Pentax K-S1

Released August, 2014
  • 21.1 MP
  • APS-C 23.7 x 15.7 mm CMOS
  • 3" LCD
If you open the raw format DNG files, you'll see that there's a lot more noise when examined at 100% compared with the JPEG images, demonstrating how much smoothing goes on with the JPEGs.
by TechRadar (Dec, 2014)
8.5 Out of 10

Camera Rocket Review Our evaluation of the Pentax K-S1

Image Quality

RAW image quality independent of lens

Pentax K-S1
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range


How fast and easily does the camera nail focus

Pentax K-S1
focus points


How much delay is there between you and your photo?

Pentax K-S1
continuous shooting


What do the experts think?

Pentax K-S1
Reviews from


Camera Rocket Score

Image Quality, Focusing, Responsiveness and Reviews

Pentax K-S1

Benchmarks Real world tests of the Pentax K-S1

Low light image quality Highest ISO setting that still achieves great image quality

Pentax K-S1
1,061 ISO
EOS 650D
722 ISO
Alpha A6000
1,347 ISO

Resolution Results from photos of standard resolution charts

Pentax K-S1
3,000 LPH
K-5 IIs
2,100 LPH
Fujifilm X-E1
2,300 LPH

Shutter lag Delay to take a photo when prefocused

Pentax K-S1
120 ms
Alpha A6000
22 ms

Continuous shooting Delay between fully pressing shutter to image capture

Pentax K-S1
5.4 fps
Alpha A6000
11 fps
Samsung NX30
9 fps

Battery life How many photos per battery charge (CIPA)

Pentax K-S1
480 photos
K-5 IIs
980 photos
Fujifilm X-E1
350 photos

Color depth The number of variations of color the camera can capture

Pentax K-S1
23.5 bits
EOS 650D
21.7 bits
EOS 100D
21.8 bits

Photo Gallery Wallpaper quality closeups of the camera

In The News From around the web


Pentax K-S1 review

by Amy Davies |
The automatic white balance system does a pretty good job in the most conditions, providing accurate colours directly from the camera.
It errs ever so slightly towards yellow or orange tones under artificial lighting, but if you're finding this to be a problem you can switch to a more appropriate white balance preset.
When taking photos the camera's lights will turn green, and shooting video will cause the camera to glow red.
While most street photographers would cover up lights on their camera, the Pentax K-S1 features a string of green LEDs along its boxy grip as well as an illuminated ring around the shutter button.

Specifications Full list of technical specs


Megapixels 21.1 MP
Resolution 5472 x 3848
Size APS-C
Area 23.7 x 15.7 mm
Crop factor 1.5x
Pixel size 17.7 microns
Light sensitivity 100 ISO to 51,200 ISO
Light sensitivity (Boost) None
  1. RAW
  2. JPEG
Self cleaning sensor Yes
Tested vertical resolution 3,000 LPH
Tested horizontal resolution 3,000 LPH

focus system

Type Phase detection
Focus points 11
Cross type focus points 9
Supports continuous No


Min 30 s
Max 1/6000 s

form factor

Size 121 x 93 x 70 mm
Thickness 70 mm
Weight 558 g
Is weather sealed No


Is a smart camera No
Includes a GPS Yes
Supports HDR Yes
WiFi Yes
Automatic panorama No
Create realistic 3D images No
Image stabilization Sensor shift


Video 1920 x 1080 @ 30 fps
Shoots video in 24p Yes
Shoots high speed video No
External mic jack None
Autofocus while shooting video Contrast detection
Autofocus type Contrast detection
Autofocus supports continuous Yes


Type LCD
Size 3"
Resolution 921 k dots
Has a touch screen No
Has a flip out screen No
Supports live view Yes


Viewfinder mirror None
Viewfinder Viewfinder
Type Pentaprism
Coverage 100%
Magnification 0.95x
Viewfinder size 0.63x


Max continuous shooting 5.4 fps
Battery life 480 photos
Continuous shooting 5.4 fps
Shutter lag 120 ms
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