Pentax 645Z vs Ricoh WG-4 GPS
49 Imaging
78 Features
74 Overall
76
90 Imaging
39 Features
43 Overall
40
Pentax 645Z vs Ricoh WG-4 GPS Key Specs
(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
- Introduced April 2014
- Replaced the Pentax 645D
(Full Review)
- 16MP - 1/2.3" Sensor
- 3" Fixed Display
- ISO 125 - 6400
- Sensor-shift Image Stabilization
- 1920 x 1080 video
- 25-100mm (F2.0-4.9) lens
- 235g - 124 x 64 x 33mm
- Announced February 2014
- Refreshed by Ricoh WG-5 GPS
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Its time to look a little more closely at the Pentax 645Z versus Ricoh WG-4 GPS, one being a Pro DSLR and the other is a Waterproof by manufacturers Pentax and Ricoh. There exists a significant gap between the sensor resolutions of the 645Z (51MP) and WG-4 GPS (16MP) and the 645Z (Medium format) and WG-4 GPS (1/2.3") feature different sensor sizing.
President Biden pushes bill mandating TikTok sale or banThe 645Z was launched 3 months later than the WG-4 GPS so they are both of a similar generation. Each of these cameras come with different body type with the Pentax 645Z being a Large SLR camera and the Ricoh WG-4 GPS being a Compact camera.
Before delving in to a step-by-step comparison, below is a quick summation of how the 645Z scores versus the WG-4 GPS when it comes to portability, imaging, features and an overall grade.
Photography Glossary Pentax 645Z vs Ricoh WG-4 GPS Gallery
This is a sample of the gallery pics for Pentax 645Z and Ricoh WG-4 GPS. The complete galleries are provided at Pentax 645Z Gallery and Ricoh WG-4 GPS Gallery.
Reasons to pick Pentax 645Z over the Ricoh WG-4 GPS
| 645Z | WG-4 GPS | |||
|---|---|---|---|---|
| Display type | Tilting |  | Fixed | Tilting display |
| Display dimension | 3.2" |  | 3" | Larger display (+0.2") |
| Display resolution | 1037k |  | 460k | Crisper display (+577k dot) |
Reasons to pick Ricoh WG-4 GPS over the Pentax 645Z
| WG-4 GPS | 645Z |
|---|
Common features in the Pentax 645Z and Ricoh WG-4 GPS
| 645Z | WG-4 GPS | |||
|---|---|---|---|---|
| Announced | April 2014 |  | February 2014 | Similar generation |
| Manual focus |  | Dial exact focusing | ||
| Selfie screen |  | Neither comes with selfie screen | ||
| Touch display |  | Neither comes with Touch display |
Pentax 645Z vs Ricoh WG-4 GPS Physical Comparison
When you are going to lug around your camera, you are going to need to take into account its weight and proportions. The Pentax 645Z comes with exterior measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") along with a weight of 1550 grams (3.42 lbs) while the Ricoh WG-4 GPS has measurements of 124mm x 64mm x 33mm (4.9" x 2.5" x 1.3") having a weight of 235 grams (0.52 lbs).
See the Pentax 645Z versus Ricoh WG-4 GPS in the new Camera and Lens Size Comparison Tool.
Keep in mind, the weight of an Interchangeable Lens Camera will vary based on the lens you have attached at that moment. Below is the front view overall size comparison of the 645Z vs the WG-4 GPS.
Using dimensions and weight, the portability grade of the 645Z and WG-4 GPS is 49 and 90 respectively.
Pentax 645Z vs Ricoh WG-4 GPS Sensor Comparison
Typically, its hard to visualize the contrast between sensor measurements simply by checking technical specs. The graphic here will help give you a more clear sense of the sensor measurements in the 645Z and WG-4 GPS.
As you have seen, both of those cameras posses different megapixels and different sensor measurements. The 645Z due to its larger sensor is going to make achieving bokeh easier and the Pentax 645Z will give you extra detail utilizing its extra 35MP. Greater resolution will enable you to crop images somewhat more aggressively.
Pentax 645Z vs Ricoh WG-4 GPS Screen and ViewFinder
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Pentax 645Z vs Ricoh WG-4 GPS Specifications
| Pentax 645Z | Ricoh WG-4 GPS | |
|---|---|---|
| General Information | ||
| Brand | Pentax | Ricoh |
| Model type | Pentax 645Z | Ricoh WG-4 GPS |
| Class | Pro DSLR | Waterproof |
| Introduced | 2014-04-15 | 2014-02-05 |
| Physical type | Large SLR | Compact |
| Sensor Information | ||
| Powered by | PRIME III | - |
| Sensor type | CMOS | BSI-CMOS |
| Sensor size | Medium format | 1/2.3" |
| Sensor measurements | 44 x 33mm | 6.17 x 4.55mm |
| Sensor surface area | 1,452.0mm² | 28.1mm² |
| Sensor resolution | 51MP | 16MP |
| Anti alias filter | ||
| Aspect ratio | 4:3 | 1:1, 4:3 and 16:9 |
| Maximum resolution | 8256 x 6192 | 4608 x 3456 |
| Maximum native ISO | 204800 | 6400 |
| Min native ISO | 100 | 125 |
| RAW images | ||
| Autofocusing | ||
| Manual focusing | ||
| Touch focus | ||
| Continuous AF | ||
| AF single | ||
| Tracking AF | ||
| AF selectice | ||
| Center weighted AF | ||
| AF multi area | ||
| Live view AF | ||
| Face detection AF | ||
| Contract detection AF | ||
| Phase detection AF | ||
| Total focus points | 27 | 9 |
| Lens | ||
| Lens mount type | Pentax 645AF2 | fixed lens |
| Lens zoom range | - | 25-100mm (4.0x) |
| Maximal aperture | - | f/2.0-4.9 |
| Macro focusing range | - | 1cm |
| Number of lenses | 6 | - |
| Crop factor | 0.8 | 5.8 |
| Screen | ||
| Type of screen | Tilting | Fixed Type |
| Screen diagonal | 3.2" | 3" |
| Screen resolution | 1,037 thousand dots | 460 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch display | ||
| Screen tech | - | TFT LCD |
| Viewfinder Information | ||
| Viewfinder | Optical (pentaprism) | None |
| Viewfinder coverage | 98% | - |
| Viewfinder magnification | 0.85x | - |
| Features | ||
| Lowest shutter speed | 30 seconds | 4 seconds |
| Highest shutter speed | 1/4000 seconds | 1/4000 seconds |
| Continuous shooting rate | 3.0 frames per second | 2.0 frames per second |
| Shutter priority | ||
| Aperture priority | ||
| Manual mode | ||
| Exposure compensation | Yes | - |
| Set WB | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | no built-in flash | 10.00 m (Auto ISO) |
| Flash modes | 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 | Auto, flash off, flash on, auto + redeye, on + redeye |
| Hot shoe | ||
| AE bracketing | ||
| White balance bracketing | ||
| Highest flash synchronize | 1/125 seconds | - |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Supported video resolutions | 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) | 1920 x 1080 (30p), 1280 x 720 (60p, 30p) |
| Maximum video resolution | 1920x1080 | 1920x1080 |
| Video format | MPEG-4, H.264 | H.264 |
| Microphone port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | None | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 3.0 (5 GBit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | Optional | BuiltIn |
| Physical | ||
| Environment sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 1550g (3.42 lbs) | 235g (0.52 lbs) |
| Dimensions | 156 x 117 x 123mm (6.1" x 4.6" x 4.8") | 124 x 64 x 33mm (4.9" x 2.5" x 1.3") |
| DXO scores | ||
| DXO All around rating | 101 | not tested |
| DXO Color Depth rating | 26.0 | not tested |
| DXO Dynamic range rating | 14.7 | not tested |
| DXO Low light rating | 4505 | not tested |
| Other | ||
| Battery life | 650 images | 240 images |
| Battery type | Battery Pack | Battery Pack |
| Battery ID | D-LI90 | D-LI92 |
| Self timer | Yes (2 or 10 secs) | Yes (2 or 10 secs) |
| Time lapse shooting | ||
| Storage type | Dual SD/SDHC/SDXC slots | SD/SDHC/SDXC, internal |
| Card slots | 2 | Single |
| Pricing at launch | $5,024 | $210 |