Pentax K-S1

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Pentax K-S1
Maker Ricoh
Image sensor type CMOS
Image sensor size 23.5 x 15.6 mm (APS-C type)
Recording medium SD, SDHC or SDXC memory card
Maximum resolution 5472 x 3848 (20 megapixels)
Shutter speeds 1/6000s to 30s
Focus areas 11 focus points
Continuous shooting 5 frames per second
Magnification 0.95
Frame coverage 100%
ASA/ISO range 100-51200
Custom WB Yes
Rear LCD monitor 3 inches with 921,000 dots
Battery D-LI109
Dimensions 121 x 93 x 70 mm (4.76 x 3.66 x 2.76 inches)
Weight 558g including battery
Image processor Prime MII

The Pentax K-S1 is a mid-sized DSLR camera announced by Ricoh on August 27, 2014. It features a 20 megapixel sensor - new to Pentax' line-up - and an anti-aliasing filter simulator as previously seen in the Pentax K-3.

Also adopted from the K-3 is compatibility with the Pentax FluCard, which allows wireless tethered shooting and wireless download of images from the camera.

In other respects, the K-S1 inherits a fair amount from the K-30/K-50 lineage, such as the compact, 100% coverage viewfinder, 1/6000s shutter and D-LI109 battery. A stereo microphone is also built in, to complement the FullHD video capability (30 frames per second (30p)).

It has been noted that the K-S1 is insignificantly larger than the Canon EOS 100D,[1] which as of August 2014 is still the smallest DSLR in production.