Casio Exilim EX-Z1000 Review
Review Date: July 10th 2006
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Image Quality
All of the sample images in this Review were taken using
the 10M Fine mode, which gives an average image size of around
4Mb.
Noise
There are 4 ISO settings available on the Casio Exilim EX-Z1000
which you can select at any time if the camera is in the normal
shooting mode. Here are some 100% crops which show the noise
levels for each ISO setting:
There is virtually no discernible noise at the slowest settings
of ISO 50 and 100, but there's quite a lot of noise at ISO
200 and the fastest speed of ISO 400 has very obvious noise
and blurring of detail.
High Sensitivity Mode
The Casio Exilim EX-Z1000 has a High Sensitivity Best Shot
mode. This mode allows you to handhold the camera without
using the flash and get more natural results by raising the
ISO speed to a maximum of 3200 and therefore allowing for
a faster shutter speed. There are some obvious drawbacks with
this special scene mode, notably a significant reduction in
quality and resolution - the manual states that "Shooting
with High Sensitivity can cause an image to appear somewhat
coarser than normal and can cause slight deterioration of
image resolution." You also need to select the scene
mode and therefore have some idea about when it is applicable
to your subject. Here are some 100% crops which show the noise
levels:
Anti Shake
The Casio Exilim EX-Z1000 has an electronic anti-shake mechanism,
which allows you to take sharp photos at slower shutter speeds
than other digital cameras. To test this, I took 2 handheld
shots of the same subject with the ISO speed set to 50. The
first shot was taken with anti shake turned off, the second
with it turned on. Here is a 100% crop of the image to show
the results.
As you can see, with anti shake turned on, the images are
sharper than with anti shake turned off, but there are a number
of important caveats to consider before using this feature.
Firstly, anti shake doesn't work unless the ISO speed is set
to Auto, which effectively means that the camera always sets
the speed to 200 (thereby increasing noise). Secondly, the
images taken with anti shake on are obviously of poorer quality
than with the feature turned off. The manual states "Shooting
with Anti Shake can cause an image to appear somewhat coarser
than normal and can cause slight deterioration of image resolution."
You can clearly see this in the examples above. So you may
gain sharper images, but this comes at the expense of obvious
noise and decreased resolution.
Sharpening
Here are two 100% crops which have been Saved as Web - Quality
50 in Photoshop. The right-hand image has had some sharpening
applied in Photoshop. The out-of-the camera images are slightly
soft at the default sharpening setting of 0 and benefit from
some further sharpening in a program like Adobe Photoshop.
Alternatively you can change the in-camera sharpening level
to one of the preset levels (-2 to +2).
File Quality
The Casio Exilim EX-Z1000 has 3 different image quality settings
available, with Fine being the highest quality option. Here
are some 100% crops which show the quality of the various
options, with the file size shown in brackets.
Chromatic Aberrations
The Casio Exilim EX-Z1000 suffers quite badly from chromatic
aberrations, with purple fringing present around the edges
of objects in high-contrast situations and also in shots where
you wouldn't really expect it to occur. It is quite well controlled
when it does appear, but this is one of the prices that you
pay for squeezing 10 megapixels onto such a small sensor.
Macro
The Casio Exilim EX-Z1000 offers a Macro setting that allows
you to focus on a subject that is 6cms away from the camera
when the lens is set to wide-angle. The first image shows
how close you can get to the subject (in this case a compact
flash card). The second image is a 100% crop.
Flash
The flash settings on the Casio Exilim EX-Z1000 are Auto
Flash, On, Off, Red eye-reduction and Soft Flash. These shots
of a magnolia coloured wall were taken at a distance of 1.5m.
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Auto Flash - Telephoto (114mm) |
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And here are some shots of yours truly. As you can see, neither
the Flash On setting and the Red-Eye Reduction option caused
any red-eye.
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Flash On (100% Crop) |
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Flash - Red-Eye Reduction (100%
Crop) |
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Night Shot
The Casio Exilim EX-Z1000's maximum shutter speed is 4 seconds
in the Night scene mode, which is not very good news if you're
seriously interested in night photography. The shot below
was taken using a shutter speed of 4 seconds at f/5.4 at ISO
200. I've included a 100% crop of the image to show what the
quality is like.
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100% Crop |
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Overall Image Quality
The Casio Exilim EX-Z1000 produced images of below average
quality during the review period. The 10 megapixel images
were a little soft straight out of the camera at the default
sharpening setting of 0 and ideally require some further sharpening
in an application like Adobe Photoshop, or you can increase
the in-camera sharpening level. The Casio Exilim EX-Z1000
dealt poorly with chromatic aberrations, with limited purple
fringing appearing in quite a lot of the review test shots.
Macro performance is average, allowing you to focus as close
as 6cms away from the subject. The built-in flash worked quite
well indoors, with no red-eye and fairly good overall exposure,
although the maximum range of 1.9m at the telephoto setting
is disappointing. The night photograph was a weak point, with
the maximum shutter speed of 4 seconds in the Night scene
mode limiting what you can achieve. The Casio Exilim EX-Z1000
didn't deal with noise particularly well. The 1/1.8 inch,
10 megapixel sensor used in the Casio Exilim EX-Z1000 produces
noise-free images at ISO 50 and ISO 100, with but there's
quite a lot of noise at ISO 200 and the fastest speed of ISO
400 has very obvious noise and blurring of detail. Anti-shake
is a feature that sets this camera apart from its competitors
on paper, but in reality it drastically degrades image quality.
The new High Sensitivity mode extends the ISO range and allows
you to take photos in low-light without having to use flash,
but again the image quality is adversely affected. Overall,
a pretty poor performance from the EX-Z1000.
 PhotographyBLOG
is a member of the DIWA
organisation. Our test results for the Casio Exilim EX-Z1000
have been submitted to DIWA
for comparison with test results for different samples of
the same camera model supplied by other DIWA
member sites.
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