Sony RX100 II vs Pentax K-3 II

Cameras
Compare Cameras
Sony RX100 II vs Pentax K-3 II

Leave Feedback

1 inch 116.2mm²
20.2 megapixels
28.00mm - 100.00mm (35mm eq.)

Go in depth with our full Sony RX100 II Review.
How does it shoot? Sony RX100 II in the real world.
See real-world photos taken with the RX100 II.
Compare Sony RX100 II image quality against competitors.
What’s the bottom line? Read our Sony RX100 II conclusion.

APS-C 366.6mm²
24.4 megapixels
ISO 100 - 51,200

Go in depth with our full Pentax K-3 II Review.
How does it shoot? Pentax K-3 II in the real world.
See real-world photos taken with the K-3 II.
Compare Pentax K-3 II image quality against competitors.
What’s the bottom line? Read our Pentax K-3 II conclusion.

Succeeded by the Sony RX100 III
Compare RX100 II vs RX100 III

Succeeded by the Pentax K-3 III
Compare K-3 II vs K-3 III

Compare SONY RX100 III vs PENTAX K-3 III

Buy From

Differences

Sony RX100 II advantages over Pentax K-3 II

Less expensive
$598 vs $830
Save money for lenses or accessories
In-camera panoramas
Yes vs No
Stitches multiple shots into a panoramic photo
Tiltable Screen
Tiltable vs Fixed
Tilt the screen for shooting flexbility
Built-in Wi-Fi
Wi-Fi vs None
Share your photos wirelessly
NFC
Yes vs No
Simplifies pairing your camera with supported phones
Internal flash
Internal flash vs None
Useful in a pinch for fill flash
Thinner
38 mm vs 77 mm
Thinner
Higher max flash sync
1/2000 vs 1/180 sec
Reduce the effect of ambient light in flash shots
Lighter weight
281g vs 785g
Lighter weight
Faster JPEG shooting
9.6 fps vs 8.1 fps
Faster JPEG shooting (burst mode)

Pentax K-3 II advantages over Sony RX100 II

Larger sensor
APS-C vs 1 inch
More sensor area. Bigger is (generally) better.
Eye-level viewfinder
Eye-level vs Rear display only
You'll be able to frame photos even when the sun is out
Bigger pixels
~ 3.91 vs 2.41 microns
Better low-light and dynamic range (all else equal)
High resolution composite
Yes vs No
Combine multiple shots to form a super hi-res version
Fast startup
~1.20 vs 2.8 sec
Faster startup lets you catch the moment
Higher effective ISO

Higher effective ISO

Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.

Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.

You can learn more at our glossary entry.

Maximum effective ISO test data courtesy of DxO Mark.
K-3 II test data on DxO Mark RX100 II test data on DxO Mark

1,106 vs 483 iso
Take photos in low light with less noise
Built-in GPS
GPS vs None
Geotag your photos
Longer stills battery life
More info

Longer stills battery life

Cameras with longer battery life can take more photos before exhausting their batteries.

Special note: The measurement standard for battery life stipulates that if a camera has an internal flash, it must be used for 50% of photos taken. For this reason, comparisons of one camera with an internal flash to another without will not be comparable

720 vs 350 shots
Capture more photos
Top deck display
Yes vs No
Check settings with a screen on top of the camera
External Mic Jack
Jack vs No jack
Improved sound fidelity when shooting video
More pixels
24.4 vs 20.2 megapixels
Higher resolution photos
Dual card slots
Yes vs No
Gives you more storage flexibility
Headphone jack
Yes vs No
Monitor audio recording while you shoot video
Optional anti-aliasing filter
Optional vs Fixed
Lets you choose sharper photos or reduced moiré
Bigger JPEG buffer
60 vs 13 shots
Take more JPEG shots before waiting (burst mode)
Faster RAW shooting
8.2 fps vs 4.9 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
22 vs 13 shots
Larger buffer for RAW shots (burst mode)
Faster shutter
1/8000 vs 1/2000 sec
Shoot wide open in bright light
Higher extended ISO
51200 vs 25600 ISO
Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

Rear display
Both provide
Review photos on the back of the camera
Focus peaking
Both provide
Your camera will highlight what's in focus
In-Camera Image Stabilization
Both provide
Reduces the effects of camera shake at slower shutter speeds
RAW file ability
Both provide
Gives you more flexibility to develop your photos later
Manual focus
Both provide
AF is for the weak. Real photographers focus manually.
HDMI out
Both provide
Use HDMI output to monitor or review video
Hot shoe
Both provide
Off-camera flashes open new possibilities
Bulb shutter
Both provide
Hold the shutter open manually for long exposures

Common Weaknesses

Tilt-swivel screen
Neither provide
Tilt and swivel the screen for maximum shooting flexibility
Touchscreen
Neither provide
Interact with your camera just like your smartphone
Built-in Bluetooth
Neither provide
Always-on wireless connectivity
On-sensor phase detect
Neither provide
Usually improves live view and video AF performance
Integrated ND filter
Neither provide
Shoot in daylight with a large aperture or slow shutter
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

Amazon
Adorama
Read K-3 II User Reviews

Buy From

Your purchases support this site

Buy the Sony RX100 II

Sony RX100M II

All RX100 II Deals

Your purchases support this site

Buy the Pentax K-3 II

Body Only (Black)

All K-3 II Deals

Review Excerpt

New, 20.2MP, 1-inch type, backside illuminated (BSI) image sensor produces superb image quality, with particular improvements in low light and high ISO; 3-inch tilting rear LCD screen handy for composing shots from difficult angles; Fast all-around performer with quick autofocus and virtually no shutter lag; New, multi-interface hotshoe for adding a strobe or optional electronic viewfinder; Built-in Wi-Fi with NFC.
Bigger and heavier than previous model; More expensive than previous model; Reduced burst performance when shooting RAW files; Somewhat confusing menu structure and control layout; Wi-Fi features can be difficult to set up.
Read our Sony RX100 II Review

Top-notch image quality; Spectacular detail from Pixel Shift Resolution; Better performance than K-3; Geotag images with no accessories; Great ergonomics in a compact body; Clever on-demand low-pass filtering; Broad sensitivity range; Large and bright viewfinder for an APS-C camera; Dual card slots
No built-in flash strobe; No wireless flash support out of the box; AstroTracer function can be finicky; AE Lock button is poorly located; Below-average battery life for a prosumer DSLR; Requires a different battery grip accessory than its predecessors
Read our Pentax K-3 II Review

The Competition

Compared to Sony RX100

Sony RX100 II

Sony RX100

$598
1 inch

Tiltable Screen
Built-in Wi-Fi

$1074
1 inch

Faster RAW shooting

Compare Sony RX100 II vs Sony RX100

Pentax K-3 II

Sony RX100

$830
APS-C

Larger sensor
Eye-level viewfinder

$1074
1 inch

In-camera panoramas
Internal flash

Compare Pentax K-3 II vs Sony RX100

Compared to Sony RX100 III

Sony RX100 II

Sony RX100 III

$598
1 inch

Less expensive
More telephoto lens reach

$748
1 inch

Eye-level viewfinder
Fast startup

Compare Sony RX100 II vs Sony RX100 III

Pentax K-3 II

Sony RX100 III

$830
APS-C

Larger sensor
Bigger pixels

$748
1 inch

In-camera panoramas
Tiltable Screen

Compare Pentax K-3 II vs Sony RX100 III

Compared to Canon T6i

Sony RX100 II

Canon T6i

$598
1 inch

Focus peaking
In-Camera Image Stabilization

$699
APS-C

Tilt-swivel screen
Larger sensor

Compare Sony RX100 II vs Canon T6i

Pentax K-3 II

Canon T6i

$830
APS-C

Focus peaking
Larger sensor

$699
APS-C

Less expensive
Tilt-swivel screen

Compare Pentax K-3 II vs Canon T6i

Compared to Sony RX100 IV

Sony RX100 II

Sony RX100 IV

$598
1 inch

More telephoto lens reach
Longer stills battery life

$898
1 inch

Eye-level viewfinder
Shoot 4K video

Compare Sony RX100 II vs Sony RX100 IV

Pentax K-3 II

Sony RX100 IV

$830
APS-C

Larger sensor
Bigger pixels

$898
1 inch

Shoot 4K video
In-camera panoramas

Compare Pentax K-3 II vs Sony RX100 IV

Compared to Pentax KP

Sony RX100 II

Pentax KP

$598
1 inch

Less expensive
In-camera panoramas

$999
APS-C

Larger sensor
Eye-level viewfinder

Compare Sony RX100 II vs Pentax KP

Pentax K-3 II

Pentax KP

$830
APS-C

Less expensive
Built-in GPS

$999
APS-C

Tiltable Screen
Built-in Wi-Fi

Compare Pentax K-3 II vs Pentax KP

Compare Other Cameras?