Sony Alpha SLT-A33

A great entry-level digital SLR, the A33 offers fast shooting speeds and very good image quality for most intents and purposes.


8.2
CNET Rating
8.0
User Rating

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When Sony announced to the world its latest digital SLR pair, the A55 and baby brother A33, people began to sit up and notice. These two cameras use a different mirror technology to traditional SLRs, called a translucent mirror (or a pellicle mirror). While it's not new, it's the first time it's been used on a digital SLR of this calibre. For more on how the technology actually works, click here.

The A55 and A33 are very similar to each other, with the A33 only losing out in terms of megapixel count (14.2 vs. 16.2 megapixels on the A55), continuous shooting speed (7fps vs. 10fps on the A55) and lack of GPS unit.

Design and features

The A33 is shaped just like any other digital SLR from Sony. Around the outside is a slightly textured plastic, which encases the substantial hand grip; all the other control buttons are plastic as well.

Things start to take an unexpected turn when inspecting the 3-inch, 16:9 aspect ratio screen (incidentally at a resolution of 921,000 dots), which can tilt and flip back in on itself. It's streets ahead of screens on other entry-level models, including the Nikon D3100, which is one of the strongest competitors for the A33.

The other big difference between this camera and the array of entry-level SLRs on the market is the electronic viewfinder, rather than an optical one. It provides 100 per cent field of view and is high resolution, but it's definitely something that you either love or hate. Shooting options and an electronic level can be overlaid on the image you see through the viewfinder, and the "always on" Live View mode means you can adjust your exposure and preview what the image will look like before taking an image. While this all sounds wonderful in theory, the viewfinder is very small and it doesn't feel like a true SLR experience.

On the mode dial are the standard array of shooting options anyone would expect, including full PASM control, two automatic modes, non-flash, scene, continuous and 3D sweep panorama mode. This camera is well equipped for most connection options, including a mini-HDMI port, mini-USB, external microphone input and remote trigger release. There's an instant movie record button around the back that starts the 1080i/30fps video recording in AVCHD format.

HD recording is limited to automatic exposure control. The A33 can also hit ISO 25,600 in boost mode, though it's unlikely that anyone would want to use this unless absolutely necessary.

Like other Sony SLRs, the A33 contains an image stabiliser inside the body, rather than in the lens. This means that any lens attached to the camera will be stabilised. As for files the A33 can produce, there's standard JPEG at 3:2 or 16:9 aspect ratios only and ARW RAW files, which can be read by the latest versions of Adobe Camera Raw and Lightroom.

Compared to

D3100 vs. 1000D vs. D5000

Nikon D3100 Canon 1000D Sony A33
14.2 megapixels 10.1 megapixels 14.2 megapixels
3-inch, 230,000-dot LCD 2.5-inch, 230,000-dot LCD 3-inch, 921,000-dot articulating LCD
HD video (1080p, 24fps) No HD video HD video (1080i, 30fps)
11-point AF 7-point AF 15-point AF (phase detection)
3fps 3fps 7fps

Performance

General shooting metrics (in seconds)

  • Time to first shot
  • JPEG shot-to-shot time
  • RAW shot-to-shot time
  • Shutter lag
  • Nikon D31000.40.810.4
  • Nikon D50000.20.40.50.3
  • Canon 1000D0.20.40.70.4
  • Sony A330.81.31.60.3

Continuous shooting speed (longer bars indicate better performance)

  • Nikon D31002.9
  • Nikon D50004
  • Canon 1000D2.9
  • Sony A337

Sony rates the battery for the A33 to last for 270 images when using the viewfinder and 340 when using Live View. While the A33 definitely does live up to its claim of shooting 7fps in continuous mode, the camera did slow down and stop taking images once it had snapped 16 JPEG shots in a row.

Image quality

The A33 produces accurate exposures for the most part, and has an impressive dynamic range. Colours are mostly accurate (though the screen on the camera itself is perhaps a bit too punchy) and the camera copes well up to ISO 800. ISO 1600 and 3200 produce very usable shots, too. Automatic white balance is pleasingly accurate.

While the translucent mirror system promises fast AF, the kit 18-55mm lens had a bit of trouble during our tests in focusing quickly and accurately in low-light situations, particularly at night. It took at least one second for the camera to grab onto a focus point, and sometimes continued to seek focus even if an appropriate point was found. Continuous autofocus also was a little troublesome.

Compared to other kit 18-55mm lenses on entry-level models from Canon and Nikon in particular, the Sony version is a little less refined, showing up chromatic aberrations and with more edge softening. For most purposes though, it won't present too much of a problem, particularly if you won't be making large prints or inspecting images at 100 per cent magnification.

RAW vs. JPEG

A33 RAW vs. JPEG

The A33 processes its JPEG files very well, with a little extra sharpening thrown into the mix. (Credit: CBSi)

Video quality

The A33 produces very good video files at its native 1080i resolution. When using the 18-55mm lens, it does show up its weaknesses more prominently, like its lack of edge in sharpness and fringing. There's no manual controls available for video recording and audio does sound a bit tinny from the internal microphone.

Sony has revealed that the A33 and A55 are limited to recording nine minutes of video in normal operating conditions (20 degrees Celsius) or six minutes (above 30 degrees Celsius). These times are increased to 29 minutes when turning off the internal image stabilisation. This limitation is due to the translucent mirror technology.

Image samples

Click each image for full-sized samples from the A33. No post-processing has been done to alter these photos.

Exposure: 1/50, f/5.6, ISO 1600

Exposure: 1/30, f/5.6, ISO 1600

Exposure: 1/80, f/8, ISO 100

Exposure: 1/50, f/4.5, ISO 200

(Credit: CBSi)

Conclusion

A great entry-level digital SLR, the A33 offers fast shooting speeds and very good image quality for most intents and purposes.

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Add Your Review 8


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SyedS Facebook
6
Rating
 

"one of the best entry level cameras for both filmmakers and photographers, except for its bad sensor"

SyedS posted a review   

The Good:light weight, faster speed, and mic port for filmmakers

The Bad:small sensor and less video settings

the camera is fantastic and records high resolution video, and a faster camera but the only downside i found is that the sensor heats up quickly and results in the camera going off

Qjoi
9
Rating
 

Qjoi posted a review   

The Good:7 fps, phase detection auto focus

The Bad:Will need to spend extra on a lens

This is a beautiful camera that produces great image quality and the 7fps feature is AMAZING! Also, the HDR dynamic range feature that allows you to take 3 photos then stitches them together to form a photo with amazing dynamic range. The 3D photo feature is great if you have a very expensive printer or HD tele. You will not be disappointed, except maybe with the lens which can be sorted out by spending around £200 on a decent lens if your'e on a budget. Stigma lenses are very good for those on a budget, Sony brand and Carl Zeiss are the very best. Avoid Tamron, though, not very good sharpness with them.

shan22
9
Rating
 

shan22 posted a review   

The Good:Easy to use, great features, price, takes a great photo

The Bad:battery life is limited (although it's still sufficient for normal photo taking)

I bought my A33 yesterday and have not been able to put it down. Being a novice, I wanted something that was easy to use, but also I could learm how to use properly... with the help of the shop assistant I choose this camera... so far I am finding it to be a great all round camera all my shots whether in low light, action or any condition for that matter have turned out well.. I am looking forward to taking this overseas in a couple of weeks to see waht it can really do!!!!

Matttheewww
5
Rating
 

Matttheewww posted a review   

"Sony has revealed that the A33 and A55 are limited to recording nine minutes of video in normal operating conditions (20 degrees Celsius) or six minutes (above 30 degrees Celsius)."
Is that 9/6 minutes straight or altogether?

 

AlexandraS posted a reply   

That would be 9 minutes or 6 minutes of straight, continuous shooting.

newfoundlander 58
9
Rating
 

newfoundlander 58 posted a review   

The Good:Usability is much better than expected.

The Bad:Needs a "g" lens or similar quality.

My camera of choice is a year old A900 with a sony 70-200 f/2.8 which pretty much stays on the mount.I also have a Canon sx 30 which i use more than i thought i would since i got it for xmas.
My friend recently bought a A33 and i have been using it the last couple of days alongside my own. It will be a hard camera to give up. The speed and night shooting along with the electronic viewfinder are only a few of the things I will miss with this camera. I read reviews that were critical of the ergonomics but it fit my smallish hands well.
I swapped the bundled lens with my "g" lens and the difference was more than clearly visible. That said i dont think most people who buy this camera will be buying a lens costing 2.5 times the cameras price.
Intermediate users will find transition to the A33 an easy move and also a best buy in this category. I would rate this camera at least a high 8 and this from someone using eons more costly equipment.

 

kbm posted a comment   

image qual compared to the d3100? I cant decide between the two.....its all coming own to the image....

 

Jayodi posted a reply   

I would like to know a response to this also...




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User Reviews / Comments  Sony Alpha SLT-A33

  • SyedS

    SyedS

    Rating6

    "the camera is fantastic and records high resolution video, and a faster camera but the only downside i found is that the sensor heats up quickly and results in the camera going off"

  • Qjoi

    Qjoi

    Rating9

    "This is a beautiful camera that produces great image quality and the 7fps feature is AMAZING! Also, the HDR dynamic range feature that allows you to take 3 photos then stitches them together to for..."

  • shan22

    shan22

    Rating9

    "I bought my A33 yesterday and have not been able to put it down. Being a novice, I wanted something that was easy to use, but also I could learm how to use properly... with the help of the shop ass..."

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