Flip and twist LCD screen enables a greater number of shooting angles and
options
Bad points
Occasional picture softness due to camera shake
Image noise visible at ISO400 and above
No rechargeable batteries supplied
Overall Although the Powershot A640 would benefit from some
form of built-in image stabilisation, it's another reliable performer from
Canon, while the adjustable screen and high 10-megapixel resolution makes it
worthy of serious attention.
Rating:
Price:
£330
Canon’s A-series Powershot range is synonymous with budget-priced, plastic
feel digital compacts suitable for beginners. The flagship
Powershot
A640 bucks that trend, feeling neither cheaply made nor priced, at around
£300.
Cramming 10 megapixels onto its chip and featuring a flip-and-twist
‘vari-angle’ 2.5in screen for either high or low angle shooting, plus attractive
matt black finish, it’s also more sophisticated than we’ve been led to expect.
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Other features include a fast Digic II processor as found in Canon’s more
professional SLRs, 9-point auto focus to ensure your subject is sharp wherever
it is in the frame, 21 shooting modes, plus light sensitivity up to ISO800, the
latter respectable if hardly class leading. Optional accessories include wide
(0.7x) and tele (1.7x) converter lenses plus a waterproof case.
A press of the slightly recessed on/off button and the
A640
powers up in just over a second, its 4x optical zoom lens extending to maximum
wide-angle setting and the viewing screen activating simultaneously. Power comes
courtesy of four AA batteries that both lend it some weight and keep
replacement simple – however, you have to cup a hand under the base to stop them
falling out when swapping memory (a 32MB SD card is supplied).
There’s an auto focus assist light to help out when shooting in low light,
though it struggles to find critical focus if your subject’s more than a couple
of feet away. Mystifyingly there’s no image stabilisation provided to counteract
camera shake under such circumstances. Happily the strength of the flash can be
manually adjusted to avoid a bleaching look when it does have to be used.
Canon’s icon-like menu folders are easy to navigate, and the viewing screen's
visibility is good under most conditions.
The images the A640 delivers are commendably bright and clear, with warm
colours and flattering skin tones, though there’s occasional image softness when
shooting at the maximum zoom setting due to the effects of camera shake. The
maximum ISO800 is usable, though image noise – grain-like speckles – is visible
from ISO400 upwards.
Though not perfect, the A640 still delivers the goods more consistently than
your average snapshot.
Also consider Casio Exilim Zoom EX-Z1000
Slim-line 10-megapixel snapshot camera that’s responsive, looks stylish and is
capable of a crisp performance.
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