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.
As always when testing a camera that is capable of recording
a RAW image — an image that has not sustained a lossy
compression to be recorded — most of the images shown
here were captured using the RAW format, opened using the
"as shot" settings, and then re-saved using the
TIFF format.
Photo
Information
Format:
NEF
Aperture:
f3.5
Exposure:
Program
Shutter Speed:
1/60 sec.
Resolution:
3872 x 2592
Flash:
On
Quality:
RAW
ISO:
100
File Size:
RAW: 7.8 MB
TIFF: 28.7 MB
Focal Length:
27 mm (35 mm Eq.)
The AF-S DX Nikkor 18-135 mm f3.5-5.6G
IF-ED kit lens was used to capture this wide angle image as,
unlike the more voluminous 18-200 mm also used in this review,
it does not cast a lens shadow at the bottom of the image
when the D40x's pop-up flash is used.
The i-TTL metering yields a very precise exposure, and the
white balance correctly evaluates the different light sources
and produces an image with accurate colours. The overall sharpness
is very good, and could even be increased more using software
such as Photoshop.
ZOOM PHOTO
Now we zoom in on a specific area. The intent
is to test the sharpness of the image at the zoom's maximum
setting. The camera remains at the same distance as with the
preceding photo.
For the telephoto image, the 18-200 mm, equivalent at the
telephoto end to a 300 mm, was used. The level of detail the
camera captures is excellent, as is the sharpness. The depth
of field is rather shallow, however, as the Program mode selects
the widest aperture possible. The image shows no trace of
noise and its colours are fully consistent with those captured
with the wide angle end of the kit lens, underlining the accuracy
of the D40x's white balance.
Photo
Information
Format:
NEF
Aperture:
f5.6
Exposure:
Program
Shutter Speed:
1/60 sec.
Resolution:
3872 x 2592
Flash:
On
Quality:
RAW
ISO:
100
File Size:
RAW: 7.9 MB
TIFF: 28.7 MB
Focal Length:
300 mm (35 mm
Eq.)
MACRO PHOTO
As with all digital SLR cameras, the quality of macro images
depends entirely on the lens used. To capture this image,
the AF-S DX Nikkor 18-200 mm f3.5-5.6G IF-ED
zoom was used. At the telephoto end, equivalent to a 300 mm
on 35 mm camera, the zoom is able to focus on a subject that
is 25 cm (10.4 in.) from the subject, making it possible to
capture a field of view that measures approximately 10 cm
(3.9 in.) horizontally.
Aperture: f16, speed: 100 sec., 100 ISO.
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.
This image was captured using the 18 to 200 mm lens. The
exposure the camera yields is excellent, and the highlights
contain as much detail as the shadow areas although the scene
presented some strong contrasts. Overall sharpness is good,
but a slight decrease in sharpness can be detected in the
corners of the frame.
Photo
Information
Format:
NEF
Aperture:
f5.6
Exposure:
Program
Shutter Speed:
1/125 sec.
Resolution:
3872 x 2592
Flash:
Off
Quality:
RAW
ISO:
100
File Size:
RAW: 9 MB
TIFF: 28.7 MB
Focal Length:
27 mm (35 mm Eq.)
With this type of subject, a faint
chromatic aberration can be detected on the edges of contrasting
areas, in this case under the beams that form a canopy over
the front of the building. However, there is no detectable barrel
distortion.
ZOOM PHOTO
Zooming in on the entrance of the building,
the shadowed entrance takes on a greater importance for the
metering and can cause an overexposure of sections that are
directly lit.
The 18 to 200 mm zoom includes an optical stabilization
system (VR) which allows the use of shutter speeds that would
on an unstabilized lens likely result in images blurred by
camera shake. Thanks to the VR system, the camera yields a
sharp exposure. And, once again, the exposure has the same
colour accuracy as the wide angle shot, while revealing detail
in both highlights and shadows.
Photo
Information
Format:
NEF
Aperture:
f5.6
Exposure:
Program
Shutter Speed:
1/160 sec.
Resolution:
3872 x 2592
Flash:
Off
Quality:
RAW
ISO:
100
File Size:
RAW: 7.38 MB
TIFF: 28.7 MB
Focal Length:
300 mm (35 mm
Eq.)
The image is completely free of
noise, even in shadow areas, and free of any chromatic aberration.
However, a bit of pincushion distortion is detectable in the
vertical image elements close to the edges of the frame.
NIGHT PHOTO
Since this camera is capable of long exposures,
a photo taken at night is included here.
Aperture: f3.5; shutter
speed: 30 sec., 100 ISO.
Able to capture images with
timed exposures as long as 30 seconds — the B (Bulb)
mode requires the use of the optional remote control —
and allowing complete control over all photographic parameters
when used in the Manual mode, the only limitation
when using the D40x is the imagination of the photographer.
A 30 second exposure at f3.5 and 100 ISO yields an image
that is much brighter and detailed than what can be seen with
the naked eye.
The D40x provides control over the noise reduction
system. In a case such as this that uses the lowest sensitivity
of 100 ISO, whether or not the noise reduction is used, the
image is noise-free. Indeed, whether the subject is captured
with noise reduction or without, the resulting images are
identical. And, knowing that noise reduction doubles the time
required to capture a long exposure, noise reduction is often
unnecessary for images captured between 100 and 400 ISO.
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