Sony SLT Alpha A55 In-depth Review
18 Conclusion & Samples
Conclusion - Pros
- Reliably good image quality at lower sensitivities
- High ISO JPEG output usable up to ISO 12800 for smaller prints
- Excellent LCD and good EVF, with efficient automatic switch.
- Versatile and capable (for its class) 15-point AF system
- Accurate metering and focus
- Very Good JPEG resolution
- Very good (almost 9EV) dynamic range
- Good quality HD video output
- Swivel-screen useful for overhead- and video shooting
- Good ergonomics all around, good build quality, nice handling
- Very compact design
- Excellent digital level gauge in EVF/LCD
- Useful Fn menu allows direct access to many important settings
- Very usable manual focus mode (including up to 15x image magnification)
- Lots of cool features - 10fps, Auto HDR, Multi-shot NR etc., (automatically selected in Auto+ mode)
- Auto+ mode makes the various continuous shooting modes (see above) available to novices
- Efficient image stabilization system
- Built-in GPS handy for organising images (though it can struggle in built-up areas)
Conclusion - Cons
- Limited control in 10fps and movie modes
- AF system not quite up to capturing fast action
- No live view in 10fps/6fps shooting makes panning almost impossible
- Slow (50 seconds) buffer clear time (RAW-mode)
- Little control over high ISO noise reduction in JPEG mode ('auto' or 'weak')
- Visible loss of detail at anything over ISO 400 in JPEG mode (noise reduction too strong)
- Menu system a little confusing (hard to orientate yourself sometimes)
- 'Ghosting' can be an issue in certain scenes (clipped specular highlights against dark backgrounds)
- EVF slightly more prone to RGB 'tearing' than competitors
- Image review not separately configurable for EVF and LCD
- Awkward to navigate between stills and movie playback modes
- LCD unusually prone to finger prints and smearing (reducing visibility in very bright light)
Arguably, the age of the consumer-level DSLR dawned in 2000 with the Canon EOS D30, and although a lot has happened in the intervening decade - higher and higher pixel counts, huge improvements in low-light image quality, speed and usability - much has remained the same. A surprising amount, actually. Mechanically, today's DSLRs operate in exactly the same way as their film predecessors. A Sony Alpha A900 might look very different to a Pentax Spotmatic, but the basic principles of their operation are the same.
The Sony Alpha SLT A55 and A33 are completely new designs which offer several key advantages over 'traditional' DSLR technology. Their large, bright EVFs are at least a match for conventional optical finders in many situations (and better than the finders in the majority of entry-level DSLRs) and full-time phase-detection AF in movie mode is a revelation compared to the slow, clunky contrast-detection focusing that we've become used to in live view from some other cameras.
The 'headline' 10fps shooting mode is useful in some situations, but ultimately we can't help feeling that it is something of a red herring. The A55 is an excellent camera but it is not the ideal tool for shooting fast action. The limitations of using the 10fps mode - (no live view updates, no aperture control if you want AF during the burst) limit its effectiveness, and although it is good for its class, the A55's 15-point AF system is not in the same league as higher-end cameras when it comes to predictive focusing. This shouldn't be taken as a serious criticism (the A55 is after all a mid-range camera), but anyone looking for EOS-1D Mark IV AF performance on a budget will be disappointed.
The A55's 16.2MP CMOS sensor is new, and in collaboration with the camera's image processing, it offers excellent image quality. Detail capture is excellent at low ISO settings, though strong noise reduction does take its toll on detail at anything over ISO 400 (though it must be said that we're talking pixel-level detail here, which isn't something most people are going to worry about when shooting at ISO 1600).
The A55's JPEG image quality is - at normal viewing magnifications, useable up to ISO 12,800 in a pinch. At lower ISO settings the A55 is able to resolve almost the same amount of visible detail as the Canon EOS 550D, which is currently the highest resolution camera in its class. Dynamic range is excellent too, at almost 9EV, which matches the best of the competition.
The A55's extension ISO 25,600 setting, where 6 JPEG images are taken in quick succession and blended together to reduce noise is interesting and, assuming your subject is static, it works very well. Because it's a JPEG combination mode this highest setting is not available in RAW - it's a shame as we'd be curious to see what careful processing could get out of such a file. The A55's RAW files, as usual, offer a better starting point for in-depth processing post-capture, especially towards the high end of the ISO scale, but the gap between JPEG and RAW quality from the A55 is not as wide as we've seen in some previous Alpha cameras in this class.
Overall, image quality gives little cause for complaint (and is often excellent), with reliable exposure, color, white balance and focus (when not shooting at high burst rates) reliable enough that you can concentrate on the important stuff, like framing and actually taking the picture.
Image quality in movie mode is very good too, and like the NEX-5, the A55 can produce excellent HD movie footage in either Motion JPEG or the more efficient but slightly awkward AVCHD format. Some rolling shutter effect and occasional focus-shots are visible in certain shots, but no worse than other video-enabled cameras in its class.
The A55's handling is defined by its innovative design. In use, the A55 feels like a cross between a good midrange DSLR and a high-end 'bridge' model, but its focus system and large, high-resolution viewfinder surpass our expectations of both types of camera. Because the A55's EVF is so large, it easily matches most optical viewfinders for clarity, and outclasses most of Sony's own Alpha DSLR range. Compared to the A55 the viewfinder of Sony's own Alpha 550, for example, is simply unpleasant - cramped, dim and low in contrast.
That said, a lot of the display area is wasted when shooting in the 3:2 aspect ratio. Even when shooting in 16:9, there are still two narrow bands of unused pixels at the top and bottom of the main image. This isn't a problem, (the image is certainly crisp and detailed enough) but it is a little odd. And it means that when the A55 is shooting in its highest resolution mode, the scene area is covered by roughly 80% of the total 1.44 million pixels, leaving 20% effectively unused.
In most respects, the A55 is a pleasure to use. Its control layout is to some extent 'classic' Sony Alpha but the changes that have been made compared to a model like the A550 make it easier, and more pleasant to operate. No longer, for example, is the ISO button blocked by the neck strap, no longer do you have to switch into a separate live view mode in order to magnify the image for accurate focusing and no more do you have your shooting experience interrupted by warning of mode/feature conflicts.
The A55 also features the neat 'Fn' menu that is so sorely lacking in the NEX-3 and NEX-5, which makes accessing most key settings very easy, and saves diving into the rather tedious menu system (which is badly in need of a refresh). Poorly signposted menu aside, in terms of handling, the A55 is definitely our favorite Sony Alpha since the much-missed Alpha 700.
The Final Word
With the Alpha SLT A55 (and its near-relation the A33) Sony has thrown down the gauntlet to the other major manufacturers. These new cameras are both genuinely innovative, and very capable. Sony first introduced phase-detection AF in live view mode with the A350, but the A55 takes things to a completely different level, thanks to its fixed mirror design. Rather than being an optional mode with some disadvantages (less than 100% view, no magnification in Fast AF Live View mode) live view is absolutely integral to the A55's operation and works very well.
Coupled with what appears to be an excellent sensor, and good ergonomics the A55 must count as one of the strongest contenders in its category, and one that in some respects completely re-aligns our expectations of what is possible in consumer-level equipment. Naturally though, we have some criticisms - when shooting fast action the A55's 15-point AF system cannot deliver on the promise of its 10fps shooting rate, and the lack of live view refreshes except at its lowest 3fps setting makes panning very hard to judge. The lack of aperture control in AF-C mode at 10fps is an inevitable but unfortunate consequence of full-time AF, too, and manual control over movie shooting is limited as well.
Since publishing this review we have taken the opportunity to investigate the much-discussed 'ghosting' effect of the A55's semi-transparent mirror. Our conclusion - if you know where to look for ghosting, you might find it on close examination, but we don't consider it to be a problem in the vast majority of 'real world' shooting situations.
Ultimately it is the 'bread and butter' stuff - the excellent all-round performance of the A55's key systems, its fluid ergonomics and largely hassle-free handling that really make it stand out, and we have no hesitation in giving it a gold award.
Category: Mid Range Interchangeable Lens Camera / DSLR
Ergonomics & handling
Metering & focus accuracy
Image quality (raw)
Image quality (jpeg)
Low light / high ISO performance
Viewfinder / screen rating
Movie / video mode
The Sony SLT-A55 is an excellent all-rounder with a comprehensive feature set. The translucent mirror technology gives it an innovative touch and the best live view AF on the market. Continuous-shooting performance is the best in its class--just don't plan on shooting the Olympics with it.
Scoring is relative only to the other cameras in the same category.
Click here to learn about the changes to our scoring system and what these numbers mean.
There are 41 images in the samples gallery. Please do not reproduce any of these images on a website or any newsletter / magazine without prior permission (see our copyright page). We make the originals available for private users to download to their own machines for personal examination or printing (in conjunction with this review), we do so in good faith, please don't abuse it.
Unless otherwise noted images taken with no particular settings at full resolution. A reduced size image (within 1024 x 1024 bounds) is provided to be more easily viewed in your browser. As always the original untouched image is available by clicking on this reduced image.
Sony SLT-A55 Review Samples
Aug 12, 2013
Aug 24, 2010
Sep 7, 2010
Aug 24, 2010
|.....the ROYAL LOTUS 2017/08/25-NEW YORK..... by Chiwat|
from Wild flowers
|Coffee and Mango cake by clicker88|
from Another cup of coffee
A Craigslist poster has discovered the worst possible way to photograph a car: taking pictures of pictures displayed on a cracked and scratched up smartphone screen.
With the iPhone X coming out soon, the title probably won't last, but the iPhone 8 Plus is officially the best smartphone camera DxOMark has ever tested, and the iPhone 8 is second.
Kodak's new Facebook Messenger chatbot is trying to bring back the 'Kodak Moment' by digging up your old social media photos and trying to sell you prints and custom coffee mugs.
Affinity Photo for iPad was touted as "the first full blown, truly professional photo editing tool to make its way onto the Apple tablet." This update makes it that much more convenient.
Yashica has released a new teaser video, and this one claims they'll be releasing an "unprecedented camera" in October on Kickstarter. Ready... set... speculate!
Storage solutions company Synology has just released its very first 6-bay NAS tower. Combined with the DX1215 expansion units, it can hold and control up to thirty drives.
We're always expanding our collection of product overview content, and we've just added videos for the Canon EOS 6D Mark II, the EOS Rebel SL2 and EOS M6.
The venerable Canon PowerShot G1 was announced seventeen years ago this week, marking the start of a line of enthusiast-focused compacts that's still alive and kicking.
Super macro photographer Can Tuncer captured these incredible close-ups of a single peacock feather using a special setup and three different microscope lenses.
After successfully crowdfunding the Biotar 75mm F1.5, Oprema Jena is at it again. This time they're bringing back the Biotar 58mm F2: the world's only lens with a 17-blade aperture.
Adobe's move to a subscription model is treating it very well indeed. The company has posted record revenue for the second quarter in a row, hauling in a mind-boggling $1.84 billion.
More details have emerged about the potential sale of Blackstone's 45% stake in iconic camera brand Leica.
Popular mobile editing app Snapseed just got a major update that includes a new interface and 11 new presets for both Android and iOS, as well as adding the Perspective tool to the iOS version.
It might sound like a strange idea, but taking macro photos of boiling water can actually result in some really cool photographs. A good photo experiment for a rainy day.
The database was created to "break with the narrow lens through which history… has been recorded" by equipping those who commission photography with "the resources to discover photographers of color available for assignments.
Lensbaby has released two new optics for their special "optic swap system." The Lensbaby Sweet 80 Optic gives you that trademark sweet spot of focus, while the Creative Bokeh optic gives you 9 different drop in aperture plate options to play with.
TechCrunch has already posted their review of the upcoming iPhone 8 (not yet the iPhone X), and they're calling it "a look into the augmented future of photography."
Affinity Photo is a $50 photo editing software with no subscriptions. That's it – pay for it once and you're done. And we think it's actually pretty darn good.
Instagram is currently testing a major change to the app's profile layout: replacing the 3-photo across grid with a 4-photo grid... and some users are NOT taking the news well.
A report by USSRPhoto is shedding some light on the return of the famed Zenit camera brand. It seems the full-frame mirrorless camera they're working on will be made in part by Leica using components from the Leica SL.
According to a reliable Korean report, Samsung is developing a smartphone sensor that's capable of super slow motion. Translation: Samsung's next batch of Galaxy smartphones may be able to shoot 1,000fps.
This simple photograph of a seahorse and Q-tip has taken the internet by storm. We spoke to photographer Justin Hofman about how it was captured, and what it means to him.
After a massive leak last week, Profoto has officially debuted the Profoto A1: the company's first on-camera flash system that they're calling "the world's smallest studio flash."
"When the first hyperfocal distance charts were designed, someone decided that an acceptably sharp background contained some blur — enough to notice in a medium-sized print [...] After that point, nearly every other hyperfocal chart followed suit."
The Canon EOS Rebel SL2 (also known as the EOS 200D) is the company's impressively compact entry-level DSLR. Packing a 24MP APS-C sensor, DIGIC 7 processor and Dual Pixel AF, it promises a lot of bang for the buck. And while not mind-blowing, it handles most tasks very well.
Correct these four common composition mistakes and your photos will be more balanced, tell a better story, and lead your viewer's eye where you want it to go.
The rugged, compact 360° action camera Kodak unveiled at Photokina in 2016, the Kodak PixPro Orbit 360, is finally available in the United States.
iOS 11 launches tomorrow, and it'll save all of your pictures in a new high efficiency image format called HEIC. Fortunately, there's now a converter that will let you turn those photos back into JPEGs.
Photo protection company ImageRights recently released a new service that lets non-subscribers take advantage of their streamlined copyright registration system that checks for errors and fills out all the required forms for you.
What's the difference between a $200 circular polarizing filter and a $100 circular polarizing filter? Roger Cicala at Lens Rentals put six different filters through a few tests to find out.