A potelyt.com – Photography & Imaging Resources
ad
PW

Pentax 645D vs Sony NEX-6

The Pentax 645D and the Sony Alpha NEX-6 are two digital cameras that were officially introduced, respectively, in March 2010 and September 2012. The 645D is a DSLR, while the NEX-6 is a mirrorless interchangeable lens camera. The cameras are based on a medium format (645D) and an APS-C (NEX-6) sensor. The Pentax has a resolution of 39.5 megapixels, whereas the Sony provides 16 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
Sony NEX-6
Pentax 645D   Sony NEX-6
Digital single lens reflex Mirrorless system camera
Pentax 645 mount lenses Sony E mount lenses
39.5 MP – Medium Format sensor 16 MP – APS-C sensor
no Video 1080/60i Video
ISO 100-1,600 ISO 100-25,600
Optical viewfinder Electronic viewfinder (2359k dots)
3.0" LCD – 921k dots 3.0" LCD – 921k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
1.1 shutter flaps per second 10 shutter flaps per second
Weathersealed bodynot weather sealed
800 shots per battery charge360 shots per battery charge
156 x 117 x 119 mm, 1480 g 120 x 67 x 43 mm, 345 g
logo
Check 645D offers at
ebay.com
logo
Check NEX-6 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax 645D and the Sony Alpha NEX-6? 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.

Body comparison

The physical size and weight of the Pentax 645D and the Sony NEX-6 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 size dimensions are rounded to the nearest millimeter.

Size Pentax 645D vs Sony NEX-6
Compare 645D versus NEX-6 top
Comparison 645D or NEX-6 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony NEX-6 is considerably smaller (56 percent) than the Pentax 645D. Moreover, the NEX-6 is substantially lighter (77 percent) than the 645D. It is worth mentioning in this context that the 645D is splash and dust resistant, while the NEX-6 does not feature any corresponding weather-sealing.

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.

Concerning battery life, the 645D gets 800 shots out of its D-LI90 battery, while the NEX-6 can take 360 images on a single charge of its NP-FW50 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

scroll hint
Body Specifications
    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.
 
Sony NEX-6 120 mm 67 mm 43 mm 345 g 360 n Sep 2012 999ebay.com
3.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999ebay.com
4.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799ebay.com
5.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 4,999ebay.com
6.
 
Leica S Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2012 21,950ebay.com
7.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 amazon.com
8.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 6,499ebay.com
9.
 
Nikon D810 146 mm 123 mm 82 mm 980 g 1200 Y Jun 2014 3,299ebay.com
10.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 5,199ebay.com
11.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499 amazon.com
12.
 
Sony A6000 120 mm 67 mm 45 mm 344 g 360 n Feb 2014 599ebay.com
13.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299ebay.com
14.
 
Sony A3000 128 mm 91 mm 85 mm 411 g 470 n Aug 2013 329ebay.com
15.
 
Sony NEX-3N 110 mm 62 mm 35 mm 269 g 480 n Feb 2013 499ebay.com
16.
 
Sony NEX-F3 117 mm 67 mm 42 mm 314 g 470 n May 2012 599ebay.com
17.
 
Sony NEX-3 117 mm 62 mm 33 mm 297 g 330 n May 2010 599ebay.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 obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The NEX-6 was launched at a markedly lower price (by 90 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. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Pentax 645D features a medium format sensor and the Sony NEX-6 an APS-C sensor. The sensor area in the NEX-6 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 NEX-6 offers a 3:2 aspect.

Pentax 645D and Sony NEX-6 sensor measures

With 39.5MP, the 645D offers a higher resolution than the NEX-6 (16MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 4.78μm for the NEX-6) due to its larger sensor. However, the NEX-6 is a much more recent model (by 2 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 the 645D has no anti-alias filter installed, so that it can capture all the detail its 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 Sony NEX-6 are 24.6 x 16.3 inches or 62.4 x 41.5 cm for good quality, 19.6 x 13.1 inches or 49.9 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.6 x 27.6 cm for excellent quality prints.

The Pentax 645D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Sony Alpha NEX-6 are ISO 100 to ISO 25600 (no boost).

In terms of underlying technology, the 645D is build around a CCD sensor, while the NEX-6 uses a 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 NEX-6 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"). Of the two cameras under review, the 645D has a notably higher overall DXO score than the NEX-6 (overall score 4 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.9 bits higher color depth, 0.5 EV of lower dynamic range, and 0.3 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

scroll hint
Sensor Characteristics
    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.
 
Sony NEX-6 APS-C 16.0 4912 32641080/60i23.713.1101878
3.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788
4.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682
5.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
6.
 
Leica S Typ 006 Medium Format 37.5 7500 5000none23.912.282476
7.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
8.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
9.
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397
10.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
11.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
12.
 
Sony A6000 APS-C 24.0 6000 40001080/60p24.113.1134782
13.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
14.
 
Sony A3000 APS-C 19.8 5456 36321080/60i23.712.8106878
15.
 
Sony NEX-3N APS-C 16.0 4912 32641080/60i22.812.5106774
16.
 
Sony NEX-F3 APS-C 16.0 4912 32641080/60i22.712.3111473
17.
 
Sony NEX-3 APS-C 14.0 4592 3056720/30p22.112.083068

Many modern cameras are not only capable of taking still images, but can also record movies. The NEX-6 indeed provides for movie recording, while the 645D does not. The highest resolution format that the NEX-6 can use is 1080/60i.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the NEX-6 has an electronic viewfinder (2359k 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 NEX-6 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 0.73x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Pentax 645D and Sony NEX-6 along with similar information for a selection of comparators.

scroll hint
Core Features
    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.
 
Sony NEX-62359 n3.0 / 921 tilting n 1/4000s 10.0/s Y n
3.
 
Canon 1D X Mark IIoptical Y3.2 / 1620 fixed Y 1/8000s 16.0/s n n
4.
 
Canon 1D Xoptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
5.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0/s n n
6.
 
Leica S Typ 006optical Y3.0 / 922 fixed n 1/4000s 1.5/s n n
7.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
8.
 
Nikon D5optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
9.
 
Nikon D810optical Y3.2 / 1229 fixed n 1/8000s 5.0/s Y n
10.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
11.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
12.
 
Sony A60001440 n3.0 / 922 tilting n 1/4000s 11.0/s Y n
13.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
14.
 
Sony A3000202 n3.0 / 230 fixed n 1/4000s 2.5/s Y n
15.
 
Sony NEX-3Noptional n3.0 / 460 tilting n 1/4000s 4.0/s Y n
16.
 
Sony NEX-F3optional n3.0 / 920 tilting n 1/4000s 5.5/s Y n
17.
 
Sony NEX-3optional n3.0 / 920 tilting n 1/4000s 7.0/s n n
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the 645D, but is missing on the NEX-6 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The Pentax 645D has 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.

The 645D writes its imaging data to SDXC cards, while the NEX-6 uses SDXC or Memory Stick PRO Duo cards. The 645D features dual card slots, which can be very useful in case a memory card fails. In contrast, the NEX-6 only has one slot. The NEX-6 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the 645D cannot take advantage of Ultra High Speed SD cards.

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 Sony Alpha NEX-6 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

scroll hint
Input-Output Connections
    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.
 
Sony NEX-6Ystereo / mono--mini2.0Y--
3.
 
Canon 1D X Mark IIYmono / monoYYmini3.0---
4.
 
Canon 1D XYmono / -Y-mini2.0---
5.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
6.
 
Leica S Typ 006Y- / ---mini2.0---
7.
 
Nikon D850Ystereo / monoYYmini3.0YYY
8.
 
Nikon D5Ystereo / monoYYmini3.0---
9.
 
Nikon D810Ystereo / monoYYmini3.0Y--
10.
 
Nikon D3SYstereo / ---mini2.0---
11.
 
Pentax 645ZYstereo / monoY-mini3.0---
12.
 
Sony A6000Ystereo / mono--micro2.0YY-
13.
 
Sony A7RYstereo / monoYYmicro2.0YY-
14.
 
Sony A3000Ystereo / mono--mini2.0---
15.
 
Sony NEX-3N-stereo / mono--micro2.0---
16.
 
Sony NEX-F3Ystereo / mono--mini2.0---
17.
 
Sony NEX-3Ystereo / mono--mini2.0---

It is notable that the NEX-6 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 NEX-6) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 645D and the NEX-6 have been discontinued, but can regularly be found used on ebay. The 645D was replaced by the Pentax 645Z, while the NEX-6 was followed by the Sony A6000. Further information on the features and operation of the 645D and NEX-6 can be found, respectively, in the Pentax 645D Manual (free pdf) or the online Sony NEX-6 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Pentax 645D or the Sony NEX-6 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

ilogo

Advantages of the Pentax 645D:

  • More detail: Offers more megapixels (39.5 vs 16MP) with a 54% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores markedly higher (4 points) in the DXO overall assessment.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.73x).
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (800 versus 360) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • 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).

ilogo

Arguments in favor of the Sony Alpha NEX-6:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Broader imaging potential: Can capture not only stills but also 1080/60i video.
  • 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 flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster burst: Shoots at higher frequency (10 vs 1.1 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (120x67mm vs 156x117mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 1135g or 77 percent) and is thus easier to take along.
  • 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.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More affordable: Was introduced into a lower priced category (90 percent cheaper at launch).
  • More modern: Reflects 2 years and 6 months of technical progress since the 645D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the NEX-6 emerges as the winner of the match-up (14 : 12 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. 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 12:14 NEX-6

How about other alternatives? Do the specifications of the Pentax 645D and the Sony NEX-6 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 NEX-6. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major 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.

scroll hint
Expert Camera Reviews
     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.
 
Sony NEX-65/5+ +..78/1004.5/54.5/5 Sep 2012 999ebay.com
3.
 
Canon 1D X Mark II....4.5/589/1004.5/54.5/5 Feb 2016 5,999ebay.com
4.
 
Canon 1D X5/5......4.5/54.5/5 Oct 2011 6,799ebay.com
5.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 4,999ebay.com
6.
 
Leica S Typ 006............ Sep 2012 21,950ebay.com
7.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 3,299 amazon.com
8.
 
Nikon D5....4/589/1004.5/55/5 Jan 2016 6,499ebay.com
9.
 
Nikon D8105/5..5/586/1005/54.5/5 Jun 2014 3,299ebay.com
10.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 5,199ebay.com
11.
 
Pentax 645Z5/5......4.5/55/5 Apr 2014 8,499 amazon.com
12.
 
Sony A60005/5+4.5/580/1004.5/55/5 Feb 2014 599ebay.com
13.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299ebay.com
14.
 
Sony A30003/5+....4/54/5 Aug 2013 329ebay.com
15.
 
Sony NEX-3N3/5......4.5/54.5/5 Feb 2013 499ebay.com
16.
 
Sony NEX-F34/5....74/1004.5/54.5/5 May 2012 599ebay.com
17.
 
Sony NEX-3......70/1004.5/54/5 May 2010 599ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

logo
Check 645D offers at
ebay.com
logo
Check NEX-6 offers at
ebay.com

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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

~
    loader

    Specifications: Pentax 645D vs Sony NEX-6

    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 Sony NEX-6
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Pentax 645 mount lenses Sony E mount lenses
    Launch Date March 2010 September 2012
    Launch Price USD 9,995 USD 999
    Sensor Specs Pentax 645D Sony NEX-6
    Sensor Technology CCD CMOS
    Sensor Format Medium Format Sensor APS-C Sensor
    Sensor Size 44.0 x 33.0 mm 23.4 x 15.6 mm
    Sensor Area 1452 mm2 365.04 mm2
    Sensor Diagonal 55 mm 28.1 mm
    Crop Factor 0.79x 1.5x
    Sensor Resolution 39.5 Megapixels 16 Megapixels
    Image Resolution 7264 x 5440 pixels 4912 x 3264 pixels
    Pixel Pitch 6.06 μm 4.78 μm
    Pixel Density 2.72 MP/cm2 4.39 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 100 - 1,600 ISO 100 - 25,600 ISO
    Image Processor PRIME II BIONZ
    DXO Sensor Quality (score) 82 78
    DXO Color Depth (bits) 24.6 23.7
    DXO Dynamic Range (EV) 12.6 13.1
    DXO Low Light (ISO) 1262 1018
    Screen Specs Pentax 645D Sony NEX-6
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 98% 100%
    Viewfinder Magnification 0.78x 0.73x
    Viewfinder Resolution 2359k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 921k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Pentax 645D Sony NEX-6
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 1.1 shutter flaps/s 10 shutter flaps/s
    Shutter Life Expectancy50 000 actuations150 000 actuations
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support no UHS-I
    Connectivity Specs Pentax 645D Sony NEX-6
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Wifi Support no Wifi Wifi built-in
    Body Specs Pentax 645D Sony NEX-6
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type D-LI90 NP-FW50
    Battery Life (CIPA)800 shots per charge360 shots per charge
    Body Dimensions 156 x 117 x 119 mm
    (6.1 x 4.6 x 4.7 in)
    120 x 67 x 43 mm
    (4.7 x 2.6 x 1.7 in)
    Camera Weight 1480 g (52.2 oz) 345 g (12.2 oz)
    logo
    Check 645D offers at
    ebay.com
    logo
    Check NEX-6 offers at
    ebay.com

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

    You are here Home  »  CAM-parator  »  Pentax 645D vs Sony NEX-6