Here are a few images that accurately reflect the abilities
of any given camera model. The images are altered only in
terms of size and sharpness after reduction and by the JPEG
compression used. Unless otherwise mentioned, assume that
any marbling or artifacts visible in the images are due to
the compression required to display them here. We feel however,
that they still faithfully represent the results we experienced.
STILL LIFE PHOTO
This subject is photographed in a room that has
a mix of fluorescent and incandescent light, but which is not
brightly lit. The camera's flash is used to add fill light.
The backdrop is 1.95 m (6.5 ft) from the camera.
Set to Auto ISO, which can boost the sensitivity automatically up to 200
ISO, the built-in flash of the DX7630 is described as having a maximum
range of 4.2m (13.8 ft) when the zoom is at the wide angle position and
the exposure benefits from the widest aperture of the lens.
Photo
Information
Format:
JPEG
Aperture:
f2.8
Exposure:
Program
Shutter Speed:
1/60 sec
Resolution:
2856 x 2142
Flash:
On + 2/3EV
Quality:
6.1M Fine
ISO:
100
File Size:
1.97 MB
Focal Length:
39 mm (35mm Equiv.)
However, set to 100 ISO, the reach
of the flash is shorter, and to brighten this photo flash compensation
of +2/3 EV was used.
The photo the camera produces is good but it appears the compression has
softened the details somewhat.
ZOOM PHOTO
Now we zoom in on the centre of the image above to gauge the
sharpness of the image at the zoom's maximum setting. The camera
remains at the same distance as in the preceding photo.
As with the wide angle shot shown above, the telephoto shot
is also captured with a flash compensation of +2/3EV to yield
a brighter image than what
the default settings produce at 100 ISO. Here again, the relatively
strong compression applied to the image, even at the highest
image quality, tends
to soften details slightly.
Photo
Information
Format:
JPEG
Aperture:
f4.8
Exp:
Program
Shutter Sped:
1/90 sec
Rees:
2856 x 2142
Flash:
On + 2/3EV
Quality:
6.1M Fine
ISO:
100
File Size:
2.26 MB
Focal Goth:
117mm (35mm Equiv.)
Aperture: f8, shutter speed: 1/500sec, 100 ISO.
MACRO PHOTO
In macro mode and at the wide angle end of the zoom, the
DX7630 can focus on a subject at a distance of 7cm to 70cm (2.8
to 27.6 inches), and from 28cm to 70cm (11 to 27.6 in.) when
the zoom is at the telephoto end.
At the closest distance, the lens captures a field of view measuring approximately
7.3cm the narrowest field of view possible in macro mode.
BUILDING PHOTO
This image is our outdoor test. The architecture
of the building, in particular the angled girders, immediately
show the presence of jaggies. The shadowed entrance can also
often reveal the quality of the exposure.
The DX7630 yields very accurate exposures, whether under bright light or
very low light. Moreover, the lens is free of any serious chromatic aberration,
or distortion.
Photo
Information
Format:
JPEG
Aperture:
f4
Exposure:
Program
Shutter Speed:
1/500 sec
Resolution:
2856 x 2142
Flash:
Off
Quality:
6.1M Fine
ISO:
100
File Size:
2.33 MB
Focal Length:
39 mm (35mm Equiv.)
ZOOM PHOTO
At the full telephoto setting of the zoom, the image the camera captures
is precisely metered. Likewise, the auto white balance yields colours that
are very consistent with those captured at the wide angle setting, although
the content of the frame is substantially different.
Still, a lesser compression would have probably produced a crisper image,
and would have probably allowed the small sign on the glass door to be
more legible.
Photo
Information
Format:
JPEG
Aperture:
f4.8
Exp:
Program
Shutter Sped:
1/250 sec
Rees:
2856 x 2142
Flash:
Off
Quality:
6.1M Fine
ISO:
100
File Size:
2.6 MB
Focal Goth:
117 mm (35mm Equiv.)
NIGHT PHOTO
Since this camera is capable of long exposures,
a photo taken at night is included here.
Aperture: f2.8; shutter
speed: 32 sec., 100 ISO.
Although the DX7630 is capable of
a 64 second exposure, the subject in this case is too bright
and a 64 second exposure results in an over exposure.
Already, a 32 second exposure such as the one shown here, is
clearly overexposed in parts.
The DX7630 applies a noise reduction process to eliminate most of the noise
gathered over the course of the exposure, and the system is effective.
However, the impressive imaging
capability of the DX7630 for long exposures is somewhat offset
by the fact that the compression available to the user. Indeed,
even at the highest image quality, is probably still a bit too
strong in comparison to other cameras with generally similar
abilities, and this level of compression does affect the overall
image sharpness of which the camera is capable.
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Test Photos
