Pentax 645D vs Sony A100
50 Imaging
74 Features
52 Overall
65
64 Imaging
47 Features
38 Overall
43
Pentax 645D vs Sony A100 Key Specs
(Full Review)
- 40MP - Medium format Sensor
- 3" Fixed Screen
- ISO 200 - 1600
- No Anti-Alias Filter
- No Video
- Pentax 645AF2 Mount
- 1480g - 156 x 117 x 119mm
- Announced March 2010
- Replacement is Pentax 645Z
(Full Review)
- 10MP - APS-C Sensor
- 2.5" Fixed Screen
- ISO 100 - 1600
- Sensor based Image Stabilization
- No Video
- Sony/Minolta Alpha Mount
- 638g - 133 x 95 x 71mm
- Announced July 2006
- Older Model is Konica Minolta 5D
- New Model is Sony A550
Snapchat Adds Watermarks to AI-Created Images Pentax 645D vs Sony A100 Overview
On this page, we will be contrasting the Pentax 645D vs Sony A100, former being a Pro DSLR while the latter is a Entry-Level DSLR by companies Pentax and Sony. There is a considerable difference among the sensor resolutions of the 645D (40MP) and A100 (10MP) and the 645D (Medium format) and A100 (APS-C) posses totally different sensor dimensions.
Pentax 17 Pre-Orders Outperform Expectations by a LandslideThe 645D was announced 3 years later than the A100 and that is a fairly large difference as far as camera tech is concerned. The two cameras have different body design with the Pentax 645D being a Large SLR camera and the Sony A100 being a Compact SLR camera.
Before we go into a step-by-step comparison, here is a concise summary of how the 645D scores vs the A100 in regards to portability, imaging, features and an overall rating.
President Biden pushes bill mandating TikTok sale or ban Pentax 645D vs Sony A100 Gallery
Following is a preview of the gallery photos for Pentax 645D & Sony Alpha DSLR-A100. The whole galleries are available at Pentax 645D Gallery & Sony A100 Gallery.
Reasons to pick Pentax 645D over the Sony A100
| 645D | A100 | |||
|---|---|---|---|---|
| Announced | March 2010 |  | July 2006 | Fresher by 44 months |
| Screen dimensions | 3" |  | 2.5" | Bigger screen (+0.5") |
| Screen resolution | 921k |  | 230k | Sharper screen (+691k dot) |
Reasons to pick Sony A100 over the Pentax 645D
| A100 | 645D |
|---|
Common features in the Pentax 645D and Sony A100
| 645D | A100 | |||
|---|---|---|---|---|
| Manually focus |  | Very precise focus | ||
| Screen type | Fixed |  | Fixed | Fixed screen |
| Selfie screen |  | Neither includes selfie screen | ||
| Touch screen |  | Absent Touch screen |
Pentax 645D vs Sony A100 Physical Comparison
If you're planning to carry your camera regularly, you are going to need to consider its weight and measurements. The Pentax 645D features physical measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs) and the Sony A100 has proportions of 133mm x 95mm x 71mm (5.2" x 3.7" x 2.8") having a weight of 638 grams (1.41 lbs).
Compare the Pentax 645D vs Sony A100 in our newest Camera & Lens Size Comparison Tool.
Remember, the weight of an ILC will vary dependant on the lens you select at that time. The following is a front view dimension comparison of the 645D versus the A100.
Looking at size and weight, the portability score of the 645D and A100 is 50 and 64 respectively.
Pentax 645D vs Sony A100 Sensor Comparison
In many cases, its difficult to envision the difference in sensor sizing just by seeing specifications. The photograph below will offer you a clearer sense of the sensor sizing in the 645D and A100.
To sum up, both of these cameras provide different resolutions and different sensor sizing. The 645D with its bigger sensor will make achieving bokeh simpler and the Pentax 645D will show greater detail with its extra 30 Megapixels. Higher resolution will help you crop photographs more aggressively. The more modern 645D is going to have an edge when it comes to sensor innovation.
Pentax 645D vs Sony A100 Screen and ViewFinder
Samsung Releases Faster Versions of EVO MicroSD Cards Photography Type Scores
Portrait Comparison
Photobucket discusses licensing 13 billion images with AI firmsStreet Comparison
Mastering Nature Photography with a Digital Microscope CameraSports Comparison
Meta to Introduce 'AI-Generated' Labels for Media starting next monthTravel Comparison
Apple Innovates by Creating Next-Level Optical Stabilization for iPhoneLandscape Comparison
Japan-exclusive Leica Leitz Phone 3 features big sensor and new modesVlogging Comparison
Photography Glossary
Pentax 645D vs Sony A100 Specifications
| Pentax 645D | Sony Alpha DSLR-A100 | |
|---|---|---|
| General Information | ||
| Manufacturer | Pentax | Sony |
| Model type | Pentax 645D | Sony Alpha DSLR-A100 |
| Type | Pro DSLR | Entry-Level DSLR |
| Announced | 2010-03-10 | 2006-07-31 |
| Physical type | Large SLR | Compact SLR |
| Sensor Information | ||
| Powered by | Prime II | - |
| Sensor type | CCD | CCD |
| Sensor size | Medium format | APS-C |
| Sensor measurements | 44 x 33mm | 23.6 x 15.8mm |
| Sensor area | 1,452.0mm² | 372.9mm² |
| Sensor resolution | 40 megapixel | 10 megapixel |
| Anti alias filter | ||
| Aspect ratio | 4:3 | 3:2 |
| Maximum resolution | 7264 x 5440 | 3872 x 2592 |
| Maximum native ISO | 1600 | 1600 |
| Lowest native ISO | 200 | 100 |
| RAW pictures | ||
| Lowest boosted ISO | 100 | - |
| Autofocusing | ||
| Focus manually | ||
| Touch focus | ||
| Autofocus continuous | ||
| Autofocus single | ||
| Autofocus tracking | ||
| Autofocus selectice | ||
| Autofocus center weighted | ||
| Multi area autofocus | ||
| Live view autofocus | ||
| Face detection autofocus | ||
| Contract detection autofocus | ||
| Phase detection autofocus | ||
| Total focus points | 11 | 9 |
| Lens | ||
| Lens mount type | Pentax 645AF2 | Sony/Minolta Alpha |
| Number of lenses | 6 | 143 |
| Crop factor | 0.8 | 1.5 |
| Screen | ||
| Type of screen | Fixed Type | Fixed Type |
| Screen diagonal | 3 inch | 2.5 inch |
| Resolution of screen | 921k dots | 230k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch functionality | ||
| Screen tech | TFT Color LCD with wide-viewing angle and with AR coating | - |
| Viewfinder Information | ||
| Viewfinder | Optical (pentaprism) | Optical (pentamirror) |
| Viewfinder coverage | 98 percent | 95 percent |
| Viewfinder magnification | 0.85x | 0.55x |
| Features | ||
| Slowest shutter speed | 30 secs | 30 secs |
| Maximum shutter speed | 1/4000 secs | 1/4000 secs |
| Continuous shooting rate | 1.0 frames per second | 3.0 frames per second |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Set white balance | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | no built-in flash | - |
| Flash options | Auto, On, Off, Red-eye, Slow Sync, Rear Curtain | Auto, Fill-in, Red-Eye reduction, Slow Sync, Off |
| Hot shoe | ||
| AE bracketing | ||
| WB bracketing | ||
| Maximum flash synchronize | 1/125 secs | 1/160 secs |
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| Video features | ||
| Maximum video resolution | None | None |
| 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 | None | None |
| Physical | ||
| Environment sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 1480 gr (3.26 lb) | 638 gr (1.41 lb) |
| Physical dimensions | 156 x 117 x 119mm (6.1" x 4.6" x 4.7") | 133 x 95 x 71mm (5.2" x 3.7" x 2.8") |
| DXO scores | ||
| DXO All around rating | 82 | 61 |
| DXO Color Depth rating | 24.6 | 22.0 |
| DXO Dynamic range rating | 12.6 | 11.2 |
| DXO Low light rating | 1262 | 476 |
| Other | ||
| Battery life | 800 photographs | - |
| Battery style | Battery Pack | - |
| Battery ID | D-LI90 | NP-FM55H |
| Self timer | Yes (2 or 10 sec) | Yes (2 or 10 sec) |
| Time lapse recording | ||
| Type of storage | SD/SDHC | Compact Flash (Type I or II) |
| Card slots | 2 | Single |
| Price at launch | $4,000 | $1,000 |