Features & Controls
Here you can see a beter illustration of the seals that Pentax implemented on this camera and it's accessory battery grip.
CMOS Image SensorWhile the K-7 uses the same 14.6-megapixel CMOS image sensor we saw on the K20D, Pentax claims they have redesigned this unit to offer "improved noise control, four channel output for faster image capture and movie capture capabilities". Measuring 23.4 mm x 15.6 mm this APS-C size sensor offers a color depth of 8 bits per channel for JPEG images or 12 bits for RAW files. You have four JPEG quality settings to choose from (Premium, Best, Better, Good) as well as several video resolution options (1280x720, 1536x1024, 40x480). This is sensor is also highly sensitive to light, with ISO capabilities ranging from 100-6400 (6400 with expanded range enabled.)
Like past Pentax models, the K-7 offers their effective Shake and Dust reduction systems. The SR (Shake Reduction) uses a sensor-shift method to help you capture sharper hand-held shots at up to 4 stops slower than typically possible with no IS system in place. Dust removal is accomplished by using supersonic vibrations to the low pass fiter to dislodge dust and other debris from the sensor assembly.
11-Point TTL AF System
The K-7 also continues the use of their 11-point (9 cross type) autofocus system. In automatic operation (AUTO) the camera recognizes which object is nearest and chooses that object as the main focus point. For more direct control, select any of the 11 points individually. It is also possible to simply select the center of the image as your main point of focus. With Continuous Autofocus, the focus points adjust as your subject moves within the frame, or should you prefer more direct control, you may always focus manually.
PENTAX Lens Mount
Here you can see the K-7's Pentax bayonet (KAF2) stainless steel lens mount. The K-7 is compatible with all KAF3, KAF2, KAF, and KA mount lenses offered by Pentax and other lens manufactures. The K-7 has an electronically controlled, vertical run, focal plane shutter offering shutter speeds from 1/8000 to 30 seconds with a Bulb setting available.
Built in Pop-up FlashThe built-in, manual pop-up flash unit is easy to operate, just press the release button (the lightening bolt) when you need some extra illumination. It has a Guide number of 13 (100/m) with an approximate 28mm wide angle (equivalent to 35mm) coverage . Flash modes available are On, Redeye, Slow sync, Slow sync + Redeye, trailing curtain sync and Wireless. Flash exposure compensation is 2 to +1 EV in 1/2 steps.
The Hotshoe (seen in the below photo) allows you to use various external flash units with the K-7. Depending on the model being used, the K-7 can utilize several flash mode options, including P-TTL auto flash, wireless flash, and high-speed or slow-speed sync. The X-sync socket is located just below the Flash release button; synchronization speed equals 1/180 of a second.
ViewfinderThe K-7 offers an improved pentaprism type viewfinder, which offers 100% frame coverage or field of view (compared to about 95% on past models), 0.92x magnification, DOF review and diopter adjustment of -2.5 to 1.5. It utilizes Pentax's new Natural-Bright-Matte III focusing screen, along with their comfortable FR eyecup. Pentax also offers optional focusing screens, and the O-ME53 magnified eyecup, etc.
Viewfinder information includes: AF frame/Spot metering frame, AF point, Flash status, Manual focus, Shutter speed, Aperture, Focus indicator, EV bar, ISO/ISO AUTO, Sensitivity, AE Lock, Move AF point, Multi-exposure, Metering Method, Shake Reduction, Flash Exposure Compensation, EV Compensation/Exposure Bracketing, and File Format.
Exposure MeteringThe K-7 boasts a TTL (open-aperture) 77-segment multi-pattern metering system, with a sensitivity range of EV 0-21 (ISO 100, 50mm f/1.4). You can choose from Multi-segment, Center weighted and Spot metering. Other options include Exposure compensation (± 5EV in 1/2 or 1/3 EV steps), Exposure lock, and Exposure bracketing (3 or 5 frames, up to ±2EV in 1/2 or 1/3 steps).
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