Image number : 1131-332
Owner name :
:
Compression : 6
X Resolution : 180
Y Resolution : 180
Resolution unit : Inch
Thumbnail length : 3330

************************************************************************

EXIF info of large original as read from Irfanview:

File: - C:\My Documents\aaa My Camera\My camera large originals\20050818_sunset_0013.JPG

Make - Canon
Model - Canon PowerShot A510
Orientation - Top left
XResolution - 180
YResolution - 180
ResolutionUnit - Inch
DateTime - 2005:08:18 19:46:16
YCbCrPositioning - Centered
ExifOffset - 196
ExposureTime - 1/60 seconds
FNumber - 2.60
ExifVersion - 0220
DateTimeOriginal - 2005:08:18 19:46:16
DateTimeDigitized - 2005:08:18 19:46:16
ComponentsConfiguration - YCbCr
CompressedBitsPerPixel - 5 (bits/pixel)
ShutterSpeedValue - 1/60 seconds
ApertureValue - F 2.59
ExposureBiasValue - 0.00
MaxApertureValue - F 2.59
MeteringMode - Center weighted average
Flash - Not fired, compulsory flash mode
FocalLength - 5.81 mm
UserComment -
FlashPixVersion - 0100
ColorSpace - sRGB
ExifImageWidth - 2048
ExifImageHeight - 1536
InteroperabilityOffset - 1860
FocalPlaneXResolution - 9142.86
FocalPlaneYResolution - 9142.86
FocalPlaneResolutionUnit - Inch
SensingMethod - One-chip color area sensor
FileSource - DSC - Digital still camera
CustomRendered - Normal process
ExposureMode - Auto
WhiteBalance - 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 - Manual
Digital zoom - None
Contrast - Normal
Saturation - Normal
Sharpness - Normal
ISO Value - 50
Metering mode - Center weighted
Focus type - Auto
AF point selected -
Exposure mode - Program
Focal length - 186 - 742 mm (32 mm)
Flash activity -
Flash details -
Focus mode 2 - Single
White Balance - Auto
Sequence number - 0
Flash bias - 0.00 EV
Subject Distance - 1252
Image Type - IMG:PowerShot A510 JPEG
Firmware Version - Firmware Version 1.00
Image Number - 1131332
Owner Name -

***********************************************************

EXIF after resizing with Arcsoft Photosuite (read by Irfanview):

File: - C:\My Documents\My Pictures\for xnview.jpg

Make - Canon
Model - Canon PowerShot A510
Orientation - Top left
XResolution - 180
YResolution - 180
ResolutionUnit - Inch
DateTime - 2005:08:18 19:46:16
YCbCrPositioning - Centered
ExifOffset - 8
ExposureTime - 1/60 seconds
FNumber - 2.60
ExifVersion - 0220
DateTimeOriginal - 2005:08:18 19:46:16
DateTimeDigitized - 2005:08:18 19:46:16
ComponentsConfiguration - YCbCr
CompressedBitsPerPixel - 5 (bits/pixel)
ShutterSpeedValue - 1/60 seconds
ApertureValue - F 2.59
ExposureBiasValue - 0.00
MaxApertureValue - F 2.59
MeteringMode - Center weighted average
Flash - Not fired, compulsory flash mode
FocalLength - 5.81 mm
UserComment -
FlashPixVersion - 0100
ColorSpace - sRGB
ExifImageWidth - 2048
ExifImageHeight - 1536
InteroperabilityOffset - 8
FocalPlaneXResolution - 9142.86
FocalPlaneYResolution - 9142.86
FocalPlaneResolutionUnit - Inch
SensingMethod - One-chip color area sensor
FileSource - DSC - Digital still camera
CustomRendered - Normal process
ExposureMode - Auto
WhiteBalance - Auto
DigitalZoomRatio - 1.00 x
SceneCaptureType - Standard

Maker Note (Vendor): -
Macro mode - Off
Self timer - Off
Quality - Normal
Flash mode - Not fired
Sequence mode - Single or Timer
Focus mode - One-Shot
Image size - Large
Easy shooting mode - Full Auto
Digital zoom - None
Contrast - Low , -57228
Saturation - Low , -51903
Sharpness - Low , -53199
ISO Value - 18976 (other)
Metering mode - Center weighted averaging
Focus type - Auto
AF point selected -
Exposure mode - Easy shooting
Focal length - 28018 - 26950 mm (24951 mm)
Flash activity -
Flash details - FP sync enabled
Focus mode 2 - 12334
White Balance - Auto
Sequence number - 0
Flash bias - 0.00 EV
Subject Distance - 0
Image Type -
Firmware Version -
Image Number - 1131332
Owner Name -

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xnview
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Re: EXIF read errors when another program writes a .jpg?

Post by xnview » Mon Aug 29, 2005 3:30 pm

A known bug
Pierre.

marsh
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Posts: 2443
Joined: Sun May 15, 2005 6:31 am

Post by marsh » Wed Aug 31, 2005 5:22 pm

It seems fixed. v.1.80.2RC
Similar problem in French forum seems fixed, also.
http://newsgroup.xnview.com/viewtopic.php?t=3004

Irving
Posts: 83
Joined: Thu May 26, 2005 5:44 am

Post by Irving » Wed Aug 31, 2005 9:53 pm

So is the known bug with XnView, or Arcsoft?

I can't read French. 8)

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Clo
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Location: Bordeaux, France
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In brief---

Post by Clo » Wed Aug 31, 2005 10:24 pm

:arrow: Irving

:) Hello !
I can't read French. 8)

• Well, well ! marsh, you sly thing! :D

- In brief :
¤ Some JPEG images caused a pretty crash when calling Properties >> EXIF, while the pics could be displayed alright…

¤ Some EXIF data in those images were false, and caused that crash. The oddest thing is that occured too for the reduced version shown on the message, because XnView kept these data very conscientiously ! :P
¤ I'd checked that about the GPF, it seems really the same than here…

:mrgreen: Kind regards,
Claude
Clo
Yep ! Huge storm ! I turn off all ! Bye !
Old user ON SELECTIVE STRIKE till further notice

Irving
Posts: 83
Joined: Thu May 26, 2005 5:44 am

Post by Irving » Wed Aug 31, 2005 11:15 pm

Thanks, Clo.

In over a year, maybe more, I'd never had a lockup until I tried to open up that image modified with Arcsoft. So I understand that other programs can alter the EXIF (?) and XnView has a problem with that. Actually I don't have or use use very many other image programs, just enough to work with cloning or transparencies. XnView is my favorite. (Best crop tool around).

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