It appears none of the established manufacturers can afford to launch a DSLR without video capability these days and consequently the K-x is, after the K-7, the second Pentax DSLR to come with a HD video mode.
Pretty much like all currently available video-enabled DSLRs the K-x does not offer the fast AF or the same degree of control over video capture as a dedicated camcorder. However, the ability to shoot movies with a large sensor and therefore a cinema-like, shallow depth of field, and interchangeable lenses will be an attractive option for most photographers with an interest in videography.
Unlike the K-7 which features a rather unusual 1536 x 1024 pixels (3:2) aspect ratio the K-x comes with a more standard 1280 x 720 pixels (720p) at 24 fps video mode. There is also a 640 x 416 pixels mode. Movie files are saved in the high quality, but very large, Motion JPEG format. Resolution and frame rate aside the K-x's movie features are pretty basic. There is no connector for an external stereo microphone, no wind-cut function and no manual controls (you can fix the aperture before recording though).
|Sizes|| 1280 x 720 (720p) at 24 fps
640 x 416 (VGA) at 24 fps
|Audio||Mono (Internal Mic)|
|File size||5.8 MB/sec (720p), 1.7 MB/sec (VGA)|
|Max file size per clip||4.0 GB|
|Running time||25 min or until SD card is full|
Using Movie Mode
Shooting a video on the K-x is very similar to the K-7 and a straightforward affair. Turn the mode dial to movie mode and press the shutter button to start recording; press again to stop. Once the camera is recording it is doing everything fully automatically and does not react to a press of any button other than the shutter button. AF is not available while recording video, therefore manual focus or pre-focusing by pressing the AF-button before you start recording are the only options. This is not a major disadvantage given that the video-mode AF on all current video-enabled DSLRs is so painfully slow that it is virtually unusable (the mirrorless Panasonic GF1 shows how it should be done). It also means that there are no AF-motor sounds to be recorded by the internal microphone as happens on other cameras.
Aperture, shutter speed and sensitivity are all set automatically. You can however choose to fix the aperture before you start the video capture which gives you a degree of control over depth of field in your videos. In Auto Aperture mode the K-x will adjust the aperture if the brightness of the recorded scene changes. In Fixed Aperture mode the camera achieves the same goal by only adapting the sensor sensitivity.
Unlike some other recent video-enabled DSLRs the K-x does not allow you to take any still images during video recording, you'll have to turn the mode dial to one of the still modes in order to take a picture. You can't change the amount of on-screen information during video capture either. The camera's internal microphone records monaural sound. There is no connector for an external microphone. The optical image stabilization is activated by default but can be switched off.
Movie mode displays
|Movie menu showing the two available video resolutions. Shake reduction can be turned on or off.||Aperture control can be set to either Auto or Fixed.|
|Once recording has started the record icon and remaining time are displayed at the bottom of the frame. During recording the camera does not react to any button presses apart from the shutter button which will stop recording.|
Video quality comments
The K-x's video footage is not quite as detailed as the 1080p output of some of the higher-priced competitors but certainly in-line with other 720p video-DSLRs. It produces good quality HD footage with fairly smooth motion (although you'll need a fairly powerful computer to play the files smoothly). The K-x's sensor is APS-C size and therefore you can't quite create the same depth of field effects as on a full-frame-camera such as the Canon EOS 5D Mark II but you still get a much shallower, more cinematic depth of field than with any digital compact camera. When recording video more or less all functions are automated (you can fix the aperture though) and inevitably the use of higher sensitivities in low light leads to grainy footage. However, the K-x is not noticeably worse in this respect than the competition and, due to the comparatively small size of the video output, the image noise is less intrusive.
Like pretty much all other video-DSLRs the K-x suffers from distortion caused by its rolling shutter. The readout of the sensor means horizontal lines of the image are scanned, one after another, rather than the whole scene being grabbed in one go. The upshot is that verticals can be skewed if the camera (or the subject) moves too fast - the top of the image has been recorded earlier than the bottom, so vertical lines can be rendered as diagonals. The K-x is pretty average in this respect. The effect is clearly noticeable but you have to pan fairly quickly to make it too intrusive.
When changing the framing from dark to bright scenes or vice versa the exposure adaption via change of aperture and/or gain is comparatively smooth. Below you'll find some examples of videos taken with the K-x for you to download and draw your own conclusions.
Sample video 1
|, 24 fps. AVI (MJPG) file. 15 sec. 78.1 MB|
Sample video 2
|, 24 fps. AVI (MJPG) file. 6 sec. 30.5 MB|
Sample video 3
|, 24 fps. AVI (MJPG) file. 6 sec. 30.9 MB|
Sample video 4
|, 24 fps. AVI (MJPG) file. 7 sec. 38.1 MB|
Sample video 5
|, 24 fps. AVI (MJPG) file. 7 sec. 34.9 MB|
Sample video 6
|, 24 fps. AVI (MJPG) file. 6 sec. 29.4 MB|
Sample video 7
|, 24 fps. AVI (MJPG) file. 6 sec. 31.5 MB|
- 16 Photographic tests (Noise)
- 17 Photographic tests (DR)
- 18 Photographic tests
- 19 In-camera effects
- 20 Movie Mode
- 21 Compared to
- 22 Compared to (JPEG)
- 23 Compared to (JPEG)
- 24 Compared to (RAW)
- 25 Compared to (RAW)
- 26 Compared to (Higher ISO)
- 27 Compared to (Resolution)
- 28 Compared to (Resolution)
- 29 Conclusion
- 30 Samples
Jan 17, 2011
Dec 23, 2009
Sep 17, 2009
Dec 21, 2012
|Smile by Olymguy|
from Ultra Asian Indian Female Faces
|Space Shuttle Cockpit- by vbuhay|
from Aircraft Control Stick
Noctilucent clouds, a crescent moon and Venus were visible in the pre-dawn sky over Budapest yesterday. Photographer György Soponyai captured NASA's astronomy picture of the day.
Squirming pets won't sit still for photos? A Kickstarter campaign is looking to help.
Find out how Chris Burkard shifted from editorial photography to his true passions: landscapes, conservation and, of course, surfing.
The updated EyeEm app scans your camera roll and picks images that are composed particularly well, have the best quality, or highest chance of selling on EyeEm Market.
It's three years old but still a solid option for a Micro Four Thirds shooter looking for a high-quality, fast, wide-angle prime. Take a look at how we got along with it.
Tamron has announced the longest all-in-one zoom lens currently available, the 18-400mm F3.5-6.3 Di II VC HLD. Designed for Canon and Nikon crop-sensor cameras, the lens will be available in July.
When you're ready to step-up to full-frame from an entry-level or midrange camera, the choices can be overwhelming. Find out which models came out on top in our $1200-2000 enthusiast ILC roundup.
Just a guy wearing a VR headset, smashing invisible Goombas in Central Park.
NASA's Mars Reconnaissance Orbiter captured this gorgeous aerial photo of the Martian landscape. And if you look really close, you can actually see the Mars Curiosity rover in the very middle.
The city of Laguna Beach, California has provided some clarification around the kinds of photography permits it offers.
Later this year, a VR180 camera will be Joining Yi's Halo and 360 VR cameras, which will offer stereo 3D capture, yet be as easy to use and compact as a 2D camera.
Caltech researchers have developed an 'optical phased array' chip that uses time delays instead of a lens to focus the incoming light.
Pricing and shipping have finally been revealed for two highly anticipated lenses from Sigma, announced in February.
These macro photos of clouds of paint billowing through clear water might look like high-quality CGI, but they're real photographs. And photographer Alberto Seveso told us how they were made.
Facebook is testing a feature that prevents people from saving, sharing, or even taking a screenshot of your profile picture.
We've reshot the Sony a9 in our studio. The short story: it's sharper! The long story... well you can read it all here.
The collection will be officially launched during the Europeana Transcribathon Campus Berlin 2017 crowdsourcing event which will be held on 22 and 23 June at the Berlin State Library.
Light gives us some insight into the preparations for the launch of the pre-order shipments of its much anticipated L16 multi-lens camera.
OnePlus co-founder Carl Pei has confirmed in a tweet that the second lens on the back of the OnePlus 5 uses a 1.6x optical zoom and that digital zoom is used to reach the claimed 2x zoom factor.
Fujifilm recently unveiled the second in its series of affordable cine lenses, the MK50-135mm T2.9. We got our hands on it for a couple days and took it for a spin.
Leica's first attempt at an M-series digital rangefinder was rough around the edges, but set a pattern for all of the cameras that came after it. In this week's Throwback Thursday article, Barney remembers the M8.
No stranger to extreme situations, legendary climber and filmmaker Jimmy Chin talks to Outside Magazine about his career, and the challenge of filming Alex Honnold's rope-free solo climb of El Capitain.
A company backed by Android co-founder Andy Rubin is attempting to make video conferencing less terrible.
Rangefinder magazine asked five professional portrait and wedding photographers about posting on Instagram; no surprise, they got five different answers.
This captivating stop motion film was created by stripping away one layer of wood at a time. It's hard to look away.
It will enable users to simulate the presence of the sun, moon and Milky Way and see how they interact with an area's topography.
Since its introduction in November last year Instagram's live streaming feature has been used by millions, but videos could not be archived for watching at a later stage. A new update has now added the capability.
CopyTrack's study also found that the second most-stolen image is a woman wearing painted jeans. That's apparently a thing.
Forget expensive lenses with fancy coatings and special lens elements – photographer Robin de Puy took these portraits using just a water drop for a lens.
Adobe reports a record quarterly revenue of $1.77 billion for the second quarter fiscal year 2017 ended June 2, 2017.