The Minolta Dimage 7 is a mid-size $900 5-megapixel digital camera with a
28-200 (35mm equivalent) macro zoom lens (f/2.8-3.5). The camera is arranged
rather like a zoom-lens reflex, e.g., the Olympus E-10/E-20. However, instead of
a mechanical mirror and optical prism, the viewfinder consists of a window into a
4.8mm LCD display, similar to the viewing system of a video camcorder.
Having a purely electronic purely virtual viewfinder has some advantages.
Forgot to put a flash card in? A huge "no card" sign blinks in the center of the
viewfinder. Camera settings can be optionally overlaid on the image. Viewfinder
coverage is very close to 100 percent, i.e., substantially more accurate than any
point-and-shoot digital camera's optical viewfinder. What you see with the Dimage
7 is what you get.
Minolta has adapted the eye-start sensor from its film SLRs to the Dimage 7.
If you have your eye up to the viewfinder, the in-viewfinder LCD is activated.
Pull your eye away from the viewfinder and the rear panel LCD activates
automatically.
Ergonomics are very good, considering the small size of the camera. Zooming is
accomplished via thick rubberized ring on the lens. Manual focus is available by
pushing a button on the side of the camera and then turning a ring at the back of
the lens. The included lens hood bayonets on and off. The included lens cap
includes central spring releases so that it is easy to remove the cap while the
hood is affixed.
Experienced photographers will appreciate the camera's standard manual,
shutter-priority, aperture-priority, and program autoexposure modes. Manual mode
is inconvenient due to the "one-dial" design of the Dimage 7 and the awkward
placement of the controls that shift the dial from shutter speed to aperture.
Shutter speeds up to 1/2000th of a second are available.
Power is derived from 4 AA batteries. You can use disposable alkalines but
Minolta recommends rechargeable Ni-MH and claims that a fully charged set of
Ni-MHs is sufficient to capture 200 images. Our testing indicates that 50 is a
more realistic number.
The images illustrating this article were taken at as "Fine" JPEGs at the
camera's maximum resolution of 2560x1920 pixels.
Speed of Operation
- Power on to first image capture: 5-6 seconds.
- Sleep to first image capture: 5-6 seconds (requires two presses of the
shutter release, one to wake up the camera and one to take a picture)
- Autofocus on human face, outdoors: 1-2 seconds.
- Inter-exposure lockout: about 1 second with instant playback disabled and set
to manual focus (camera memory sufficient for up to three fine JPEG frames in
succession)
Like so many other digital cameras circa 2002, the Dimage 7 is a frustrating
companion when your subject is moving. Most of the time when you want to take a
picture the camera won't be ready. By the time the camera has warmed up your
subject has cooled off or moved on or started to frown. If you're accustomed to
the instant autofocus of a modern film SLR, the slow and hunting-prone autofocus
system of the Dimage 7 will be irritating.
Areas for Improvement
Noise at ISO 800 is abysmal:
Minolta has demonstrated the ability to put an orientation sensor into a
camera. Their Maxxum 7 film SLR displays text on its rear LCD appropriate to how
the camera is being held. Why then is the Minolta Dimage 7 unaware of its
orientation relative to the Earth? If you take a lot of vertical images you'll be
spending some time and effort on your personal computer rotating them from the
horizontal.
Included Software
Minolta packages the Dimage 7 with a CD-ROM that will install a very basic
image viewer onto your Windows or Macintosh machine. This utility is capable of
displaying of thumbnails, rotating selected images in a batch, basic color
correction, conversion of Dimage 7 RAW format (12 bits/color) into 48-bit TIFF
files, and copying of files from the flash card to a user-selected directory on
the PC's file system.
Warning: Minolta's software is not smart about handling JPEGs. If you use the
software merely to copy a JPEG image from flash card to hard drive, the software
de-JPEGs and re-JPEGs the image, resulting in a loss of quality and an expansion
in file size. If you use the software to rotate an image 90 degrees, the software
unnecessarily decompresses and recompresses the image. JPEG is a lossy standard
and those concerned with image quality will want to avoid decompression and
recompression.
Minolta makes no attempt to help a consumer manage a collection of digital
images. Despite the software's simplicity and shortcomings, Canon remarkably
remains the leader in this area with its ZoomBrowser EX.
Specialized Features
The Dimage 7 can make 60-second long 320x240 pixel movies. The camera includes
an intervalometer. Minolta certifies the camera for use with IBM Microdrives.
Although the Dimage 7 has a standard pop-up flash it also offers compatibility
with Minolta Maxxum accessory strobes. Note that Minolta has a non-standard hot
shoe design. This is more secure than the ancient design used by all other camera
manufacturers but also completely incompatible.
Competition
If you want small and don't need the long lens, you're better off with a
camera packaged more like a conventional point and shoot, e.g., the Nikon 5000 or
Canon G2. If you need the long lens for action photograpy you'll want a camera
with better autofocus and faster operation, e.g., the Olympus E-10/E-20 or a
digital SLR body and conventional telephoto zoom.
Where to Buy
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