DSLR Test: Sony Alpha 330

Sony's new DSLR gets high marks despite its relatively low price.


Smack in the middle of a trio of new entry-level DSLRs from Sony, the 10.2MP Alpha 330 is an appealing option for photographers stepping up from compacts. A nice price ($650, street, with 18-55mm f/3.5-5.6 Sony DT SAM lens; $850, street, with an additional 55-200mm f/4-5.6 Sony DT SAM lens), fast autofocus, tilting LCD, and easy-to-understand controls are a few of its highlights. And it aced nearly all of our tests in the Pop Photo Lab.

Image Quality:

Typical of DSLRs these days, the A330 got an Excellent rating in our color accuracy test. With an average Delta E of 7.11, it handily beat our cutoff of 8 or below for top honors. As have previous entry-level Sonys, the A330 also scored quite well in noise control. Using the manufacturer's RAW converter (Image Data Converter SR), and with the default level of noise reduction applied, it never rose above a Moderately Low noise rating. That's two steps above the bottom rung on our scale.

At higher ISOs, Sony's noise reduction is quite aggressive and comes at the expense of real-world resolving power. Indeed, resolution was the one component of image quality in which the A330 fell behind its competitors. No surprise, since it starts out with fewer megapixels than most competing DSLRs, which have at least 12MP (the Canon EOS Rebel T1i, tested on page 64, leads the pack with a 15.1MP sensor).

At ISO 100, the A330's lowest sensitivity, it delivered 1970 lines of resolution (a High score) in our test. Once we reached ISO 3200, the default NR ate up 200 lines-not insignificant-for a result of 1770 lines. By way of comparison, the 12.3MP Olympus E-620 served up 1820 lines at ISO 3200, even with its default noise reduction applied.

Given the resolution, the A330 scores a Very High rating for overall image quality from ISO 100 through 400, pulled up a bit by its Excellent color accuracy and Very Low or better noise in that range. From ISO 800 through ISO 3200, overall image quality was High.

Autofocus And Live View:

The speed of the autofocus system is one arena in which the Alpha 330 shines. It focused faster than the Rebel T1i for the brighter half of our AF test, turning in a blazing 0.27 seconds at the brightest light level, EV 12. And while the Canon locked onto our target faster at EV 2, it wasn't by much-0.57 versus 0.63 sec for the Sony. All the way down at murky EV -1, the A330 focused in a speedy 1.02 sec. That was the limit of the Alpha's AF system-in less light than that, it couldn't focus-while the Rebel was able to focus at EV -2, the dimmest level of our test. Shooting in Live View mode? The Sony uses phase-detection AF, affording a much faster response, as the mirror doesn't have to flip in and out of the light path to allow the camera to focus on your subject. The downside? Because the Sony's live view comes from a separate sensor, you don't get 100-percent framing accuracy.

Handling And Controls

Sony made major changes in the build and design of last year's entry-level offerings. Like the new A230 and A380, the A330 is smaller than its predecessor, the A300.

The grip has also been redesigned: Although the new grip is more stylish, with a cool, textured rubber finish, we miss the A300's ridge that you could tuck your middle finger under, and even more the pronounced divot for the middle finger found on the A200. Your middle finger wraps over the top of the new grip, with your index finger resting on the shutter button. The older designs felt more comfortable when we rotated the camera or tilted it upward.

The control interface on the LCD is a radical departure. To appeal to novices who may be unfamiliar with camera jargon, Sony uses graphics: A shutterspeed scale shows an icon of a runner at the fast end and a stationary figure at the slow end. (We performed a nonscientific poll among non-SLR users, and they seemed to understand it.) The aperture scale depicts a person in front of a mountain-at the large aperture (small f-stop) end of the scale, the mountain is blurred to indicate shallow depth of field. If you don't like the scales, tap the display control on the touch pad and it'll revert to numerical versions, with a little more info about other settings such as white balance, AF, and metering modes.

A column of buttons on the left of the LCD was eliminated and those functions redistributed. Some are now on the control pad, while playback and trash get new buttons to the right of the LCD. The off/on switch for SteadyShot (sensor-shift image stabilization) was also eliminated- you now must jump into the main menu system to change its status. But if, like us, you leave it on unless you're panning or using a tripod, this is no big loss.

The 2.7-inch, 230,400- dot LCD tilts up and down, but it won't swivel the way those on the Nikon D5000 and most Olympus DSLRs do. Canon's Rebel T1i has a stationary monitor, but with a higher-res 920,000 dots.

Sony used to distinguish its DSLR kits from competitors by bundling them with an 18-70mm f/3.5-5.6 lens, longer than the 18-55mm range covered by Canon, Nikon, and Pentax kit zooms. Not anymore. The Alpha 330's kit lens spans exactly that standard range, equivalent to 27-82.5mm on a full-frame sensor (see our test on the next page). A second kit lens extends the reach to 200mm (300mm equivalent). Both of these sport Sony's Smooth Autofocus Motor (SAM).

Bottom Line:

There are always tradeoffs to consider when choosing an entry-level DSLR. We find a flexible LCD more useful than video capture, but if you're a family shooter who likes to switch quickly between stills and movies, you may disagree and miss the video. Compose your shots in live view? You'll love the Alpha 330's speedy AF, which doesn't slow you down. Ultimately, one of the best things about the A330 is the price. With a kit lens, it's the least expensive of all its competitors. That alone might make up your mind.

Imaging: 10.2MP effective, APS-Csized CCD sensor captures images at 3872x2592 pixels with 12 bits/color in RAW mode.

Storage: Memory Stick PRO Duo, SD, and SDHC. Stores JPEG, ARW RAW, and RAW + JPEG files.

Burst Rate: Full-sized JPEGs (Fine mode): Up to card capacity at 2.5 frames per second.RAW: Up to 6 shots at 2.5 fps (12-bit).

AF System: TTL phase detection with 9 illuminated focus points (1 center cross-type). Single-shot and continuous with tracking. Tested sensitivity down to EV -1 (manufacturer rated to EV 0) (at ISO 100, f/1.4).

Live View: TTL Phase detection.

Shutter Speeds: 1/4000 to 30 sec plus B (1/3-EV increments).

Metering: TTL metering using 40-segment honeycombpattern evaluative, centerweighted, partial and spotmetering. EV 2-20 (at ISO 100).

ISO Range: ISO 100- 3200 (in 1-EV increments).

Flash: Built-in pop-up with TTL autoflash with ±2-EV exposure compensation (1/3 EV increments), GN 33 (ISO 100, feet), covers 18mm lens field of view. Flash sync to 1/160 sec. Dedicated Sony/ Minolta hot-shoe and wireless control of optional flash.

Viewfinder: Fixed eye-level pentamirror.

LCD: 2.7- in. TFT with 230,400-dot resolution.

Output: Hi-Speed USB 2.0, mini HDMI video.

Battery: Rechargeable NP-FH50 Li-ion, CIPA rating, 510 shots.

Size/weight: 5.1x3.8x2.4 in., 1.1 lb with card and battery.

Street price: $650 with 18-55mm f/3.5-5.6 Sony DT SAM lens; $850 with 18- 55mm f/3.5-5.6 and 55-200mm f/4- 5.6 Sony DT SAM lenses.

Competitive Set:

Canon EOS Rebel T1i:

$800, street, body only; $900, street, with 18-55mm f/3.5-5.6 Canon EF-S IS lens

In the Pop Photo Lab and by the specs, this Canon beats the Alpha 330. It has significantly more resolution, thanks to its 15.1MP sensor. It focuses only ever-so-slightly slower than the Sony in bright light and just barely faster in very low light-but, more important, it can autofocus in extremely dim conditions where the Sony fails. The Canon also produces less noise across the ISO range and offers two stops more sensitivity by reaching ISO 12,800. Add to that the T1i's HD video capability, and bigger spenders have their decision made. Those of us on a budget, though, will end up thinking long and hard about the fact that the A330's dual-lens kit costs $50 less than the Canon's single-lens kit.

Olympus E-620:

$600, street, body only; $700, street, with 14-42mm f/3.5-5.6 lens; $800, street, with that lens, plus a 40-150mm f/4-5.6 zoom

This Olympus shares much with the A330, including sensor-shift IS and sensitivity spanning ISO 100 through 3200. Both demonstrated Excellent color accuracy in our tests and scored Very High overall image quality at lower ISOs. The Olympus couldn't keep up with the Sony's speedy AF, though, nor could it match its low noise. The E-620 did maintain more real-world resolving power than the A330, and we like its tilting and swiveling screen. Bargain hunting? Sony's single-lens kit costs $50 less than the equivalent Olympus kit, but its two-lens kit costs $50 more than the Olympus version.