The successor to the venerable K-5 brings a vastly improved SAFOX X processor, and the option to be had without an antialiasing filter.

Pentax K5II review by Jim Keenan at Digital Camera Review: Flagship imaging features and quality at a prosumer level price.

"Persons for whom video is a major selling point in a DSLR may want to look at a brand other than Pentax. While the K-5II produces a fairly decent quality full HD video image, the full HD is available only at 25 fps, which may impact faithful rendition during capture of fast moving subjects. More significantly, the AF system does not feature a continuous autofocus and, unlike the K-30 doesn't even allow the user to reestablish a second autofocus point, albeit slowly, during any single video capture. Like the K-30, the K-5II is a little slow to transition to live view after switching the mode dial into video. Arguably, the entry-level/prosumer model K-30 offers a superior video component to the company's flagship. . . . read more

Pentax issues new firmware updates for for the K-5II/s, K-30, K-01, K-5 and K-r Dslr Cameras.

Not as sweeping update, here's what's new:

Optimized contrast AF when using [HD PENTAX-DA 560mmF5.6ED AW] lens.
Improved stability for general performance.

Get the update for your camera at the Pentax global software download page.

Pentax K-5 II vs K-5 IIs side-by-side shootout by John Riley at EPZ: "Removing the AA filter lends an incredible clarity to the detail in images. Shoot carefully on a tripod, use good lenses and the benefits will definitely be worth it."

So, removing the AA filter does have a big impact on the picture clarity and resolution. How big of an impact? Check out Johns' full sized side-by-side image samples, they give a pretty good idea on the difference. 

"This was clearly an interesting proposition and I was keen to see for myself what difference, if any, the removal of the AA filter would make. The conclusion was quite obvious as soon as the images were examined. Removing the AA filter lends an incredible clarity to the detail in images. Shoot carefully on a tripod, use good lenses and the benefits will definitely be worth it. Architecture, landscape, still life, studio work, all will benefit from the IIs variant. However, to be fair, the II . . . read more

Pentax K-5IIs review by John Riley at EPZ: ...so does it make a difference? Yes, a significant difference. Is it worth the difference in price? Yes.

Pentax K-5 II, and Pentax K-5 IIs dslr cameras

This is a review of the K5-IIs model, one of two Dslr cameras without an Antialiazing filter currently available on the market, the other being the Nikon D800E. The Camera was tested with the smc DA 18-135mm f/3.5-5.6 ED AL [IF] DC WRsmc DA 18-55mm f/3.5-5.6 AL WR and the smc DA 18-270mm f/3.5-6.3 SDM lenses, a bit of a curious choice when evaluating a highly resolving camera like the K-5IIs. And for all us peepers, there are many full-res images with intact EXIF information accompanying  this review:

"This review was started as a journey of discovery, hoping for the answer to the basic question – does it make a difference and is it worth the difference in cost? The camera is basically well established – compact, efficient, rugged, weather  . . . read more

Pentax releases firmware version 1.01 for the K-5II and K-5IIs, adds contrast adjustment on rear lcd and improved stability.

Pentax K-5 II, and Pentax K-5 IIs main features firmware download

"Thank you for using a PENTAX K-5II/K-5IIs digital camera.
PENTAX wishes to announce the release of Firmware Update Software Version 1.01 for K-5II/K-5IIs.
Firmware in this document is the software that runs inside digital cameras.
Changes to V1.01
Enabled contrast adjustment on Monitor.
(Added [contrast ]on [LCD setting ]menu)
Improved stability for general performance.

. . . read more

Pentax K-5 II with DA 18-135mm f/3.5-5.6 ED AL DC WR lens review at PhotoRevue: If photography is what you're doing, and you want a very capable Dslr and lens combination that is also weather sealed, this thing is for you. Skip, if you want good video.

Pentax K-5II black, rear.

"Noise was very well controlled and image files shot at the highest sensitivity settings could be considered usable at small output sizes, provided allowances were made for some softening of details and visible granularity. Up to ISO 3200 noise was barely visible. At ISO 6400, slight granularity could be seen when images were enlarged. Granularity became a little more pronounced at ISO 25600, which was when softening became evident. But it wasn't until ISO 51200 that noise and softening made images almost unusable. . . . read more

The Pentax K-5IIs (its the one without an anti-aliasing filter) gets measured up by DXO Mark, comes out unscathed.

"Removing the anti-aliasing filter for greater definition on the Pentax K-5 IIs hasn’t had a negative impact on its DxOMark Camera Sensor Ratings. It’s an exceptional camera that’s top of its class for semi-pro models and holds its own against many expensive pro models, too. It can’t compete with the latest evolution of Nikon full-frame models, like the D600, D800 & D800E or the Sony A99. Where it does fall down however is in the Sports category with Low-Light ISO ratings that don’t come close to professional sports cameras or the full-frame models of the Nikon D600, D800 or D800E. If it’s a studio or . . . read more

Pentax K-5 IIs vs Pentax K-5 II Moire and sharpness comparison and analysis at NeoCamera.

Moire, what it looks like.

A very nice little test, where both the difference in Moire, and the effect of the anti-aliasing filter can have on sharpness is clearly visible:

"The lens starts losing sharpness at F/5.6 where we see the diagonal pattern weakening. By F/6.7 is is minimal on the K-5 II but still strong on the K-5 IIs. At F/9.5, the anti-alias filter of the K-5 II prevents moire while the K-5 IIs still shows a clear diagonal pattern. Stopping down further, one can see the diagonal pattern gone from the K-5 IIs when it passes the diffraction limit at F/13. . . . read more

Pentax K-5II review at NeoCamera: Stuffed with a myriad of features, this Dslr is best at almost everything, except for sports.

Pentax K-5II black, front, no lens.

"Image quality is top-notch, with only the K-5 IIs delivering more details among cropped-sensor DSLRs. It shows extremely low noise, very good sharpness, superb dynamic-range, natural image colors and outstanding white-balance. The unique RAW data recovery feature presents an entirely different image workflow, where one can shoot JPEG and only when needed turn the last capture into a RAW file and reprocess it either in-camera or one the computer. Still, the K-5 II has such sophisticated image parameters that one has a tremendous control over the look images. . . . read more

Pentax K-5 II/s Gets DXO marked, and earns a crown: The best Aps-c Dslr ever, bravo Pentax.

Pentax K-5 II with lens

"The Pentax K-5 was released in September 2010 (review for the Pentax K-5), just over 2 years before the K-5 II. What Pentax appears to have done is to incorporate the last 2 years worth of technological advances into essentially the same camera. There is an increase in the low-light performance but it is very slight. Reading through the specifications side by side they could almost be interchangeable. The differences that are there include an improvement in the performance of . . . read more

Pentax K-5 II Review at PhotographyBlog.com: Small but thoughtful upgrade to an already excellent camera.

"The K-5 II's image quality is excellent, producing noise-free images all the way from from ISO 80-800. Noise starts to become apparent at ISO 1600, with a little more noise and smearing of fine detail at the higher settings of 3200 and 6400, while the fastest speeds of 12800, 25600 are suitable for smaller prints. The incredible headline-grabbing top-speed of . . . read more

Pentax K-5 IIs review at NeoCamera: The best Aps-c camera yet, at least when it comes to photography.

"Image quality is unrivaled among cropped-sensor DSLRs with extremely low noise, class-leading sharpness, superb dynamic-range, natural image colors and outstanding white-balance. The unique RAW data recovery feature presents an entirely different image workflow, where one can shoot JPEG and only when needed turn the last capture into a RAW file and reprocess it either in-camera or one the computer. Still, the K-5 IIs has such sophisticated image parameters that . . . read more

Pentax K-5 II/IIs grand review at Pentax Forums

If there is one single review you need to read if you're interested in this camera, this is it. It may have some slight pro Pentax bias, but let;s face it, most people that will look into the K-5II/IIs are already Pentax gear owners:

"The K-5 IIs offers significantly increased resolution at low ISO when used with sharp lenses and when there is no . . . read more

Description by Pentax:

Pentax reveals the K-5 II/S, their new flagship DSLR that comes with, or without an anti-aliasing filter.

And that's not the sole major new feature. A lot of photographers will be extremely pleased to know that the K-5 mark II is also a low light focusing king, with the ability to focus down to -3 EV. That's a whole EV better than the best in the current generation of DSLRs made by other manufacturers. Slated for a October 2012 release, and priced to €1,000/ £799.99/$1,199.95 (body only), €1100/£869.99/$1349.95 with the 18-55mm WR kit lens. Remove Add 100 bucks for the option to have the anti-aliasing filter removed. Thank you Nikon for setting this trend. . . . read more

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