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Pentax 645D vs Samsung NX1

The Pentax 645D and the Samsung NX1 are two digital cameras that were revealed to the public, respectively, in March 2010 and September 2014. The 645D is a DSLR, while the NX1 is a mirrorless interchangeable lens camera. The cameras are based on a medium format (645D) and an APS-C (NX1) sensor. The Pentax has a resolution of 39.5 megapixels, whereas the Samsung provides 28 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Pentax 645D
versus
Samsung NX1
Pentax 645D   Samsung NX1
Digital single lens reflex Mirrorless system camera
Pentax 645 mount lenses Samsung NX mount lenses
39.5 MP – Medium Format sensor 28 MP – APS-C sensor
no Video 4K/30p Video
ISO 100-1,600 ISO 100-25,600 (100 - 51,200)
Optical viewfinder Electronic viewfinder (2360k dots)
3.0" LCD – 921k dots 3.0" LCD – 1036k dots
Fixed screen (not touch-sensitive) Tilting touchscreen
1.1 shutter flaps per second 15 shutter flaps per second
Weathersealed bodyWeathersealed body
800 shots per battery charge500 shots per battery charge
156 x 117 x 119 mm, 1480 g 139 x 102 x 66 mm, 550 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax 645D and the Samsung NX1? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

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Body comparison

The physical size and weight of the Pentax 645D and the Samsung NX1 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.

Size Pentax 645D vs Samsung NX1
Compare 645D versus NX1 top
Comparison 645D or NX1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Samsung NX1 is notably smaller (22 percent) than the Pentax 645D. Moreover, the NX1 is substantially lighter (63 percent) than the 645D. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

The power pack in the NX1 can be charged via the USB port, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995ebay.com
2.
 
Samsung NX1 139 mm 102 mm 66 mm 550 g 500 Y Sep 2014 1,499ebay.com
3.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 4,999ebay.com
4.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799ebay.com
5.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999ebay.com
6.
 
Fujifilm X-Pro2 141 mm 83 mm 46 mm 495 g 350 Y Jan 2016 1,699ebay.com
7.
 
Fujifilm X-T2 133 mm 92 mm 49 mm 507 g 340 Y Jul 2016 1,599ebay.com
8.
 
Leica S Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2012 21,950ebay.com
9.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 5,199ebay.com
10.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 6,499ebay.com
11.
 
Nikon D810 146 mm 123 mm 82 mm 980 g 1200 Y Jun 2014 3,299ebay.com
12.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 amazon.com
13.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799ebay.com
14.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499ebay.com
15.
 
Samsung NX500 120 mm 64 mm 43 mm 287 g 370 n Feb 2015 799ebay.com
16.
 
Sony A7 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699ebay.com
17.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The NX1 was launched at a markedly lower price (by 85 percent) than the 645D, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Pentax 645D features a medium format sensor and the Samsung NX1 an APS-C sensor. The sensor area in the NX1 is 75 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 1.5. The sensor in the 645D has a native 4:3 aspect ratio, while the one in the NX1 offers a 3:2 aspect.

Pentax 645D and Samsung NX1 sensor measures

With 39.5MP, the 645D offers a higher resolution than the NX1 (28MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 3.63μm for the NX1) due to its larger sensor. However, the NX1 is a much more recent model (by 4 years and 6 months) than the 645D, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Pentax 645D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645D for good quality output (200 dots per inch) amounts to 36.3 x 27.2 inches or 92.3 x 69.1 cm, for very good quality (250 dpi) 29.1 x 21.8 inches or 73.8 x 55.3 cm, and for excellent quality (300 dpi) 24.2 x 18.1 inches or 61.5 x 46.1 cm. The corresponding values for the Samsung NX1 are 32.4 x 21.6 inches or 82.3 x 54.9 cm for good quality, 25.9 x 17.3 inches or 65.8 x 43.9 cm for very good quality, and 21.6 x 14.4 inches or 54.9 x 36.6 cm for excellent quality prints.

The NX1 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Pentax 645D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Samsung NX1 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 100-51200.

In terms of underlying technology, the 645D is build around a CCD sensor, while the NX1 uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

645D versus NX1 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
2.
 
Samsung NX1 APS-C 28.0 6480 43204K/30p24.213.2136383
3.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
4.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682
5.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788
6.
 
Fujifilm X-Pro2 APS-C 24.0 6000 40001080/60p23.713.0160880
7.
 
Fujifilm X-T2 APS-C 24.0 6000 40004K/30p23.813.1165381
8.
 
Leica S Typ 006 Medium Format 37.5 7500 5000none23.912.282476
9.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
10.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
11.
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397
12.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
13.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
14.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
15.
 
Samsung NX500 APS-C 28.0 6480 43204K/30p24.813.9137987
16.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
17.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The NX1 indeed provides for movie recording, while the 645D does not. The highest resolution format that the NX1 can use is 4K/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the NX1 has an electronic viewfinder (2360k dots), while the 645D has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinder in the NX1 offers a wider field of view (100%) than the one in the 645D (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 645D has a higher magnification (0.78x vs 0.69x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Pentax 645D, the Samsung NX1, and comparable cameras.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1/s n n
2.
 
Samsung NX12360 Y3.0 / 1036 tilting Y 1/8000s 15.0/s Y n
3.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0/s n n
4.
 
Canon 1D Xoptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
5.
 
Canon 1D X Mark IIoptical Y3.2 / 1620 fixed Y 1/8000s 16.0/s n n
6.
 
Fujifilm X-Pro22360 n3.0 / 1620 fixed n 1/8000s 8.0/s n n
7.
 
Fujifilm X-T22360 n3.0 / 1040 full-flex n 1/8000s 8.0/s n n
8.
 
Leica S Typ 006optical Y3.0 / 922 fixed n 1/4000s 1.5/s n n
9.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
10.
 
Nikon D5optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
11.
 
Nikon D810optical Y3.2 / 1229 fixed n 1/8000s 5.0/s Y n
12.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
13.
 
Nikon D5300optical n3.2 / 1037 swivel n 1/4000s 5.0/s Y n
14.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
15.
 
Samsung NX500none n3.0 / 1036 tilting Y 1/6000s 9.0/s Y n
16.
 
Sony A72400 n3.0 / 1230 tilting n 1/8000s 5.0/s n n
17.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The NX1 has a touchscreen, while the 645D has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the NX1 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Pentax 645D and the Samsung NX1 both have an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

Concerning the storage of imaging data, both the 645D and the NX1 write their files to SDXC cards. The 645D features dual card slots, which can be very useful in case a memory card fails. In contrast, the NX1 only has one slot. The NX1 supports UHS-II cards on its first slot and UHS-I on its second one, while the 645D cannot take advantage of Ultra High Speed SD cards.

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Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Pentax 645D and Samsung NX1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Pentax 645DYstereo / ----2.0---
2.
 
Samsung NX1Ystereo / monoYYmicro3.0YYY
3.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
4.
 
Canon 1D XYmono / -Y-mini2.0---
5.
 
Canon 1D X Mark IIYmono / monoYYmini3.0---
6.
 
Fujifilm X-Pro2Ystereo / monoY-micro2.0Y--
7.
 
Fujifilm X-T2Ystereo / monoY-micro3.0Y--
8.
 
Leica S Typ 006Y- / ---mini2.0---
9.
 
Nikon D3SYstereo / ---mini2.0---
10.
 
Nikon D5Ystereo / monoYYmini3.0---
11.
 
Nikon D810Ystereo / monoYYmini3.0Y--
12.
 
Nikon D850Ystereo / monoYYmini3.0YYY
13.
 
Nikon D5300Ystereo / monoY-mini2.0Y--
14.
 
Pentax 645ZYstereo / monoY-mini3.0---
15.
 
Samsung NX500Ystereo / mono--micro2.0YYY
16.
 
Sony A7Ystereo / monoYYmicro2.0YY-
17.
 
Sony A7RYstereo / monoYYmicro2.0YY-

It is notable that the NX1 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 645D does not provide wifi capability.

Studio photographers will appreciate that the Pentax 645D (unlike the NX1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 645D and the NX1 have been discontinued, but can regularly be found used on ebay. The 645D was replaced by the Pentax 645Z, while the NX1 does not have a direct successor. Further information on the features and operation of the 645D and NX1 can be found, respectively, in the Pentax 645D Manual (free pdf) or the online Samsung NX1 Manual.

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Review summary

So how do things add up? Which of the two cameras – the Pentax 645D or the Samsung NX1 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Pentax 645D:

  • More detail: Offers more megapixels (39.5 vs 28MP) with a 17% higher linear resolution.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.69x).
  • Longer lasting: Can take more shots (800 versus 500) on a single battery charge.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More heavily discounted: Has been available for much longer (launched in March 2010).

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Reasons to prefer the Samsung NX1:

  • More dynamic range: Captures a broader range of light and dark details (0.6 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 4K/30p video.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
  • More detailed LCD: Has a higher resolution rear screen (1036k vs 921k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (15 vs 1.1 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (139x102mm vs 156x117mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 930g or 63 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Supports Ultra High Speed (UHS-II and UHS-I) SDXC cards.
  • More affordable: Was introduced into a lower priced category (85 percent cheaper at launch).
  • More modern: Reflects 4 years and 6 months of technical progress since the 645D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the NX1 is the clear winner of the contest (23 : 7 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

645D 07:23 NX1

How about other alternatives? Do the specifications of the Pentax 645D and the Samsung NX1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 645D or the NX1. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax 645D5/5.......... Mar 2010 9,995ebay.com
2.
 
Samsung NX15/5....87/1005/55/5 Sep 2014 1,499ebay.com
3.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 4,999ebay.com
4.
 
Canon 1D X5/5......4.5/54.5/5 Oct 2011 6,799ebay.com
5.
 
Canon 1D X Mark II....4.5/589/1004.5/54.5/5 Feb 2016 5,999ebay.com
6.
 
Fujifilm X-Pro2..+..83/1004.5/54.5/5 Jan 2016 1,699ebay.com
7.
 
Fujifilm X-T25/5+ +..86/1004.5/55/5 Jul 2016 1,599ebay.com
8.
 
Leica S Typ 006............ Sep 2012 21,950ebay.com
9.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 5,199ebay.com
10.
 
Nikon D5....4/589/1004.5/55/5 Jan 2016 6,499ebay.com
11.
 
Nikon D8105/5..5/586/1005/54.5/5 Jun 2014 3,299ebay.com
12.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 3,299 amazon.com
13.
 
Nikon D53004/5+ +..79/1004.5/54.5/5 Oct 2013 799ebay.com
14.
 
Pentax 645Z5/5..3.5/5..4.5/55/5 Apr 2014 8,499ebay.com
15.
 
Samsung NX5004.5/5....81/1005/54.5/5 Feb 2015 799ebay.com
16.
 
Sony A75/5+ +..80/1005/55/5 Oct 2013 1,699ebay.com
17.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Pentax 645D vs Samsung NX1

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Pentax 645D Samsung NX1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Pentax 645 mount lenses Samsung NX mount lenses
    Launch Date March 2010 September 2014
    Launch Price USD 9,995 USD 1,499
    Sensor Specs Pentax 645D Samsung NX1
    Sensor Technology CCD BSI-CMOS
    Sensor Format Medium Format Sensor APS-C Sensor
    Sensor Size 44.0 x 33.0 mm 23.5 x 15.7 mm
    Sensor Area 1452 mm2 368.95 mm2
    Sensor Diagonal 55 mm 28.3 mm
    Crop Factor 0.79x 1.5x
    Sensor Resolution 39.5 Megapixels 28 Megapixels
    Image Resolution 7264 x 5440 pixels 6480 x 4320 pixels
    Pixel Pitch 6.06 μm 3.63 μm
    Pixel Density 2.72 MP/cm2 7.59 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability no Video 4K/30p Video
    ISO Setting 100 - 1,600 ISO 100 - 25,600 ISO
    ISO Boost no Enhancement 100 - 51,200 ISO
    Image Processor PRIME II DRIMe 5
    DXO Sensor Quality (score) 82 83
    DXO Color Depth (bits) 24.6 24.2
    DXO Dynamic Range (EV) 12.6 13.2
    DXO Low Light (ISO) 1262 1363
    Screen Specs Pentax 645D Samsung NX1
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 98% 100%
    Viewfinder Magnification 0.78x 0.69x
    Viewfinder Resolution 2360k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 1036k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Pentax 645D Samsung NX1
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 1.1 shutter flaps/s 15 shutter flaps/s
    Shutter Life Expectancy50 000 actuations150 000 actuations
    Electronic Shutterno E-ShutterYES
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support no Single UHS-II
    Connectivity Specs Pentax 645D Samsung NX1
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 3.0
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Pentax 645D Samsung NX1
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Pentax D-LI90 Samsung BP1900
    Battery Life (CIPA)800 shots per charge500 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 156 x 117 x 119 mm
    (6.1 x 4.6 x 4.7 in)
    139 x 102 x 66 mm
    (5.5 x 4.0 x 2.6 in)
    Camera Weight 1480 g (52.2 oz) 550 g (19.4 oz)
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    Check NX1 offers at
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