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Old Dec 1, 2006, 10:58 AM   #1
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Greetings,

I recently acquired a Sigma 24-60 EX DG for my XT. It does not seem to be as sharp as I had expected. I took 3 (very quick) comparison shots with the Sigma, the kit lens and my little Fuji 2800. Is it just me? Am I doing something wrong?

Thanks in advance for the comments and suggestions.

The Sigma



File Name
Sigma 24-60.JPG
Camera Model
Canon EOS DIGITAL REBEL XT
Shooting Date/Time
11/30/2006 9:56:48 PM
Shooting Mode
Auto
Tv( Shutter Speed )
1/60
Av( Aperture Value )
4.5
Metering Mode
Evaluative Metering
Exposure Compensation
0
ISO Speed
400
Lens
24.0 - 60.0mm
Focal Length
35.0mm
Image Size
2496x1664
Image Quality
Fine
Flash
On
Flash Type
Built-In Flash
Flash Exposure Compensation
0
Red-eye Reduction
On
Shutter curtain sync
1st-curtain sync
White Balance Mode
Auto
AF Mode
AI Focus AF
Parameters Settings
Contrast Mid. High
Sharpness Mid. High
Color saturation Mid. High
Color tone 0
Color Space
sRGB
Noise Reduction
Off
File Size
1537KB
Custom Function
C.Fn:01-0
C.Fn:02-0
C.Fn:03-0
C.Fn:04-0
C.Fn:05-0
C.Fn:06-0
C.Fn:07-0
C.Fn:08-0
C.Fn:09-0
Drive Mode
Single-frame shooting
Owner's Name
unknown
Camera Body No.
1020619378

The Fuji



File Name
Fuji.JPG
Camera Model Name
FinePix2800ZOOM
Shooting Date/Time
12/1/2006 9:55:36 AM
Tv (Shutter Speed)
0.015625
Av (Aperture Value)
2.8
Exposure Compensation
0
ISO Speed
100
Image Size
1280x960
Flash
On
Color Space
sRGB
File Size
313KB
Owner's Name


The Kit 18-55



File Name
18-55.JPG
Camera Model
Canon EOS DIGITAL REBEL XT
Shooting Date/Time
11/30/2006 10:08:25 PM
Shooting Mode
Auto
Tv( Shutter Speed )
1/60
Av( Aperture Value )
5.0
Metering Mode
Evaluative Metering
Exposure Compensation
0
ISO Speed
400
Lens
18.0 - 55.0mm
Focal Length
38.0mm
Image Size
2496x1664
Image Quality
Fine
Flash
On
Flash Type
Built-In Flash
Flash Exposure Compensation
0
Red-eye Reduction
On
Shutter curtain sync
1st-curtain sync
White Balance Mode
Auto
AF Mode
AI Focus AF
Parameters Settings
Contrast Mid. High
Sharpness Mid. High
Color saturation Mid. High
Color tone 0
Color Space
sRGB
Noise Reduction
Off
File Size
1569KB
Custom Function
C.Fn:01-0
C.Fn:02-0
C.Fn:03-0
C.Fn:04-0
C.Fn:05-0
C.Fn:06-0
C.Fn:07-0
C.Fn:08-0
C.Fn:09-0
Drive Mode
Single-frame shooting
Owner's Name
unknown
Camera Body No.
1020619378

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Old Dec 1, 2006, 11:07 AM   #2
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First of all,get out of theAI Focus mode.

For test, stop down your lens to f8 and try again. I would suggest shooting outside in good light unless you using tripod indoors. I usually shoot a dollar bill pinned to a cardboard box.
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Old Dec 1, 2006, 4:55 PM   #3
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Maybe these will help. I appreciate the advice. Looks a lot better!

I included a few with my 70-300 as well.

Thanks again.

Sigma 24-60



Camera Model
Canon EOS DIGITAL REBEL XT
Shooting Date/Time
12/1/2006 12:20:59 AM
Shooting Mode
Aperture-Priority AE
Tv( Shutter Speed )
1/1600
Av( Aperture Value )
8.0
Metering Mode
Partial Metering
Exposure Compensation
+1/3
ISO Speed
1600
Lens
24.0 - 60.0mm
Focal Length
60.0mm
Image Size
2496x1664
Image Quality
Fine
Flash
Off
White Balance Mode
Auto
AF Mode
One-Shot AF
Parameters Settings
Contrast Mid. High
Sharpness Mid. High
Color saturation Mid. High
Color tone 0
Color Space
sRGB
Noise Reduction
Off
File Size
2541KB
Custom Function
C.Fn:01-0
C.Fn:02-0
C.Fn:03-0
C.Fn:04-0
C.Fn:05-0
C.Fn:06-0
C.Fn:07-0
C.Fn:08-0
C.Fn:09-0
Drive Mode
Single-frame shooting
Owner's Name
unknown
Camera Body No.
1020619378


Kit Lens



File Name
IMG_3171.JPG
Camera Model
Canon EOS DIGITAL REBEL XT
Shooting Date/Time
12/1/2006 12:19:29 AM
Shooting Mode
Aperture-Priority AE
Tv( Shutter Speed )
1/1600
Av( Aperture Value )
8.0
Metering Mode
Partial Metering
Exposure Compensation
+1/3
ISO Speed
1600
Lens
18.0 - 55.0mm
Focal Length
55.0mm
Image Size
2496x1664
Image Quality
Fine
Flash
Off
White Balance Mode
Auto
AF Mode
One-Shot AF
Parameters Settings
Contrast Mid. High
Sharpness Mid. High
Color saturation Mid. High
Color tone 0
Color Space
sRGB
Noise Reduction
Off
File Size
2350KB
Custom Function
C.Fn:01-0
C.Fn:02-0
C.Fn:03-0
C.Fn:04-0
C.Fn:05-0
C.Fn:06-0
C.Fn:07-0
C.Fn:08-0
C.Fn:09-0
Drive Mode
Single-frame shooting
Owner's Name
unknown
Camera Body No.
1020619378


Sigma 70-300



File Name
IMG_3178.JPG
Camera Model
Canon EOS DIGITAL REBEL XT
Shooting Date/Time
12/1/2006 12:23:18 AM
Shooting Mode
Aperture-Priority AE
Tv( Shutter Speed )
1/1600
Av( Aperture Value )
8.0
Metering Mode
Partial Metering
Exposure Compensation
+1/3
ISO Speed
1600
Lens
70.0 - 300.0mm
Focal Length
300.0mm
Image Size
2496x1664
Image Quality
Fine
Flash
Off
White Balance Mode
Auto
AF Mode
One-Shot AF
Parameters Settings
Contrast Mid. High
Sharpness Mid. High
Color saturation Mid. High
Color tone 0
Color Space
sRGB
Noise Reduction
Off
File Size
2149KB
Custom Function
C.Fn:01-0
C.Fn:02-0
C.Fn:03-0
C.Fn:04-0
C.Fn:05-0
C.Fn:06-0
C.Fn:07-0
C.Fn:08-0
C.Fn:09-0
Drive Mode
Single-frame shooting
Owner's Name
unknown
Camera Body No.
1020619378


Sigma 70-300



File Name
IMG_3181.JPG
Camera Model
Canon EOS DIGITAL REBEL XT
Shooting Date/Time
12/1/2006 12:24:17 AM
Shooting Mode
Aperture-Priority AE
Tv( Shutter Speed )
1/1600
Av( Aperture Value )
8.0
Metering Mode
Partial Metering
Exposure Compensation
+1/3
ISO Speed
1600
Lens
70.0 - 300.0mm
Focal Length
300.0mm
Image Size
2496x1664
Image Quality
Fine
Flash
Off
White Balance Mode
Auto
AF Mode
One-Shot AF
Parameters Settings
Contrast Mid. High
Sharpness Mid. High
Color saturation Mid. High
Color tone 0
Color Space
sRGB
Noise Reduction
Off
File Size
1824KB
Custom Function
C.Fn:01-0
C.Fn:02-0
C.Fn:03-0
C.Fn:04-0
C.Fn:05-0
C.Fn:06-0
C.Fn:07-0
C.Fn:08-0
C.Fn:09-0
Drive Mode
Single-frame shooting
Owner's Name
unknown
Camera Body No.
1020619378


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