This image has been shrunk from 1600x1200 pixels to fit this page - and demonstrates the low light capability of the A40.

This picture (and that on the previous page) was the first time I had used the A40 for this type of subject - so was something of an experiment.

The picture was taken about 21:00 in January in a room having dark walls - and a single tungsten light.

shrunk to 18%
Part of the above image as downloaded from the A40 before shrinking and compression.

This image is stored in the jpeg format with a Compression Factor of 1 to preserve the original quality as downloaded from the A40.

original A40 image
Although picture enhancement is beyond the scope of this review - this bottom image has been included to illustrate that sufficient information is recorded by the A40 to allow enhancement without losing the integrity of the original image.

This basic enhancement was done in two stages:

  • Histogram Adjustment - to improve contrast and detail.
  • Softening - to reduce the grain present in the original subject.
- taking about 10 seconds in total.

inset enhanced

 
Original A40 image file Exif header - time is GMT regardless of where or daylight saving.
Subtract 5 hours from time stamp to correct to Florida time. 
File Name
    104-0491_IMG.JPG
Camera Model Name
    Canon PowerShot A40
Shooting Date/Time
    20/01/03 02:05:56
Shooting Mode
    Auto
Color Effect Mode
    Off
Tv( Shutter Speed )
    1/13
Av( Aperture Value )
    3.5
Metering Mode
    Evaluative
Exposure Compensation
    0
ISO Speed
    Auto
Lens
    5.4 - 16.2mm
Focal Length
    9.4mm
Digital Zoom
    None


Image Size
    1600x1200
Image Quality
    Superfine
Flash
    Off
White Balance
    Auto
AF Mode
    Single
Active AF Points
    [ Left Center Right ]
Range Focus Mode
    Macro
Parameters
    Contrast          Normal
    Sharpness         Normal
    Color saturation  Normal
File Size
    807KB
Serial Number
    104-0491
Drive Mode
    Single-frame shooting
Owner's Name
    James Montague
 
All material and  images presented in these review pages are copyright (C) James Montague 2003, 2004.  . All rights reserved. This site may be freely linked to but not duplicated or presented in any way without my written consent.
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