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Digital Camera - Ken Gilbert

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128<br />

KITzONE<br />

Slr grouP teSt<br />

whatsoever. On the other hand, if<br />

you’re ofthe opinion that video<br />

shooting is best left to camcorders,<br />

the wide range of advanced, photofriendly<br />

controls provided on the<br />

50D and E-30 make them appealing.<br />

Firmly ensconced in the opposite<br />

camp, the Canon 550D brings<br />

powerful, High-Definition video<br />

features to the party –features<br />

unseen as yet in this price range.<br />

.<br />

SIzE IS EVERYTHING<br />

For most high-tech gadgets, including<br />

digital compacts, smaller is sexier,and<br />

you’ll often pay a premium for ‘tiny’.<br />

There’ssomething to be said for<br />

lightweight, compact SLRs in this<br />

pricerange, especiallyifyou’reinto<br />

travel or outdoor pursuits. However,<br />

there’s a real compromise in terms of<br />

handling –abigger build givesSLRs a<br />

more natural feel, making them easier<br />

to use and guarding against camera<br />

shake at slower shutter speeds.<br />

Manyofthe latest SLRs go<br />

the extra mile to give you shake-free<br />

shots, utilising various forms of<br />

How we test SLRs advice you can trust<br />

There are two strands to our SLR<br />

test process. The first involves<br />

testing each camera under real world<br />

conditions, where they are put<br />

through their paces in everyday<br />

scenarios ranging from dull interiors,<br />

through to gloomy overcast days and<br />

bright sunshine. All features and<br />

functions are tested as the camera<br />

would be used on a day-to-day basis.<br />

The second strand of our test<br />

process involves testing each SLR<br />

within <strong>Digital</strong> <strong>Camera</strong>’s ownspecially<br />

constructed controlled testing<br />

environment. Each camera is fitted<br />

<strong>Digital</strong><strong>Camera</strong> July2010<br />

Below Introducing<br />

newfeatures such<br />

as hD video has led<br />

to aslightincrease<br />

in the weightof<br />

mid-range SLR<br />

camera bodies<br />

with aSigma 50mm f/1.4prime lens<br />

and industry-standardcolour (x-Rite)<br />

and greyscale (Q-14) step charts are<br />

shot under daylight bulbs, with the<br />

same white balance, ISO and aperture<br />

settings used on each SLR.<br />

The RAW files from each SLR are<br />

then processed with Imatest software<br />

and aseries of benchmarks fornoise,<br />

colour accuracy,exposureaccuracy<br />

and dynamic range are generated.<br />

youcan see the benchmarks forthis<br />

test on page 139.<br />

See Trusted Tests on page 112<br />

for more information on this process.<br />

Shop smart <strong>Camera</strong> systems<br />

A vital<br />

anti-shake technology. Canon and<br />

Nikon favour ‘optical’ stabilisation<br />

built intothe lens, with their IS<br />

(ImageStabilizer)and VR (Vibration<br />

Reduction) systems. These work in<br />

essentiallythe same ways,using an<br />

extra micro-processor-controlled,<br />

motion sensitive group of elements.<br />

The Olympus, Pentax and Sony<br />

cameras in this group feature sensorshift<br />

stabilisation, which is built into<br />

the camera body so that the sensor<br />

itself is shifted to compensate for any<br />

movement in the camera. It’s a system<br />

that became popular in camcorders,<br />

but has made the transition to SLRs<br />

(and compacts) extremely well.<br />

Sensor-shift stabilisation is generally<br />

not quiteascompetent as lens-based<br />

optical stabilisation, but it’sstill<br />

worth having,and the fact thatit<br />

factor when choosing any ‘system’ camera, like<br />

an SLR, is that you’re buying into the depth, breadth<br />

and quality of a complete system rather than just the<br />

camera itself. For example, buy a Canon or Nikon and<br />

you get access to an almost endless list of available<br />

lenses, flashguns and other own-brand or third-party<br />

accessories. The diversity for some other makes can be<br />

a little more limited or come at a higher price. For<br />

example, buy aqualitystandardzoom lens and you’ll pay<br />

£800 for the Canon EF-S 17-55mm IS uSM, as opposed<br />

to a monstrous £2,000 for the Olympus 14-35mm f/2<br />

SWD. It pays to understand what you’re committing to.<br />

works with any lens you decide to use<br />

is another point in its favour.<br />

The control system is avital area of<br />

camerahandling and, here, the main<br />

choiceisbetween acomplexarray<br />

of dedicated buttons for quick access<br />

to araft of essential settings, or a<br />

simplified, less clutteredlayout. More<br />

buttons canmakefor moreconfusion<br />

at first,but having fewerbuttons runs<br />

the risk of burying important<br />

parameters in relatively inaccessible<br />

menus, making them hardtoget at<br />

and adjust when you’re in a hurry.<br />

PAYING FOR THE VIEw<br />

At the higher end of the price bracket,<br />

youcan expect to getabetterquality<br />

pentaprism viewfinder,instead of the<br />

cheaper pentamirror viewfinders<br />

usuallyfitted to cheaper SLRs. This is<br />

For most high-tech gadgets, smaller is sexier.<br />

Butwhile youoften payapremium for‘tiny’,<br />

it comes at the expense of handling – a bigger<br />

build definitely gives SLRs a more natural feel<br />

<strong>Digital</strong> editor Ali Jennings shoots acolour step chartfor this test<br />

in the <strong>Digital</strong> <strong>Camera</strong> controlled testing environment

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