I’d really looked forward to getting my mitts on this camera. The reviews have been tantalising: Imaging Resource said: ‘the Pentax Kx has enormous value, thanks to its remarkable image and print quality, fine build, and class-leading burst speed, all combining to make one impressive digital SLR camera.’

The boys at DP Review were no less effusive: ‘Pentax has managed to squeeze what is … an impressive feature set into the camera’s minuscule, rather inconspicuous, body and the image quality, especially in low light, is the best we have seen so far in the entry-level bracket of the DSLR market. To put some icing on the cake, all of this comes at a currently, compared to the closest rivals, very attractive price point.’
The camera also made Editor’s Choice at my favourite photo magazine. And I’d seen the sensor tested at DxO labs a week or two ago and that really made me curious.
A word on my methodology
I should make clear that I don’t test or review cameras the way DP Review or Steve’s Digicams do. I test cameras as a user, just as I’ve tested PC programs and operating systems for years. Good design is about a great user experience, something very few companies are good at Technoledge. So I don’t read the manual at first because I want to know how easy the product is to use, and how intuitive the controls and navigation are. Would anyone actually read the 300 page manual? Not unless she’s stuck on a dessert island with nothing else to do.
First Impressions
The test camera wasn’t a nice red one as I’d imagined (yes, it comes in white and navy blue as well), but a dull black unit. The K-x is a fraction bigger than my old Nikon D40, which I’ll use as a benchmark since it was entry-level DSLR champ 3 years ago. The Pentax is a bit heavier with 4 standard NMH rechargeable batteries in its handgrip. The second dull note comes from the ordinary viewfinder and the vital shooting data on the bottom row, which is hard to read in bright light. By contrast, the screen on the back is bright and the info pretty clear. The autofocus is snappy if noisy, and response to the trigger is immediate. No complaints about the handling.

Take some test shots in the evening light, I struck another dull note as Aperture Priority mode seemed to worked to a dark priority of its own. Switching to manual turned off auto ISO, which I didn’t realise at the time, so I still wasn’t hearing music. I couldn’t read the tiny exposure number in the viewfinder either and ended up using the shoot-and-check-the-screen method.
At home in front of my PC, I discovered that the standard USB cable I use for my Nikon and Canon cameras didn’t fit the Pentax – a real discord as I’d lent my SD-to USB-gizmo to a friend and had no way to pull any photos out of this camera.
A mixed bag of results
More frustrations, after looking at the files coming off the Pentax’s SD card. Shots from Cremorne Point across the harbour lacked detail long before the light faded. None of the long shots I took that afternoon was any sharper, and the light and shade contrast seems exaggerated. It was a golden afternoon, not bell clear but not hazy either.

Later shots to Circular Quay across the harbour lacked detail as well, even though the sun was still above the horizon. As it got darker, I took some shots at ISO 1600 to test the sensor’s reportedly good high ISO capability but struck another sour note.

In the end, I decided to set up a comparison with the Nikon D40 on a tripod. The D40 is not a high ISO champ in anyone’s book but the results shot at ISO 3200 were a surprise. These are 100% crops, reduced a little to fit here.

To make them the same size, I reduced the K-x shot by 50% (12mp vs 6 mp) which actually makes it look better. I have no idea how this can be, but I can only tell it as it is.
In normal light, the K-x produces images with good colour depth and dynamic range, but so does the old D40 (left, different day, different hibiscus).

Looking for answers
I have a hunch that the 18-55 kit lens on the K-x isn’t much chop. The distortion at the wide end is mind-bending, which is a hint. It would explain the lack of detail in landscape shots, if not the high ISO performance. I have no other Pentax lenses, so I can check reviews online. DP Review says ‘corners have had to be cut to keep cost down.’ An article at Photo.net is more blunt: potentially adequate for outdoor photography on sunny high-contrast days.’
The review at Photoreview says: ‘… resolution only met expectations with raw files.’ In plain language: JPEGs weren’t sharp enough. The RAW photos I’ve taken with the K-x are no better but RAW gives you more room for enhancement. RAW files also take more room, period, ending up somewhere between 10 and 15mb and slowing my PC’s editing speed to a crawl. With the kit lens, all I say is that K-x takes great photos in good light – like the one below.

With some distance between the camera and the subject, things get fuzzy. Here’s an example shot in bright daylight from about 30m distance at ISO 400, 1/250, so camera shake isn’t an issue:

It’s time to try some other things and that means opening the manual, which is one of best I’ve come across. Live View works well enough. It’s not a feature I plan to use since I’m more comfortable using a viewfinder. I try video, and it’s just as easy: choose your preferred settings for quality, sound, aperture control, focus and shake reduction from the menu, switch the top dial to movie and off you go.
Video quality is similar to the Nikon D90, and audio is fair. HDR is just as easy – select it from the menu and keep your finger on the trigger. The most astonishing feature of the K-x by far is its burst-mode: Almost 5 frames/sec is a speed more commonly found in prosumer or pro cameras. The K-x should be great for action and sports.
Marketing
‘BREAK ALL THE RULES – Choose a camera that redefines the entry-level digital SLR category.’ So the Pentax website claims. ‘The PENTAX K-x offers high-end features including Live View, HD video and photographic performance that challenges higher class models.’Â
The K-x is a well-built, well-thought out DSLR. It sells at a Nikon D3000 price but offers D5000 performance, at least on paper, and I suspect the battles in the entry-level DSLR market are largely won and lost on paper since most of the buyers are upgrading from digicams with lots of smart features. Pentax has done its homework here with a winner on paper.
Most buyers at this end of the market choose cameras for their features but never use most of them, so Pentax has given them a feature-packed camera that can point and shoot with the best of them. The choice of bright body colours will also appeal to first time DSLR buyers looking for a bit of chic.
K-x is right on target
People buying their first DSLR have few reference points in the new territory but expect common digicam features like live view, video, anti-shake, lots of scene functions, digital filters and in-camera processing (which here includes correction for lens distortion and compensation for blown highlights and dark shadows).
Pentax delivers plenty, including video recording at 1280 x 720 at 24 frames a second with mono sound, for up to 11 minutes at the HQ setting. For still photography, a new cross processing mode randomly shifts photographic parameters for each exposure to create eye-catching images with unique colours. Other big features include:
- High-precision 11-point AF sensor
- In-body image stabilisation
- 4.7 frames/ second burst mode
- Dust Removal for image sensor
- High dynamic range function for creating composite images
- White balance control with new CTE mode for sunset scenes
- Automatic compensation of distortion and lateral chromatic aberration
- K-mount takes all recent Pentax lenses.
Ease of Use
Despite the feature load, the K-x is as simple to use as you want. Buttons are few, navigation is logical and menu screens are easy to read. The more detailed menu screens for finer settings are easy to get to as well.
Liveview will please those who’re used to digicams but has the usual issues common to DSLR implementation: slow contrast detect autofocus, trouble focusing in low light, and so on.
The early problems I had with the were a combination of being unfamiliar with the K-x’s workings and the Manual and AP shooting modes. I had no idea that auto ISO doesn’t work in Manual, but I can see the logic at a stretch. In the end I used scene mode settings which gave the most consistent results, and that’s probably how most users will operate this camera.
Performance
The shortcuts Pentax has made to the K-x to meet the price point won’t be obvious to buyers coming from digicams: the ordinary viewfinder and the lack of AF point illumination in it, for example, and a pretty basic LCD by DSLR standards.
It was the ‘photographic performance that challenges higher class models’ that interested me the most, and this was a claim echoed in many reviews. The camera produces photos with faithful colours and good dynamic range, but the high ISO performance was disappointing. So was sharpness, for which I blame the lens.
I got used to not seeing AF markings in the VF but metering was suspect at times, making images too dark. In Manual mode, the small exposure correction number in the bottom right of the screen was hard to read. In bright light, even the big numbers down there are hard to read.
Conclusions & Recommendations
I have no doubt that the K-x is a real hit for Pentax. It offers a long list of serious features for the money, and most of the buyers won’t be disappointed. However, I was surprised that a camera with an advanced 12mp sensor couldn’t produce pictures as sharp as the old 6mp Nikon D40, which was released late in 2006.
Nor did the on-paper dynamic range of the K-x translate to real-life images. Often, the highlights and shades in bright sunlight were too harsh without compensation on (something I’d prefer not to do as a rule).
The K-x may have a lot to offer first time DSLR buyers, but for this user its offered a strange mix of features and omissions, and there was nothing about it that really grabbed me. Lucky for Pentax, I’m not the market for the camera.
If you’re thinking of buying one, think about opting for a different lens. Pentax makes a higher quality 18-55 and a dearer 17 – 70mm, and Sigma makes a bargain 17 – 70mm f/2.8-4.5 DC Macro lens which is offered in a K-x kit, at least in Oz, for some $200 more. Adorama lists the lens for less than $400 on its own. See the links below for more lens options and details. I suspect a decent lens may well give the K-x a fair chance to show what it can do.
Pentax K-x Buying Options at Amazon
Resources
Post from: Digital Photography School – Photography Tips.

Pentax K-x Review [Muscling in on Nikon and Canon]



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