5.75 in 4.88 in  | 6.14 in 4.61 in  | |
| Available colors | ||
| Editiorial reviews | ||
| User rating |
 Nikon D850 |  Pentax 645D | |
|---|---|---|
| Sensor type | CMOS | CCD |
| Image sensor format | FX | Medium format |
| Sensor size | 1.41 in | 1.73 in |
| Effective pixels | 45.75 Mpx | 40.0 Mpx |
| Max resolution | 8256 x 5504 px | 7264 x 5440 px |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| ISO |
|
|
| ISO minimum | 64 | 100 |
| ISO maximum | 25600 | 1600 |
| White balance modes |
|
|
| Supported image file formats |
|
|
| HDR | yes | yes |
| AEB/HDR support | yes | yes |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| Lens mount | Nikon AF-S | Pentax 645AF2 |
| Magnification (Crop factor) | 1.0 x | 1.3 x |
| Maximum aperture | 4 | 2.8 |
| AF assist (auto-focus assist light) | Lamp | no |
| Focus adjustment | Auto/Manual | Auto |
| Contrast autofocus | yes | no |
| Autofocus |
|
|
| Max number of AF points (incl. assistant) | 153 | 11 |
| Image stabiliser | Lens based only | No |
| Filter diameter | 3.03 in | 2.64 in |
| Phase detection autofocus | yes | yes |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| Screen size | 3.2 in | 3.0 in |
| Articulated LCD | yes | no |
| Screen technology | LCD | LCD TFT |
| Screen dots | 2360000 | 921000 |
| Touch screen | yes | no |
| Viewfinder | Optical | Optical |
| Viewfinder coverage | 100.0 % | 98.0 % |
| Viewfinder magnification | 0.75 x | 0.17 x |
| Separate info display | yes | yes |
| Flip-out screen | no | no |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| Continuous shooting | yes | yes |
| Flash sync speed | 1/250s | 1/125s |
| Flash modes |
|
|
| External flash connection | Hot shoe |
|
| Flash metering system | i-TTL | P-TTL |
| Manual settings | yes | yes |
| Speed (RAW) | 7.0 fps | 1.1 fps |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| Video recording | yes | no |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| Body type | SLR | SLR |
| Body material | Aluminum-magnesium | Aluminum-magnesium |
| Colour of product | Black | Black |
| Anti-dust system | yes | yes |
| Environmentally sealed | yes | yes |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| Weight | 32.28 oz | 49.38 oz |
| Width | 5.75 in | 6.14 in |
| Height | 4.88 in | 4.61 in |
| Depth | 3.09 in | 4.69 in |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| Compatible memory cards |
|
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| Storage types |
|
|
| Nikon D850 | Pentax 645D | |
|---|---|---|
| Power source type | Battery | Battery |
| Battery life (CIPA) | 1840 | 800 |
| Battery technology | Lithium-Ion | Lithium-Ion |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| HDMI | yes | yes |
| USB connector type | Micro-USB B | Mini-USB B |
| USB version | 3.1 | 2.0 |
| NFC | no | no |
| Wireless network (Wi-Fi) | yes | no |
| Bluetooth | yes | no |
| Firewire | no | no |
| Nikon D850 | Pentax 645D | |
|---|---|---|
| GPS | yes | no |
| Pros | ||
|---|---|---|
| Cons |
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