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Nikon D5500 vs Pentax 645D

The Nikon D5500 and the Pentax 645D are two digital cameras that were officially introduced, respectively, in January 2015 and March 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D5500) and a medium format (645D) sensor. The Nikon has a resolution of 24 megapixels, whereas the Pentax provides 39.5 MP.

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

Headline Specifications
Nikon D5500
versus
Pentax 645D
Nikon D5500   Pentax 645D
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Pentax 645 mount lenses
24 MP – APS-C sensor 39.5 MP – Medium Format sensor
1080/60p Video no Video
ISO 100-25,600 ISO 100-1,600
Optical viewfinder Optical viewfinder
3.2" LCD – 1037k dots 3.0" LCD – 921k dots
Swivel touchscreen Fixed screen (not touch-sensitive)
5 shutter flaps per second 1.1 shutter flaps per second
not weather sealedWeathersealed body
820 shots per battery charge800 shots per battery charge
124 x 97 x 70 mm, 470 g 156 x 117 x 119 mm, 1480 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D5500 and the Pentax 645D? 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

An illustration of the physical size and weight of the Nikon D5500 and the Pentax 645D is provided 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.

The D5500 can be obtained in two different colors (black, red), while the 645D is only available in black.

Size Nikon D5500 vs Pentax 645D
Compare D5500 versus 645D top
Comparison D5500 or 645D rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645D is considerably larger (52 percent) than the Nikon D5500. Moreover, the 645D is substantially heavier (215 percent) than the D5500. It is noteworthy in this context that the 645D is splash and dust-proof, while the D5500 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 D5500 gets 820 shots out of its EN-EL14a battery, while the 645D can take 800 images on a single charge of its D-LI90 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D5500 124 mm 97 mm 70 mm 470 g 820 n Jan 2015 899ebay.com
2.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995ebay.com
3.
 
Canon M5 116 mm 89 mm 61 mm 427 g 295 n Sep 2016 979ebay.com
4.
 
Canon 750D 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 749ebay.com
5.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799ebay.com
6.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 4,999ebay.com
7.
 
Leica S Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2012 21,950ebay.com
8.
 
Nikon D5600 124 mm 97 mm 70 mm 465 g 970 n Nov 2016 699 amazon.com
9.
 
Nikon D3400 124 mm 98 mm 76 mm 445 g 1200 n Aug 2016 499ebay.com
10.
 
Nikon D3300 124 mm 98 mm 76 mm 430 g 700 n Jan 2014 499ebay.com
11.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799ebay.com
12.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599ebay.com
13.
 
Nikon D5200 129 mm 98 mm 78 mm 555 g 500 n Nov 2012 749ebay.com
14.
 
Nikon D5100 128 mm 97 mm 79 mm 560 g 660 n Apr 2011 749ebay.com
15.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 5,199ebay.com
16.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499 amazon.com
17.
 
Samsung NX30 127 mm 96 mm 58 mm 375 g 360 n Jan 2014 999ebay.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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D5500 was launched at a markedly lower price (by 91 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 Nikon D5500 features an APS-C sensor and the Pentax 645D a medium format sensor. The sensor area in the 645D is 296 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 0.79. The sensor in the D5500 has a native 3:2 aspect ratio, while the one in the 645D offers a 4:3 aspect.

Nikon D5500 and Pentax 645D sensor measures

With 39.5MP, the 645D offers a higher resolution than the D5500 (24MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 3.91μm for the D5500) due to its larger sensor. However, the D5500 is a much more recent model (by 4 years and 9 months) than the 645D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. 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 Nikon D5500 are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.

The Nikon D5500 has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Pentax 645D are ISO 100 to ISO 1600 (no boost).

In terms of underlying technology, the D5500 is build around a CMOS sensor, while the 645D uses a CCD 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.

D5500 versus 645D 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D5500 APS-C 24.0 6000 40001080/60p24.114.0143884
2.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
3.
 
Canon M5 APS-C 24.0 6000 40001080/60p23.412.4126277
4.
 
Canon 750D APS-C 24.0 6000 40001080/30p22.712.091971
5.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682
6.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
7.
 
Leica S Typ 006 Medium Format 37.5 7500 5000none23.912.282476
8.
 
Nikon D5600 APS-C 24.0 6000 40001080/60p24.114.0130684
9.
 
Nikon D3400 APS-C 24.0 6000 40001080/60p24.813.9119286
10.
 
Nikon D3300 APS-C 24.0 6000 40001080/60p24.312.8138582
11.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
12.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.2113181
13.
 
Nikon D5200 APS-C 24.0 6000 40001080/60i24.213.9128484
14.
 
Nikon D5100 APS-C 16.1 4928 32641080/30p23.513.6118380
15.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
16.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
17.
 
Samsung NX30 APS-C 20.0 5472 36481080/60p23.512.4101476

Many modern cameras are not only capable of taking still images, but can also record movies. The D5500 indeed provides movie recording capabilities, while the 645D does not. The highest resolution format that the D5500 can use is 1080/60p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The D5500 and the 645D are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the 645D offers a wider field of view (98%) than the one in the D5500 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 645D has a higher magnification (0.78x vs 0.57x), 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 Nikon D5500, the Pentax 645D, and comparable cameras.

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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.
 
Nikon D5500optical n3.2 / 1037 swivel Y 1/4000s 5.0/s Y n
2.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1/s n n
3.
 
Canon M52360 n3.2 / 1620 tilting Y 1/4000s 9.0/s Y n
4.
 
Canon 750Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
5.
 
Canon 1D Xoptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
6.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0/s n n
7.
 
Leica S Typ 006optical Y3.0 / 922 fixed n 1/4000s 1.5/s n n
8.
 
Nikon D5600optical n3.2 / 1037 swivel Y 1/4000s 5.0/s Y n
9.
 
Nikon D3400optical n3.0 / 921 fixed n 1/4000s 5.0/s Y n
10.
 
Nikon D3300optical n3.0 / 921 fixed n 1/4000s 5.0/s Y n
11.
 
Nikon D5300optical n3.2 / 1037 swivel n 1/4000s 5.0/s Y n
12.
 
Nikon D3200optical n3.0 / 921 fixed n 1/4000s 4.0/s Y n
13.
 
Nikon D5200optical n3.0 / 921 swivel n 1/4000s 5.0/s Y n
14.
 
Nikon D5100optical n3.0 / 921 swivel n 1/4000s 4.0/s Y n
15.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
16.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
17.
 
Samsung NX302359 n3.0 / 1036 swivel Y 1/8000s 9.0/s Y n
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The D5500 has one, while the 645D does not. While the built-in flash of the D5500 is not very powerful, it can at times be useful as a fill-in light.

The D5500 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the 645D does not have a selfie-screen.

The Nikon D5500 and the Pentax 645D 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 D5500 and the 645D 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 D5500 only has one slot. The D5500 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 Nikon D5500 and Pentax 645D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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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.
 
Nikon D5500Ystereo / monoY-mini2.0Y--
2.
 
Pentax 645DYstereo / ----2.0---
3.
 
Canon M5Ystereo / monoY-mini2.0YYY
4.
 
Canon 750DYstereo / monoY-mini2.0YY-
5.
 
Canon 1D XYmono / -Y-mini2.0---
6.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
7.
 
Leica S Typ 006Y- / ---mini2.0---
8.
 
Nikon D5600Ystereo / monoY-mini2.0YYY
9.
 
Nikon D3400Ymono / mono--mini2.0--Y
10.
 
Nikon D3300Ymono / monoY-mini2.0---
11.
 
Nikon D5300Ystereo / monoY-mini2.0Y--
12.
 
Nikon D3200Ymono / monoY-mini2.0---
13.
 
Nikon D5200Ystereo / monoY-mini2.0---
14.
 
Nikon D5100Ymono / monoY-mini2.0---
15.
 
Nikon D3SYstereo / ---mini2.0---
16.
 
Pentax 645ZYstereo / monoY-mini3.0---
17.
 
Samsung NX30Ystereo / mono--micro2.0YY-

It is notable that the D5500 offers wifi support, while the 645D does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Pentax 645D (unlike the D5500) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D5500 and the 645D have been discontinued, but can regularly be found used on ebay. The 645D was replaced by the Pentax 645Z, while the D5500 was followed by the Nikon D5600. Further information on the features and operation of the D5500 and 645D can be found, respectively, in the Nikon D5500 Manual (free pdf) or the online Pentax 645D Manual.

Review summary

So what is the bottom line? Is there a clear favorite between the Nikon D5500 and the Pentax 645D? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Nikon D5500:

  • More dynamic range: Captures a larger spectrum of light and dark details (1.4 EV of extra DR).
  • Broader imaging potential: Can record not only still images but also 1080/60p movies.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 921k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (5 vs 1.1 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (124x97mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 1010g or 68 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • 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 (91 percent cheaper at launch).
  • More modern: Reflects 4 years and 9 months of technical progress since the 645D launch.

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Arguments in favor of the Pentax 645D:

  • More detail: Has more megapixels (39.5 vs 24MP), which boosts linear resolution by 26%.
  • More complete view: Has a viewfinder with a larger field of view (98% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.57x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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 around for much longer (launched in March 2010).

If the count of relative strengths (bullet points above) is taken as a measure, the D5500 is the clear winner of the match-up (15 : 8 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.

D5500 15:08 645D

How about other alternatives? Do the specifications of the Nikon D5500 and the Pentax 645D place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the D5500 and the 645D in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D55005/5+..79/1004.5/54.5/5 Jan 2015 899ebay.com
2.
 
Pentax 645D5/5.......... Mar 2010 9,995ebay.com
3.
 
Canon M54/5+4/582/1004/54/5 Sep 2016 979ebay.com
4.
 
Canon 750D5/5....75/1004.5/54.5/5 Feb 2015 749ebay.com
5.
 
Canon 1D X5/5......4.5/54.5/5 Oct 2011 6,799ebay.com
6.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 4,999ebay.com
7.
 
Leica S Typ 006............ Sep 2012 21,950ebay.com
8.
 
Nikon D56004/5..4/579/1004.5/54/5 Nov 2016 699 amazon.com
9.
 
Nikon D34004/5+4/576/1004/54.5/5 Aug 2016 499ebay.com
10.
 
Nikon D33003/5+..77/1004.5/54.5/5 Jan 2014 499ebay.com
11.
 
Nikon D53004/5+ +..79/1004.5/54.5/5 Oct 2013 799ebay.com
12.
 
Nikon D32005/5+ +..73/1004.5/54.5/5 Apr 2012 599ebay.com
13.
 
Nikon D52004/5+ +..79/1004.5/54.5/5 Nov 2012 749ebay.com
14.
 
Nikon D51005/5+ +..76/1004.5/54.5/5 Apr 2011 749ebay.com
15.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 5,199ebay.com
16.
 
Pentax 645Z5/5..3.5/5..4.5/55/5 Apr 2014 8,499 amazon.com
17.
 
Samsung NX303/5....77/1004.5/54.5/5 Jan 2014 999ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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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 use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Nikon D5500 vs Pentax 645D

    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 Nikon D5500 Pentax 645D
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Nikon F mount lenses Pentax 645 mount lenses
    Launch Date January 2015 March 2010
    Launch Price USD 899 USD 9,995
    Sensor Specs Nikon D5500 Pentax 645D
    Sensor Technology CMOS CCD
    Sensor Format APS-C Sensor Medium Format Sensor
    Sensor Size 23.5 x 15.6 mm 44.0 x 33.0 mm
    Sensor Area 366.6 mm2 1452 mm2
    Sensor Diagonal 28.2 mm 55 mm
    Crop Factor 1.5x 0.79x
    Sensor Resolution 24 Megapixels 39.5 Megapixels
    Image Resolution 6000 x 4000 pixels 7264 x 5440 pixels
    Pixel Pitch 3.91 μm 6.06 μm
    Pixel Density 6.55 MP/cm2 2.72 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 1080/60p Video no Video
    ISO Setting 100 - 25,600 ISO 100 - 1,600 ISO
    Image Processor EXPEED 4 PRIME II
    DXO Sensor Quality (score) 84 82
    DXO Color Depth (bits) 24.1 24.6
    DXO Dynamic Range (EV) 14.0 12.6
    DXO Low Light (ISO) 1438 1262
    Screen Specs Nikon D5500 Pentax 645D
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 98%
    Viewfinder Magnification 0.57x 0.78x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1037k dots 921k dots
    LCD Attachment Swivel screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Nikon D5500 Pentax 645D
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 5 shutter flaps/s 1.1 shutter flaps/s
    Shutter Life Expectancy100 000 actuations50 000 actuations
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-I no
    Connectivity Specs Nikon D5500 Pentax 645D
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI no HDMI
    Microphone Port External MIC port no MIC socket
    Wifi Support Wifi built-in no Wifi
    Body Specs Nikon D5500 Pentax 645D
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type EN-EL14a D-LI90
    Battery Life (CIPA)820 shots per charge800 shots per charge
    Body Dimensions 124 x 97 x 70 mm
    (4.9 x 3.8 x 2.8 in)
    156 x 117 x 119 mm
    (6.1 x 4.6 x 4.7 in)
    Camera Weight 470 g (16.6 oz) 1480 g (52.2 oz)
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