
Canon PowerShot Pro1 Review
Phil Askey, April 2004

Review based on a production PowerShot Pro1, Firmware v1.00
Just when we had hoped that manufacturers were moving on
from the megapixel race we caught news of Sony's ICX456 eight megapixel
CCD sensor which was leaked
onto the Internet in June last year. And so at that time it wasn't
difficult to predict that we would see a rash of eight megapixel digital
cameras just in time for PMA 2004. Sony were first to market with their
DSC-F828 which utilized a unique version of this 2/3" Type chip which
instead of an RGBG color filter array had an all new RGBE color filter
array (more info here).
As predicted we each of the remaining 'big five' manufacturers introduce
their eight megapixel digital camera at PMA; Canon PowerShot Pro1, Nikon
Coolpix 8700, Olympus C-8080 Wide Zoom, Konica Minolta DiMAGE A2.
Canon's offering is the eight megapixel, seven times optical
zoom PowerShot Pro1. A camera which appears to bridge between what some
would like to call the 'G8' (an eight megapixel G series camera) and a
follow-on to the Pro70, Pro90 IS series. Canon's lens design is also interesting,
the same seven times optical range as we first saw in Minolta's DiMAGE
7 (and subsequently the 7i, 7Hi, A1 and now A2).
An "L-series" lens
Just as Sony did with the F828 Canon are ensuring that
they make a quality statement about this camera's lens. Not surprising
when you consider that the pixel pitch (the distance between the center
of each pixel location) of this 2/3" Type eight megapixel sensor
is just 2.7 µm (about the same as the 1/1.8" Type five megapixel
sensor used in some compact digital cameras). And the fact that it has
an 'ambitious' (by compact digital camera standards) 28 to 200 mm equiv.
zoom range.
This is the first time Canon have designated a digital
camera lens with the "L-series" label, normally reserved for
professional quality SLR lenses. Apparently this lens can carry this mark
because it has a combination of both UD (ultra-low dispersion) and fluorite
lens elements. I am sure that the 'L' mark will make many people ooh and
ahh, however the proof of the pudding, as they say, will be in the image
samples, lots of people got equally excited and later disappointed by
the Carl Zeiss T* lens on the Sony DSC-F828.
Despite having a large ring around the lens barrel the
zoom on the Pro1 is still 'zoom by wire' (electrically driven) rather
than the preferred mechanically linked setup as seen on the Minolta DiMAGE
7x, A1 and Sony DSC-F828. However Canon are at least driving the zoom
mechanism with a USM (ultrasonic motor) which provides both multiple speed
and relatively quiet operation.
The lens, while perhaps not as fast as the Sony lens does
have a very respectable maximum aperture of F2.4 at wide angle and F3.5
at telephoto. This should provide the AF system plenty of light for quick
focusing as well as the exposure system / photographer plenty of opportunity
to 'stop down' the lens (use a smaller aperture) for optimum sharpness.

If you're new to digital photography you may wish to read the Digital
Photography Glossary before diving into this article (it may help
you understand some of the terms used).
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This article is Copyright 2004
Phil Askey and the review in part or in whole may NOT be reproduced in
any electronic or printed medium without prior permission from the author.
For information on reproducing any part of this review (or any images)
please contact: Phil Askey
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