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Pentax K-7 First Look Review

by Justin Serpico, July 2009 (updated February 2011)


The arrival of the new Pentax K-7 enters Pentax into the competitive ranks of video/still DSLR cameras. The K-7 features a 14.6MP CMOS sensor, larger 3" LCD screen with 921,000 pixels. Comparing features and price, the Pentax K-7 is similar to the Canon EOS 50D and the Nikon D90. Like all Pentax DSLRs, the K7 features sensor-shift body-based image stabilization (up to 4 stops).

Out of the box, the K-7 is noticeably smaller than the K10/20D, and it’s far more angular in stature. This is Pentax’s first radically different camera since the K10D design, and there is plenty to discover.

Note: This hands-on review covers my first impressions of the Pentax K-7. Accompanying photos/test shots, illustrations, and a full length in-depth review will follow in the next few weeks.

Where to Buy

Photo.net’s partners offer the Pentax K-7, (compare prices). Their prices are fair and you help to support photo.net.

Build

Despite the hype of increased robustness, it appears to be about equal to the K10/20D on initial impression. Although the K-7 has a magnesium alloy shell rather than the K10/20D polycarbonate that over time should prove more durable, the exterior coverings look very similar, and the K-7 finish matches that of the DA* lenses. Other than the exterior of the K-7 being somewhat cool to the touch it’s hard to tell it’s metal shelled. The K-7 is smaller but not vastly lighter than the K10/20D, most likely because it uses a similar stainless steel chassis under the mag alloy shell. Stainless steel is durable and stiff, but not particularly light, yet at this price point it is not a bad way to go to make solid camera. Bearing in mind, Nikon’s full mag alloys start at least hundreds more, and may not be significantly more durable in an age of forced obsolescence.

Size and Feel

I noticed right away that the grip of the K-7 is significantly more dished than the K10/20D and there is a definite finger groove. It seems there is a growing trend and growing public demand to make deeper grips, and for a still camera I’m not sure it’s necessary, but for video this could be a nice feature. Pentax also left the left side textured and dished grip on the camera for people who like to use two hands. I think this is actually pretty useful when using a pancake lens, and again could be useful for video.

While the camera is smaller, it seems to have lost very little real estate for the shooting hand. In some ways it seems less cramped and easier to hold than the K10/20D. This is very contrary to what I would have expected. Holding both the ist D (Pentax previous compact flagship model) and the K-7 in hand it appears they are very similar in size, but the K-7 is much more comfortable to hold with average sized male hands, and doesn’t seem anymore cramped. This is a very impressive feat, and was able to be done largely because Pentax chopped off the control buttons on the left side of the camera and found a home for them in different locations.

I have mixed feelings that the large LCD doesn’t swivel. For video this would be incredibly useful, but not without a cost of durability. There is no doubt that a swiveling LCD is more likely to be damaged, and since the idea that the K-7 was a step up in robust build from the KXX series, this would have been a weak point in design, just as a pop-up flash is generally considered a weak point on a rugged camera.

Key Pentax K-7 Features

  • 14.6MP CMOS sensor (same as the K20D)
  • ISO sensitivity range 100-3200, up to 6400 as a custom function (same as the K20D)
  • 23.4 × 15.6mm CMOS sensor, 1.5x multiplier (the K10D has a 23.5 × 15.7mm CCD-shift type “Shake Reduction” sensor)
  • 100% viewfinder (K20D 95% viewfinder)
  • 11-point AF sensor, 9 cross-type sensors (same as the K20D)
  • ISO sensitivity range 100-3200, up to 6400 as a custom function (100-1600 on the K10D)
  • 5.2 fps continuous capture rate, up to 40 JPEG, 15 RAW, 14 DNG images (3 fps on the K20D, up to 38 JPEG, 14 RAW, 16 DNG images)
  • 21 fps burst mode at 1.6MP (the K10D doesn’t have this feature)
  • 1/8000s fastest shutter speed (K20D is 1/4000s)
  • 3" LCD monitor, 921,000 pixels (2.7" LCD monitor, 230,000 pixels on the K20D)
  • built-in flash (same as the K20D)
  • an electronic level to keep horizons horizontal (K20D doesn’t have this feature)
  • compact, light body: 750g or 26.5oz with battery (K20D is 800g or 28.2oz)
  • HD Video 720p, 30fps (K20D doesn’t have this feature)
  • uses the rechargeable D-LI90 lithium-ion battery (K20D uses the rechargeable D-LI50 lithium-ion battery)

Control Layout Observations and Comparisons

An important thing I’d like to note is something that I was concerned about early on, and is a great lesson on not jumping the gun when initial specs are leaked, or worse, speculated! I quite liked the K10/20D hard doors, some with twist locks and others without. The K-7 loses those doors, which over 2+ years using both a K10D and K20D have never failed me, in favor of the more common rubber press fit plugs. Anyone familiar with these plugs knows they don’t tend to stay put when removed often, and I might open and close my cable release door a dozen times a day, which could be categorized as often. They also tend to break off over time. On my Nikon D1H all the covers are missing, and while the ports are apparently isolated (or internally sealed) it still annoys me that they are gone and the ports are exposed.

Browsing the six-page, 37-function custom menu system, the Pentax K-7 eliminates one of the fears I had. It appears Pentax added a feature I’d been wishing for some time—the IR remote isn’t just a press and fire remote, but it can be set to trigger the shutter to open on the first press, and close on the second while in bulb mode. Coupled with the auto bracket mode and interval timer carried over from the K20D this should eliminate the need to use the cable release port very often. It should now be possible via the menu to shoot almost any scene without the need to use a wired cable release. A distinct advantage of this is no more cable release to dangle and keep track of while the wind is blowing, and no more open port doors for long exposures.

A quick test with my Pentax Wireless Remote C confirms that I may no longer need to use the cable release port, making the whole plug disappointment largely a moot issue.

The control layout is significantly different than previous Pentax cameras. I suppose, having never used the K-m/K2000 that the K-7 menu system shares some similarities with that camera, but the hard button layout is a first. While I appreciate the easy access to the controls, I’m not sure the elimination of the Fn button is entirely good. I’ve already noticed that it is fairly easy to enter the Fn menu accidentally. I’m not certain access to the controls will be vastly faster but time will tell if the annoyance of accidentally accessing features is offset by speed of access when you need it. Also, as another casualty of the missing Fn button, now to change auto focus points in select mode you need to press a button (OK button) each time.

New to this level of Pentax DSLR is an adjustable “live” info menu. In the past, the info button just brought up the current settings, on the K-7 the info button can actually be used to quickly change many settings without menu diving. These include, lens corrections, highlight and shadow corrections, ISO settings, file format and compression, SR, and others.

ISO Button

I’m still a little puzzled by the ISO button. Those having not spent much time with the K10/20D (aka. most reviewers) probably didn’t realize Pentax came up with a brilliant way to maximize button space while offering on the fly ISO adjustment by using the OK button (thumb press) with the shutter speed wheel (index finger scroll). The new system seems nifty although arguably no better, just another equally good way of doing things, and most importantly appeasing the reviewers who have little time to read pesky manuals or find hidden buttons. One interesting feature of the K-7 ISO button is you only need to press it one time, scroll the rear wheel to where you want the ISO to be, and then press either the ISO or shutter or any button on the camera to exit and lock in your setting.

I admit I’m biased on the ISO issue, but I do love that the EV comp button works the same, and there is a reason for this. I don’t find it particularly comfortable for my fingers to reach the buttons to hold them down, for a single press the recessed location seems perfect.

Live View

I’m going to avoid going into the improved Live View functionality in this segment, but the dedicated LV button is appreciated. Digging through the K20D menu to switch between Live View, optical, and digital preview was no picnic. The dedicated LV button allows you to use digital preview to quickly check highlights/histogram, as well as LV for macro focusing without constantly changing settings. I expect Live View to work much better as my main gripes with the K20D were the low res screen, slow AF, and inability to change settings without having to exit Live View. First impressions say all of these are now fixed.

One button array that nags me is the Green Button being so close to the AF button. The feel is distinct enough, unlike the K20D AF and EV comp buttons, that it shouldn’t be a major issue, if an issue at all, but I still am not quite sure why Pentax didn’t isolate the AF button a little better. The Green Button almost seems like an afterthought on what appears out of the box like a pretty well sorted camera.

Lockout Button

Something “new” for the K-7 and the digital line of Pentax DSLRs is the lockout button on the mode wheel. This was present on at least the 645N, and I also believe a 35mm Pentax SLR. It’s too early to comment on the value of this button, I don’t recall there being a problem with the non locked wheel on previous DSLRs but it seems easy enough to work.

Video Mode

The most unmistakable addition is the video mode on the mode dial. Gone is the 21fps burst mode of the K20D which as time passes appears more and more like video mode beta, but now there is a legit video mode with a dedicated hard button function.

Conclusion

Overall, as a creature of habit, having largely used a KXXD setup for almost 2.5 years, it’s too early to tell just how good or bad the external controls are. They seem well sorted and uncramped, and it appears Pentax did a good job with the layout.

Note: This hands-on review covers my first impressions of the Pentax K-7. Accompanying photos/test shots, illustrations, and a full length in-depth review will follow in the next few weeks.

Where to Buy

Photo.net’s partners offer the Pentax K-7, (compare prices). Their prices are fair and you help to support photo.net.

More


Text ©2009 Justin Serpico.

Article revised February 2011.

Readers' Comments


Add a comment



John-Paul Treen , July 10, 2009; 09:50 P.M.

Certainly with you on the old OK+Wheel=ISO shift issue, really neat feature in the K10/20D.

Before you got your hands on one, you were worrying about the new SD card slot and it's door - the 10/20 version will shut when the retainer in the card reader has failed and 'jam' the card in position that keeps the camera working, is that still possible with the K-7?

Miserere Mei , July 10, 2009; 10:50 P.M.

...the IR remote isn’t just a press and fire remote, but it can be set to trigger the shutter to open on the first press, and close on the second while in bulb mode.

Halle-frickin-lujah! About time, Pentax.

I don’t recall there being a problem with the non locked wheel on previous DSLRs but it seems easy enough to work.

Justin, on my K10D I often inadvertently change the shooting mode while the camera is slung over my shoulder and I hit the dial with my forearm as I walk. I like the addition of the lock.

Ryan Watts , July 11, 2009; 02:11 P.M.

About the infrared trigger with bulb mode issue, couldn't that be included in a firmware update for the K20? Seems like a simple bit of reprogramming to me...

Lakhinder Walia , July 15, 2009; 02:14 P.M.

Sadly, removing the doors and putting those rubber plugs is a step in the wrong direction. That is where this camera (i.e K20d and K10d) excelled. And those knobs were really nice to have -- to open the door. Perhaps it was an unappreciated feature, and Pentax decided to remove it.

I am guessing/hoping, Pentax can now come up with a full frame DSLR by the end of this year -- as their data transfer rates have improved.

Neil Fiertel , July 15, 2009; 07:02 P.M.

The choices a camera manufacturer uses to determine the internal body structure is less to do with actual costs than other variables such as how the internal parts are attached to one another and to the frame itself. The cost between stainless and magnesiurm is a non issue. A diecast mag frame is dollars and adding to it machining if needed perhaps doubles the cost but it is still no more than the price of a couple of burgers and that is just the same as a stainless fab. It is all PR to say that one is better than the other except in terms of possible weight savings which might be a bit lighter with the magnesium though part of the savings would be eaten up by the requirement of thicker magnesium structures due to its less tensile strength. The outer casing of the camera no doubt adds much more to the weight of a camera and thus, a poly case is heavier and thicker than a magnesium die cast camera case and thus is found on cheaper camera designs. Both types are accurately die cast and likely neither need a lot of post casting machining. Considering the weight of a lens and the battery, the internal structure is not a deal breaker either way. Temperature stability is more the issue I would suggest in that torsional concerns due to variations in internal temperatures is more a concern as circuit heat could affect alignment and weather can also be of concern to maintaing optical paths perfectly aligned at one ambient temperature but off at another. Metals do better than plastics in this and thus, internal structural elements on good cameras have been made of metals one sort or another.

Bob Hinkelman , July 17, 2009; 12:17 A.M.

I greatly appreciate all the Photo-net equipment reviews. Many thanks.

For still photographers an evaluation of the K-7 in-camera HDR Image Capture mode would be very appreciated.

The K-7 video feature seems a bit over emphasized. That can be done in good quality, yes in HD, on $200 consumer "still" cameras if you don't want to use an actual video camera.

Rick Gerbehy , July 22, 2009; 03:18 P.M.

New battery and new battery grip are on the K-7. I am not sure this price will hold too long. Not worth twice the price of the discontinued K20.

Javier Gutierrez , July 27, 2009; 12:52 A.M.

My first impressions can be found here...So far so good. http://photo.net/pentax-camera-forum/00U1xD

Kastaniotis Dimitris , July 28, 2009; 08:54 A.M.

Rather very fast review of the Camera... All these are nice comments, but won't matter for most people.

The seller points that would justify the double price are the new AF and any improvements on the noise or dynamic range areas. Oh and maybe the quality of the Video.

For the time being, and from things I' ve seen and read, I don t think K7 is worth spending double the money (in comparison to K20).

Itai Danan , July 30, 2009; 02:18 P.M.

There is now a detailed review of the K-7 here: http://www.neocamera.com/review_pentax_k7_more.html

@Bob:

I did not say much about the HDR feature because I did not find it anything to write about. The feature does work but not as well as software alternatives.

Particularly it seems not to do enough about alignment problems, so I could not get any non-fuzzy shot handheld (or even with a flaky tripod).

With a good tripod, it produces an HDR image with a fixed tone curve which for some scenes is OK but often produces rather flat results. One of most difficult thing about HDR in general is that it takes a lot of subtlety to produce something that looks natural.

- Itai


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