Pentax Announce More Equipment
by Miserere
A little over a week ago Pentax announced the entry-level (by price, not specs) K-r with a cheap 35mm, both in many happy colours. After a very dry 2 years as far as new gear in concerned, Pentax needed to bring something strong to the table. They’re already losing shooters to full frame brands, they don’t need to start losing APS-C shooters too. The K-7 was a change of direction towards a smaller DSLR with advanced capabilities and competitive price. It provided an upgrade over its predecessor, the K20D, but incorporated a new version of Samsung’s 14MP CMOS sensor that didn’t offer any better performance than that the K20D’s sensor (some still say it’s downright inferior). Although the K-7 sold well amongst low ISO shooters, those wanting to photograph in the dark flocked to the (theoretically) lower level K-x. The one comment I saw repeated over and over again in the fora was all I want is a K-7 with the K-x sensor. It seems Pentax have gone a step further.
Pentax K-5
Behold the Pentax K-5. Externally almost identical to the K-7, it also inherits most of the firmware from its predecessor, and there’s nothing wrong with that. The main differences are just two: The sensor, now Sony’s 16.1MP CMOS, and the updated autofocus system, now the next generation SAFOX IX (also in the K-r and 645D), which Pentax is claiming is a big step up from the K-7, especially in AF-C mode. This remains to be seen, but initial reports suggest it is better. After seeing some prerelease high-ISO images taken with the K-5 and the Nikon D7000 (with which it shares a Sony 16MP sensor) I can say that this is the camera Pentaxians wanted the K-7 to have been…but even better. Once the price comes down to $1,200-1,300 it will be a strong seller I’m sure. Here are the main specs (noted when different to K-7):
- Sensor: 16MP CMOS manufactured by Sony (the K-7 had a 14MP sensor by Samsung).
- Battery: Li-Ion rechargeable, same as the K-7
- New autofocus module, SAFOX IX (K-7 had SAFOX VIII).
- Standard ISO range: of 100-12,800, expandable to 80-51,200 (K-7 was 100-12,800). Currently the APS-C DSLR with highest ISO available!
- 7 FPS (K-7 was 5.2 FPS).
- 77-segment multi-pattern metering system.
- AF adjustment for individual lenses.
- AF assist lamp.
- 3 inch 921k LCD screen (K-x is 2.7 inch 230k).
- Automatic compensation of distortion and lateral chromatic aberration (available only with DA-,DFA- and FA Limited-series lenses).
- Dark frame subtraction can be turned off for exposures longer than 30s (you couldn’t on the K-7). Anecdotal evidence
- Price: US$1,600 body only (likely to come down quickly given competition by the Nikon D7000).
Pentax DA 18-135mm f/3.5-5.6 WR
Pentax’s rebadged version of Tamron’s 18-250mm f/3.5-6.3 (currently $300 on B&H!) proved to be quite popular with enthusiasts who wanted do-it-all walk-around lens for when changing lenses isn’t desireable or practical. Pentax discontinued the lens recently and some speculated a WR (Weather Resistant) version would be forthcoming. Well, it hasn’t shown up, but instead Pentax have announced a WR 18-135mm f/3.5-5.6 that will be available as a kit lens with the new K-5. The reduced focal length range should make it lighter, smaller, and a better performer optically, although the aforementioned 18-250mm has a solid reputation for a superzoom.
Of note in this new Pentax lens is the optical design which, for the first time as far as I’m aware, places the focus lens group at the rear of the lens and the zoom group at the front. Other lens makers, like Nikon, have been using this type of design for years but Pentax never had. This has implications for the arrangement of the rings; now the ring closest to the camera controls focusing while the one furthest away is for zooming. This design cuts down on the distance the focus group has to travel, which should theoretically make autofocusing faster (or use less battery juice at the same speed). And speaking of autofocusing, this lens is also the first time we see the term ‘DC’ applied to the in-lens focusing motor. Up until know pentax called their in-lens focusing system ‘SDM’ (Silent Drive Motor). There have been complaints from Pentax users about failing SDM in certain lenses—Pentax have remained silent on the matter so far. Is this DC designation a cheaper SDM version or an updated (read: improved) in-lens motor system? From the press release:
Extra-smooth SDM autofocus operation
A DC motor built into the lens’ AF (autofocus) unit assures extra-smooth autofocus operation. It features a rotation-free mechanism to keep the focus ring stationary during autofocus operation. The user can hold the lens in exactly the same way as when using it in the manual-focus mode.
Note that all SDM lenses feature focus rings that don’t turn when the lens autofocuses. Furthermore, the Pentax 17-70mm f/4 is also an SDM lens yet it has distance markings on its focus ring, something the 18-135mm lacks, which makes me wonder if it’s intended for absolute beginners who have no need nor use for distance markings. But then this lens features 7 rounded diaphragm blades, which are usually found in upper end lenses… Pentax, I’m confused!
And What Else?
This is where we run into problems: There is nothing else. A mirrorless camera has been in the rumour mill for a few months, people are desperate for teleconverters, many want to know about future plans for a full-frame DSLR… Yet silence is all they found.
The next big fair is the PMA, which has now moved to Septermber (it used to be in March), so I wouldn’t expect anything new from Pentax until then. Why? Because anything to be launched early to the middle of next year should at least be available as a mock up if not a working beta unit right now (see the Fuji X100, not scheduled for release for another 6 months yet shown at Photokina). I could, and hope to be, wrong.
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Tags: Cameras, DA 18-135mm f/3.5-5.6, DSLR, Lenses, Pentax, Pentax K-5, Photography, Photokina 2010

















its funny that when people do something new other always seem confused. I think in the direction consumers are going is no one ever really looks at the markings on their lenses maybe some old pros but I’ve been shooting for a while and never have a i looked at the distance scale on an AF lens either Pentax or Nikon. Manual lenses are different yes I use the scale.
I’ve read many forums now about people being confused about Pentax doing this and that and well what I see is it take time for people to catch up to what Pentax is doing and it won’t be popular till Nikon does it…oh they already do do this on some of tier lenses.
I personally am pretty happy with the two lens announcement…for with the zoom as it is the same length i use on the Nikon and for most thing you don’t really need another lens.
I think the main problem here is lack of communication. Pentax aren’t explaining anything to its userbase and they’re all confused. Do we really need all this secrecy? Is Pentax going to lose millions of dollars if it tells us that there will be no FF within the next 5 years and that they’re not planning on a mirrorless camera? All the resentment this silence and secrecy builds up amongst users cannot be measured in dollars, but the lost revenue from users that flee the brand because they’re tired of this treatment can, and will, be measured in dollars/yen/pounds/pesos/etc.
As for the 18-135mm, it’s the lens I wanted 3 years ago when I was using zooms a lot more; now it’s too late. Too late for me, but not for others, which is why I welcome it and believe it will become very popular and make Pentax a good profit.
Good job on the K-r,K-5 and DA35.
”
“Let me just be the first to offer my services in case you do decide to leave Pentax. I would be kind enough to take care of all your unwanted Pentax gear; because I have a big heart.
Eres demasiado bueno conmigo, Cesar :-p
Small detail correction, the DA 17-70/4′s focus ring does spin during AF operations, so it is the only SDM lens that does this.
I don’t consider this a *big deal* but it seems to me that decoupling *can* allow for larger manual focus rings (a la D-FA 100/2.8 Macro, DA* lenses) but in some cases lensmakers obviously don’t take advantage of this (new DA 18-135).
I would think it might also make it possible to make for longer focus path for manual focusing while preserving fast AF but I don’t know if this has been done in practice. This might be one advantage of ‘focus-by-wire’ conceptually as it truly decouples manual focus speed from AF speed but I don’t know if this is the way focus-by-wire systems really work in practice.
Thanks for the correction, Andrew!
Some Sigma lenses have a different AF and manual focus turn ratio (for lack of a better term). When you turn the manual focus ring the distance scale moves only half as much; this allows for a short throw providing faster AF, but the manual focus throw is twice as long so you also get good manual focusing. I know for sure the Sigma 30mm f/1.4 does this, and I’m sure I’ve seen it on some other but can’t remember which.