Canon 30D vs Pentax K-3 III
58 Imaging
46 Features
39 Overall
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58 Imaging
70 Features
86 Overall
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Canon 30D vs Pentax K-3 III Key Specs
(Full Review)
(Full Review)
- 26MP - APS-C Sensor
- 3.2" Fixed Display
- ISO 100 - 1600000
- Sensor based Image Stabilization
- No Anti-Alias Filter
- 1/8000s Max Shutter
- 3840 x 2160 video
- Pentax KAF2 Mount
- 820g - 135 x 104 x 74mm
- Launched March 2021
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Let's look more closely at the Canon 30D versus Pentax K-3 III, both Advanced DSLR digital cameras by manufacturers Canon and Pentax. There exists a crucial gap between the sensor resolutions of the 30D (8MP) and K-3 III (26MP) but both cameras provide the same sensor sizing (APS-C).
Photobucket discusses licensing 13 billion images with AI firmsThe 30D was announced 16 years before the K-3 III and that is quite a serious gap as far as technology is concerned. Each of the cameras have the same body design (Mid-size SLR).
Before delving straight to a comprehensive comparison, here is a quick introduction of how the 30D grades vs the K-3 III when it comes to portability, imaging, features and an overall grade.
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Below is a sample of the gallery pics for Canon EOS 30D and Pentax K-3 Mark III. The whole galleries are provided at Canon 30D Gallery and Pentax K-3 III Gallery.
Reasons to pick Canon 30D over the Pentax K-3 III
| 30D | K-3 III |
|---|
Reasons to pick Pentax K-3 III over the Canon 30D
| K-3 III | 30D | |||
|---|---|---|---|---|
| Launched | March 2021 | April 2006 | More recent by 182 months | |
| Display dimensions | 3.2" | 2.5" | Larger display (+0.7") | |
| Display resolution | 1620k | 230k | Crisper display (+1390k dot) | |
| Touch display | Easily navigate |
Common features in the Canon 30D and Pentax K-3 III
| 30D | K-3 III | |||
|---|---|---|---|---|
| Focus manually | Very precise focus | |||
| Display type | Fixed | Fixed | Fixed display | |
| Selfie screen | Neither contains selfie screen |
Canon 30D vs Pentax K-3 III Physical Comparison
When you are aiming to lug around your camera often, you are going to need to take into account its weight and measurements. The Canon 30D has got physical dimensions of 144mm x 106mm x 74mm (5.7" x 4.2" x 2.9") having a weight of 784 grams (1.73 lbs) whilst the Pentax K-3 III has proportions of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") accompanied by a weight of 820 grams (1.81 lbs).
See the Canon 30D versus Pentax K-3 III in the all new Camera with Lens Size Comparison Tool.
Don't forget, the weight of an Interchangeable Lens Camera will differ based on the lens you are working with at the time. Below is a front view size comparison of the 30D compared to the K-3 III.

Factoring in dimensions and weight, the portability rating of the 30D and K-3 III is 58 and 58 respectively.
Canon 30D vs Pentax K-3 III Sensor Comparison
Typically, it's tough to visualize the contrast between sensor measurements just by checking technical specs. The graphic here will provide you a more clear sense of the sensor dimensions in the 30D and K-3 III.
As you have seen, the 2 cameras provide the same sensor dimensions but different MP. You should expect to see the Pentax K-3 III to give extra detail with its extra 18MP. Greater resolution will also help you crop images more aggressively. The older 30D is going to be disadvantaged in sensor technology.
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Canon 30D vs Pentax K-3 III Specifications
| Canon EOS 30D | Pentax K-3 Mark III | |
|---|---|---|
| General Information | ||
| Brand Name | Canon | Pentax |
| Model type | Canon EOS 30D | Pentax K-3 Mark III |
| Category | Advanced DSLR | Advanced DSLR |
| Released | 2006-04-04 | 2021-03-31 |
| Physical type | Mid-size SLR | Mid-size SLR |
| Sensor Information | ||
| Sensor type | CMOS | CMOS |
| Sensor size | APS-C | APS-C |
| Sensor measurements | 22.5 x 15mm | 23 x 15.5mm |
| Sensor surface area | 337.5mm² | 356.5mm² |
| Sensor resolution | 8 megapixels | 26 megapixels |
| Anti alias filter | ||
| Aspect ratio | 3:2 | 3:2 |
| Maximum resolution | 3504 x 2336 | 6192 x 4128 |
| Maximum native ISO | 1600 | 1600000 |
| Maximum boosted ISO | 3200 | - |
| Min native ISO | 100 | 100 |
| RAW data | ||
| Autofocusing | ||
| Manual focusing | ||
| Touch to focus | ||
| AF continuous | ||
| Single AF | ||
| AF tracking | ||
| AF selectice | ||
| Center weighted AF | ||
| Multi area AF | ||
| Live view AF | ||
| Face detection AF | ||
| Contract detection AF | ||
| Phase detection AF | ||
| Total focus points | 9 | 101 |
| Cross type focus points | - | 25 |
| Lens | ||
| Lens support | Canon EF/EF-S | Pentax KAF2 |
| Total lenses | 326 | 156 |
| Focal length multiplier | 1.6 | 1.6 |
| Screen | ||
| Screen type | Fixed Type | Fixed Type |
| Screen diagonal | 2.5 inch | 3.2 inch |
| Screen resolution | 230k dots | 1,620k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch functionality | ||
| Viewfinder Information | ||
| Viewfinder type | Optical (pentaprism) | Optical (pentaprism) |
| Viewfinder coverage | 95 percent | 100 percent |
| Viewfinder magnification | 0.56x | 0.7x |
| Features | ||
| Slowest shutter speed | 30 seconds | 30 seconds |
| Maximum shutter speed | 1/8000 seconds | 1/8000 seconds |
| Continuous shooting rate | 5.0 frames/s | 12.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Custom WB | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | 12.00 m (ISO 100) | no built-in flash |
| Flash modes | Auto, On, Red-eye reduction, Off | Auto, Auto + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow- speed Sync, Slow-speed Sync + Red-eye, P-TTL, Contrast-control-sync, High-speed sync, Wireless sync |
| External flash | ||
| Auto exposure bracketing | ||
| WB bracketing | ||
| Maximum flash synchronize | 1/250 seconds | 1/200 seconds |
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| Video features | ||
| Supported video resolutions | - | 3840 x 2160 @ 30p, MOV, H.264, Linear PCM3840 x 2160 @ 24p, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 24p, MOV, H.264, Linear PCM |
| Maximum video resolution | None | 3840x2160 |
| Video format | - | MPEG-4, H.264 |
| Microphone port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | None | Built-In |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 3.2 Gen 1 (5 GBit/sec) |
| GPS | None | None |
| Physical | ||
| Environmental sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 784 grams (1.73 lbs) | 820 grams (1.81 lbs) |
| Physical dimensions | 144 x 106 x 74mm (5.7" x 4.2" x 2.9") | 135 x 104 x 74mm (5.3" x 4.1" x 2.9") |
| DXO scores | ||
| DXO All around rating | 59 | not tested |
| DXO Color Depth rating | 21.5 | not tested |
| DXO Dynamic range rating | 10.8 | not tested |
| DXO Low light rating | 736 | not tested |
| Other | ||
| Battery life | - | 800 images |
| Battery type | - | Battery Pack |
| Battery ID | - | D-LI90 |
| Self timer | Yes (10 sec (2 sec with mirror lock-up)) | Yes |
| Time lapse feature | ||
| Storage type | Compact Flash (Type I or II) | Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1) |
| Card slots | Single | Dual |
| Launch cost | $773 | $1,999 |