Pentax K-r vs Sony A100
67 Imaging
52 Features
52 Overall
52


64 Imaging
48 Features
38 Overall
44
Pentax K-r vs Sony A100 Key Specs
(Full Review)
- 12MP - APS-C Sensor
- 3" Fixed Display
- ISO 200 - 12800 (Push to 25600)
- Sensor based Image Stabilization
- 1/6000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 598g - 125 x 97 x 68mm
- Launched March 2011
(Full Review)
- 10MP - APS-C Sensor
- 2.5" Fixed Display
- ISO 100 - 1600
- Sensor based Image Stabilization
- No Video
- Sony/Minolta Alpha Mount
- 638g - 133 x 95 x 71mm
- Released July 2006
- Old Model is Konica Minolta 5D
- Replacement is Sony A550

Pentax K-r vs Sony A100 Overview
Lets look closer at the Pentax K-r vs Sony A100, both Entry-Level DSLR cameras by companies Pentax and Sony. The sensor resolution of the K-r (12MP) and the A100 (10MP) is fairly close and they possess the exact same sensor sizes (APS-C).

The K-r was launched 4 years after the A100 which is a fairly large difference as far as camera tech is concerned. Each of these cameras come with the identical body type (Compact SLR).
Before getting in to a comprehensive comparison, below is a brief synopsis of how the K-r matches up versus the A100 in relation to portability, imaging, features and an overall score.

Pentax K-r vs Sony A100 Gallery
The following is a sample of the gallery pictures for Pentax K-r & Sony Alpha DSLR-A100. The complete galleries are provided at Pentax K-r Gallery & Sony A100 Gallery.
Reasons to pick Pentax K-r over the Sony A100
K-r | A100 | |||
---|---|---|---|---|
Released | March 2011 | ![]() | July 2006 | More modern by 57 months |
Display dimension | 3" | ![]() | 2.5" | Larger display (+0.5") |
Display resolution | 921k | ![]() | 230k | Crisper display (+691k dot) |
Reasons to pick Sony A100 over the Pentax K-r
A100 | K-r |
---|
Common features in the Pentax K-r and Sony A100
K-r | A100 | |||
---|---|---|---|---|
Manual focus | ![]() | More precise focusing | ||
Display type | Fixed | ![]() | Fixed | Fixed display |
Selfie screen | ![]() | No selfie screen | ||
Touch display | ![]() | No Touch display |
Pentax K-r vs Sony A100 Physical Comparison
When you are looking to carry around your camera frequently, you will need to think about its weight and dimensions. The Pentax K-r comes with exterior dimensions of 125mm x 97mm x 68mm (4.9" x 3.8" x 2.7") accompanied by a weight of 598 grams (1.32 lbs) and the Sony A100 has dimensions of 133mm x 95mm x 71mm (5.2" x 3.7" x 2.8") and a weight of 638 grams (1.41 lbs).
See the Pentax K-r vs Sony A100 in our completely new Camera plus Lens Size Comparison Tool.
Keep in mind, the weight of an ILC will differ dependant on the lens you are utilising at that time. Underneath is the front view size comparison of the K-r compared to the A100.

Using size and weight, the portability grade of the K-r and A100 is 67 and 64 respectively.

Pentax K-r vs Sony A100 Sensor Comparison
Generally, its difficult to envision the gap in sensor sizes purely by looking through specifications. The picture below will help offer you a far better sense of the sensor sizes in the K-r and A100.
To sum up, the 2 cameras have got the exact same sensor measurements but not the same resolution. You can anticipate the Pentax K-r to render extra detail utilizing its extra 2MP. Greater resolution will also let you crop images much more aggressively. The more recent K-r is going to have an advantage in sensor innovation.

Pentax K-r vs Sony A100 Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Pentax K-r vs Sony A100 Specifications
Pentax K-r | Sony Alpha DSLR-A100 | |
---|---|---|
General Information | ||
Manufacturer | Pentax | Sony |
Model | Pentax K-r | Sony Alpha DSLR-A100 |
Category | Entry-Level DSLR | Entry-Level DSLR |
Launched | 2011-03-11 | 2006-07-31 |
Physical type | Compact SLR | Compact SLR |
Sensor Information | ||
Processor Chip | Prime II | - |
Sensor type | CMOS | CCD |
Sensor size | APS-C | APS-C |
Sensor measurements | 23.6 x 15.8mm | 23.6 x 15.8mm |
Sensor surface area | 372.9mm² | 372.9mm² |
Sensor resolution | 12MP | 10MP |
Anti aliasing filter | ||
Aspect ratio | 3:2 | 3:2 |
Full resolution | 4288 x 2848 | 3872 x 2592 |
Max native ISO | 12800 | 1600 |
Max boosted ISO | 25600 | - |
Min native ISO | 200 | 100 |
RAW format | ||
Min boosted ISO | 100 | - |
Autofocusing | ||
Focus manually | ||
Touch focus | ||
AF continuous | ||
Single AF | ||
Tracking AF | ||
AF selectice | ||
AF center weighted | ||
Multi area AF | ||
Live view AF | ||
Face detect focusing | ||
Contract detect focusing | ||
Phase detect focusing | ||
Number of focus points | 11 | 9 |
Cross focus points | 9 | - |
Lens | ||
Lens mounting type | Pentax KAF2 | Sony/Minolta Alpha |
Total lenses | 151 | 143 |
Crop factor | 1.5 | 1.5 |
Screen | ||
Display type | Fixed Type | Fixed Type |
Display diagonal | 3 inch | 2.5 inch |
Resolution of display | 921k dots | 230k dots |
Selfie friendly | ||
Liveview | ||
Touch screen | ||
Display tech | TFT LCD monitor | - |
Viewfinder Information | ||
Viewfinder | Optical (pentamirror) | Optical (pentamirror) |
Viewfinder coverage | 96 percent | 95 percent |
Viewfinder magnification | 0.57x | 0.55x |
Features | ||
Slowest shutter speed | 30 secs | 30 secs |
Maximum shutter speed | 1/6000 secs | 1/4000 secs |
Continuous shooting rate | 6.0 frames/s | 3.0 frames/s |
Shutter priority | ||
Aperture priority | ||
Manually set exposure | ||
Exposure compensation | Yes | Yes |
Custom WB | ||
Image stabilization | ||
Integrated flash | ||
Flash range | 12.00 m (at ISO 100) | - |
Flash settings | Auto, Red-eye Reduction, Slow-speed Sync, Trailing Curtain Sync, High-Speed Sync and Wireless Sync | Auto, Fill-in, Red-Eye reduction, Slow Sync, Off |
External flash | ||
AE bracketing | ||
WB bracketing | ||
Maximum flash synchronize | 1/180 secs | 1/160 secs |
Exposure | ||
Multisegment metering | ||
Average metering | ||
Spot metering | ||
Partial metering | ||
AF area metering | ||
Center weighted metering | ||
Video features | ||
Video resolutions | 1280 x 720 (25 fps), 640 x 480 (25 fps) | - |
Max video resolution | 1280x720 | None |
Video data format | Motion JPEG | - |
Microphone support | ||
Headphone support | ||
Connectivity | ||
Wireless | None | None |
Bluetooth | ||
NFC | ||
HDMI | ||
USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
GPS | Optional | None |
Physical | ||
Environment sealing | ||
Water proof | ||
Dust proof | ||
Shock proof | ||
Crush proof | ||
Freeze proof | ||
Weight | 598g (1.32 lb) | 638g (1.41 lb) |
Dimensions | 125 x 97 x 68mm (4.9" x 3.8" x 2.7") | 133 x 95 x 71mm (5.2" x 3.7" x 2.8") |
DXO scores | ||
DXO All around score | 72 | 61 |
DXO Color Depth score | 22.9 | 22.0 |
DXO Dynamic range score | 12.4 | 11.2 |
DXO Low light score | 755 | 476 |
Other | ||
Battery life | 470 images | - |
Style of battery | Battery Pack | - |
Battery model | D-LI109,4 x AA | NP-FM55H |
Self timer | Yes (2 or 12 sec) | Yes (2 or 10 sec) |
Time lapse shooting | ||
Type of storage | SD/SDHC | Compact Flash (Type I or II) |
Card slots | 1 | 1 |
Retail pricing | $1,100 | $1,000 |