Olympus E-M1 III vs Pentax 645Z
67 Imaging
61 Features
96 Overall
75
49 Imaging
79 Features
74 Overall
77
Olympus E-M1 III vs Pentax 645Z Key Specs
(Full Review)
- 20MP - Four Thirds Sensor
- 3" Fully Articulated Screen
- ISO 200 - 25600
- Sensor based 5-axis Image Stabilization
- No Anti-Alias Filter
- 1/8000s Max Shutter
- 4096 x 2160 video
- Micro Four Thirds Mount
- 580g - 134 x 91 x 69mm
- Introduced February 2020
- Replaced the Olympus E-M1 II
(Full Review)
- 51MP - Medium format Sensor
- 3.2" Tilting Screen
- ISO 100 - 204800
- No Anti-Alias Filter
- 1920 x 1080 video
- Pentax 645AF2 Mount
- 1550g - 156 x 117 x 123mm
- Released April 2014
- Older Model is Pentax 645D
Pentax 17 Pre-Orders Outperform Expectations by a Landslide Olympus E-M1 III vs Pentax 645Z Overview
Here is a in-depth comparison of the Olympus E-M1 III vs Pentax 645Z, former being a Pro Mirrorless while the latter is a Pro DSLR by rivals Olympus and Pentax. There exists a substantial gap between the sensor resolutions of the E-M1 III (20MP) and 645Z (51MP) and the E-M1 III (Four Thirds) and 645Z (Medium format) come with totally different sensor dimensions.
Photography GlossaryThe E-M1 III was brought out 5 years later than the 645Z and that is quite a big difference as far as technology is concerned. Both of the cameras come with different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.
Before delving straight into a more detailed comparison, below is a simple summary of how the E-M1 III matches up versus the 645Z in terms of portability, imaging, features and an overall rating.
President Biden pushes bill mandating TikTok sale or ban Olympus E-M1 III vs Pentax 645Z Gallery
The following is a preview of the gallery images for Olympus OM-D E-M1 Mark III & Pentax 645Z. The entire galleries are provided at Olympus E-M1 III Gallery & Pentax 645Z Gallery.
Reasons to pick Olympus E-M1 III over the Pentax 645Z
| E-M1 III | 645Z | |||
|---|---|---|---|---|
| Released | February 2020 |  | April 2014 | Fresher by 71 months |
| Screen type | Fully Articulated |  | Tilting | Fully Articulating screen |
| Selfie screen |  | Easy selfies | ||
| Touch friendly screen |  | Quickly navigate |
Reasons to pick Pentax 645Z over the Olympus E-M1 III
| 645Z | E-M1 III | |||
|---|---|---|---|---|
| Screen dimension | 3.2" |  | 3" | Bigger screen (+0.2") |
Common features in the Olympus E-M1 III and Pentax 645Z
| E-M1 III | 645Z | |||
|---|---|---|---|---|
| Manually focus |  | Dial accurate focusing | ||
| Screen resolution | 1037k |  | 1037k | The same screen resolution |
Olympus E-M1 III vs Pentax 645Z Physical Comparison
If you are intending to carry your camera often, you have to consider its weight and dimensions. The Olympus E-M1 III enjoys outer dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs) and the Pentax 645Z has dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") having a weight of 1550 grams (3.42 lbs).
Contrast the Olympus E-M1 III vs Pentax 645Z in our brand new Camera & Lens Size Comparison Tool.
Remember that, the weight of an ILC will change dependant on the lens you have attached at that time. Here is the front view overall size comparison of the E-M1 III versus the 645Z.
Considering dimensions and weight, the portability grade of the E-M1 III and 645Z is 67 and 49 respectively.
Olympus E-M1 III vs Pentax 645Z Sensor Comparison
Sometimes, it's hard to see the contrast between sensor sizing only by checking a spec sheet. The visual here should give you a better sense of the sensor dimensions in the E-M1 III and 645Z.
Clearly, both of those cameras have got different resolutions and different sensor sizing. The E-M1 III because of its tinier sensor will make achieving shallow DOF more challenging and the Pentax 645Z will resolve greater detail having its extra 31MP. Higher resolution can also allow you to crop photographs much more aggressively. The younger E-M1 III is going to have an advantage in sensor innovation.
Olympus E-M1 III vs Pentax 645Z Screen and ViewFinder
Sora from OpenAI releases its first ever music video Photography Type Scores
Portrait Comparison
Photobucket discusses licensing 13 billion images with AI firmsStreet Comparison
Meta to Introduce 'AI-Generated' Labels for Media starting next monthSports Comparison
Samsung Releases Faster Versions of EVO MicroSD CardsTravel Comparison
Japan-exclusive Leica Leitz Phone 3 features big sensor and new modesLandscape Comparison
Apple Innovates by Creating Next-Level Optical Stabilization for iPhoneVlogging Comparison
Snapchat Adds Watermarks to AI-Created Images
Olympus E-M1 III vs Pentax 645Z Specifications
| Olympus OM-D E-M1 Mark III | Pentax 645Z | |
|---|---|---|
| General Information | ||
| Brand | Olympus | Pentax |
| Model type | Olympus OM-D E-M1 Mark III | Pentax 645Z |
| Category | Pro Mirrorless | Pro DSLR |
| Introduced | 2020-02-11 | 2014-04-15 |
| Body design | SLR-style mirrorless | Large SLR |
| Sensor Information | ||
| Processor | TruePic IX | PRIME III |
| Sensor type | CMOS | CMOS |
| Sensor size | Four Thirds | Medium format |
| Sensor dimensions | 17.4 x 13mm | 44 x 33mm |
| Sensor surface area | 226.2mm² | 1,452.0mm² |
| Sensor resolution | 20 megapixels | 51 megapixels |
| Anti alias filter | ||
| Aspect ratio | 4:3 | 4:3 |
| Max resolution | 5184 x 3888 | 8256 x 6192 |
| Max native ISO | 25600 | 204800 |
| Min native ISO | 200 | 100 |
| RAW images | ||
| Min enhanced ISO | 64 | - |
| Autofocusing | ||
| Manual focusing | ||
| Autofocus touch | ||
| Autofocus continuous | ||
| Single autofocus | ||
| Autofocus tracking | ||
| Selective autofocus | ||
| Center weighted autofocus | ||
| Multi area autofocus | ||
| Autofocus live view | ||
| Face detection focus | ||
| Contract detection focus | ||
| Phase detection focus | ||
| Total focus points | 121 | 27 |
| Cross type focus points | 121 | - |
| Lens | ||
| Lens support | Micro Four Thirds | Pentax 645AF2 |
| Available lenses | 107 | 6 |
| Focal length multiplier | 2.1 | 0.8 |
| Screen | ||
| Range of screen | Fully Articulated | Tilting |
| Screen sizing | 3" | 3.2" |
| Screen resolution | 1,037 thousand dot | 1,037 thousand dot |
| Selfie friendly | ||
| Liveview | ||
| Touch operation | ||
| Viewfinder Information | ||
| Viewfinder type | Electronic | Optical (pentaprism) |
| Viewfinder resolution | 2,360 thousand dot | - |
| Viewfinder coverage | 100% | 98% |
| Viewfinder magnification | 0.74x | 0.85x |
| Features | ||
| Minimum shutter speed | 60 seconds | 30 seconds |
| Fastest shutter speed | 1/8000 seconds | 1/4000 seconds |
| Fastest silent shutter speed | 1/32000 seconds | - |
| Continuous shutter speed | 60.0 frames/s | 3.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manual exposure | ||
| Exposure compensation | Yes | Yes |
| Set white balance | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash distance | no built-in flash | no built-in flash |
| Flash options | Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual | Flash On, Flash On+Red-eye Reduction, Slow-speed Sync, Slow-speed Sync+Red-eye, P-TTL, Trailing Curtain Sync, contrast-control-sync, high-speed sync, wireless sync |
| Hot shoe | ||
| AEB | ||
| WB bracketing | ||
| Fastest flash sync | 1/250 seconds | 1/125 seconds |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Supported video resolutions | 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 23.98p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 50p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 25p, MOV, H.264, Linear PCM1920 x 1080 @ 23.98p, MOV, H.264, Linear PCM | 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) |
| Max video resolution | 4096x2160 | 1920x1080 |
| Video file format | MPEG-4, H.264 | MPEG-4, H.264 |
| Mic input | ||
| Headphone input | ||
| Connectivity | ||
| Wireless | Built-In | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 3.1 Gen 1 (5 GBit/sec) | USB 3.0 (5 GBit/sec) |
| GPS | None | Optional |
| Physical | ||
| Environmental seal | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 580g (1.28 pounds) | 1550g (3.42 pounds) |
| Dimensions | 134 x 91 x 69mm (5.3" x 3.6" x 2.7") | 156 x 117 x 123mm (6.1" x 4.6" x 4.8") |
| DXO scores | ||
| DXO Overall rating | not tested | 101 |
| DXO Color Depth rating | not tested | 26.0 |
| DXO Dynamic range rating | not tested | 14.7 |
| DXO Low light rating | not tested | 4505 |
| Other | ||
| Battery life | 420 images | 650 images |
| Battery format | Battery Pack | Battery Pack |
| Battery ID | BLH-1 | D-LI90 |
| Self timer | Yes (2 or 12 secs, custom) | Yes (2 or 10 secs) |
| Time lapse shooting | ||
| Storage media | Dual SD/SDHC/SDXC slots (UHS-II on first slot) | Dual SD/SDHC/SDXC slots |
| Storage slots | Two | Two |
| Pricing at release | $1,800 | $5,024 |