Pentax K100D vs Sony A900
64 Imaging
44 Features
36 Overall
40
54 Imaging
65 Features
62 Overall
63
Pentax K100D vs Sony A900 Key Specs
(Full Review)
- 6MP - APS-C Sensor
- 2.5" Fixed Display
- ISO 200 - 3200
- Sensor based Image Stabilization
- No Video
- Pentax KAF Mount
- 660g - 129 x 93 x 70mm
- Revealed December 2006
- Successor is Pentax K100D S
(Full Review)
- 25MP - Full frame Sensor
- 3" Fixed Display
- ISO 100 - 6400
- Sensor based Image Stabilization
- 1/8000s Maximum Shutter
- No Video
- Sony/Minolta Alpha Mount
- 895g - 156 x 117 x 82mm
- Launched October 2008
- Later Model is Sony A99
Meta to Introduce 'AI-Generated' Labels for Media starting next month Pentax K100D vs Sony A900 Overview
Below, we are reviewing the Pentax K100D vs Sony A900, former is a Entry-Level DSLR while the other is a Advanced DSLR by competitors Pentax and Sony. There is a large difference between the image resolutions of the K100D (6MP) and A900 (25MP) and the K100D (APS-C) and A900 (Full frame) feature totally different sensor dimensions.
President Biden pushes bill mandating TikTok sale or banThe K100D was released 22 months before the A900 making the cameras a generation away from each other. Each of these cameras come with different body type with the Pentax K100D being a Compact SLR camera and the Sony A900 being a Mid-size SLR camera.
Before getting in to a in-depth comparison, below is a simple summation of how the K100D scores against the A900 in relation to portability, imaging, features and an overall score.
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Below is a sample of the gallery pictures for Pentax K100D & Sony Alpha DSLR-A900. The complete galleries are provided at Pentax K100D Gallery & Sony A900 Gallery.
Reasons to pick Pentax K100D over the Sony A900
| K100D | A900 |
|---|
Reasons to pick Sony A900 over the Pentax K100D
| A900 | K100D | |||
|---|---|---|---|---|
| Launched | October 2008 |  | December 2006 | More modern by 22 months |
| Display dimension | 3" |  | 2.5" | Larger display (+0.5") |
| Display resolution | 922k |  | 210k | Sharper display (+712k dot) |
Common features in the Pentax K100D and Sony A900
| K100D | A900 | |||
|---|---|---|---|---|
| Manually focus |  | Very exact focusing | ||
| Display type | Fixed |  | Fixed | Fixed display |
| Selfie screen |  | Neither features selfie screen | ||
| Touch friendly display |  | Lack of Touch friendly display |
Pentax K100D vs Sony A900 Physical Comparison
If you are intending to carry around your camera often, you are going to need to factor its weight and proportions. The Pentax K100D enjoys outside dimensions of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") accompanied by a weight of 660 grams (1.46 lbs) while the Sony A900 has measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") along with a weight of 895 grams (1.97 lbs).
Compare the Pentax K100D vs Sony A900 in our brand new Camera & Lens Size Comparison Tool.
Don't forget, the weight of an ILC will differ depending on the lens you select during that time. Underneath is the front view physical size comparison of the K100D and the A900.
Looking at size and weight, the portability rating of the K100D and A900 is 64 and 54 respectively.
Pentax K100D vs Sony A900 Sensor Comparison
Often, it is very tough to see the difference between sensor sizes just by checking specs. The image here will provide you a greater sense of the sensor dimensions in the K100D and A900.
All in all, the 2 cameras posses different megapixel count and different sensor sizes. The K100D because of its tinier sensor will make achieving shallower DOF more difficult and the Sony A900 will give you extra detail as a result of its extra 19 Megapixels. Greater resolution will also allow you to crop pics somewhat more aggressively. The more aged K100D is going to be disadvantaged in sensor tech.
Pentax K100D vs Sony A900 Screen and ViewFinder
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Pentax K100D vs Sony A900 Specifications
| Pentax K100D | Sony Alpha DSLR-A900 | |
|---|---|---|
| General Information | ||
| Manufacturer | Pentax | Sony |
| Model | Pentax K100D | Sony Alpha DSLR-A900 |
| Type | Entry-Level DSLR | Advanced DSLR |
| Revealed | 2006-12-03 | 2008-10-22 |
| Body design | Compact SLR | Mid-size SLR |
| Sensor Information | ||
| Processor | - | Bionz |
| Sensor type | CCD | CMOS |
| Sensor size | APS-C | Full frame |
| Sensor dimensions | 23.5 x 15.7mm | 35.9 x 24mm |
| Sensor surface area | 369.0mm² | 861.6mm² |
| Sensor resolution | 6 megapixel | 25 megapixel |
| Anti aliasing filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Highest Possible resolution | 3008 x 2008 | 6048 x 4032 |
| Maximum native ISO | 3200 | 6400 |
| Min native ISO | 200 | 100 |
| RAW data | ||
| 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 |
| Lens | ||
| Lens mounting type | Pentax KAF | Sony/Minolta Alpha |
| Available lenses | 151 | 143 |
| Crop factor | 1.5 | 1 |
| Screen | ||
| Display type | Fixed Type | Fixed Type |
| Display sizing | 2.5" | 3" |
| Resolution of display | 210k dot | 922k dot |
| Selfie friendly | ||
| Liveview | ||
| Touch friendly | ||
| Display technology | - | TFT Xtra Fine color LCD |
| Viewfinder Information | ||
| Viewfinder | Optical (pentamirror) | Optical (pentaprism) |
| Viewfinder coverage | 96 percent | 100 percent |
| Viewfinder magnification | 0.57x | 0.74x |
| Features | ||
| Min shutter speed | 30s | 30s |
| Max shutter speed | 1/4000s | 1/8000s |
| Continuous shutter speed | 3.0 frames per second | 5.0 frames per second |
| Shutter priority | ||
| Aperture priority | ||
| Manual exposure | ||
| Exposure compensation | Yes | Yes |
| Set WB | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash range | - | no built-in flash |
| Flash modes | Auto, On, Off, Red-eye reduction | Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Fill-in, Wireless |
| External flash | ||
| AE bracketing | ||
| WB bracketing | ||
| Max flash sync | 1/180s | 1/250s |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Maximum video resolution | None | None |
| Mic input | ||
| Headphone input | ||
| Connectivity | ||
| Wireless | None | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | None |
| Physical | ||
| Environment seal | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 660 grams (1.46 lb) | 895 grams (1.97 lb) |
| Dimensions | 129 x 93 x 70mm (5.1" x 3.7" x 2.8") | 156 x 117 x 82mm (6.1" x 4.6" x 3.2") |
| DXO scores | ||
| DXO Overall score | not tested | 79 |
| DXO Color Depth score | not tested | 23.7 |
| DXO Dynamic range score | not tested | 12.3 |
| DXO Low light score | not tested | 1431 |
| Other | ||
| Battery life | - | 880 shots |
| Form of battery | - | Battery Pack |
| Battery model | 4 x AA | NP-FM500H |
| Self timer | Yes (2 or 12 sec) | Yes (2 or 10 sec) |
| Time lapse recording | ||
| Storage media | SD/MMC card | Compact Flash (Type I or II), Memory Stick Duo / Pro Duo, UDMA Mode 5, Supports FAT12 / FAT16 / FAT32 |
| Storage slots | 1 | 2 |
| Cost at release | $0 | $2,736 |