A potelyt.com – Photography & Imaging Resources
ad

When you use links on apotelyt.com to buy products,
the site may earn a commission.

PW

Pentax 645D vs Sony RX1R II

The Pentax 645D and the Sony Cyber-shot DSC-RX1R II are two digital cameras that were revealed to the public, respectively, in March 2010 and October 2015. The 645D is a DSLR, while the RX1R II is a fixed lens compact. The cameras are based on a medium format (645D) and a full frame (RX1R II) sensor. The Pentax has a resolution of 39.5 megapixels, whereas the Sony provides 42.2 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 RX1R II
Pentax 645D   Sony RX1R II
Digital single lens reflex Fixed lens compact camera
Pentax 645 mount lenses 35mm f/2.0
39.5 MP – Medium Format sensor 42.2 MP – Full Frame sensor
no Video 1080/60p Video
ISO 100-1,600 ISO 100-25,600 (50 - 102,400)
Optical viewfinder Electronic viewfinder (2360k dots)
3.0" LCD – 921k dots 3.0" LCD – 1229k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
1.1 shutter flaps per second 5 shutter flaps per second
Weathersealed bodynot weather sealed
800 shots per battery charge220 shots per battery charge
156 x 117 x 119 mm, 1480 g 113 x 65 x 72 mm, 507 g
logo
Check 645D offers at
ebay.com
logo
Check RX1R II offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax 645D and the Sony Cyber-shot DSC-RX1R II? 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.

ad

Body comparison

An illustration of the physical size and weight of the Pentax 645D and the Sony RX1R II 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 size dimensions are rounded to the nearest millimeter.

Size Pentax 645D vs Sony RX1R II
Compare 645D versus RX1R II top
Comparison 645D or RX1R II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX1R II is considerably smaller (60 percent) than the Pentax 645D. It is worth mentioning in this context that the 645D is splash and dust resistant, while the RX1R II does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX1R II has a lens built in, whereas the 645D is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.

Concerning battery life, the 645D gets 800 shots out of its Pentax D-LI90 battery, while the RX1R II can take 220 images on a single charge of its Sony NP-BX1 power pack. The power pack in the RX1R II 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. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

scroll hint
Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 US$ 9 995ebay.com
2.
 
Sony RX1R II 113 mm 65 mm 72 mm 507 g 220 n Oct 2015 US$ 3 299ebay.com
3.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 US$ 4 999ebay.com
4.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 US$ 6 799ebay.com
5.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 US$ 5 999ebay.com
6.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 US$ 3 699ebay.com
7.
 
Leica S Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2012 US$ 21 949ebay.com
8.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 US$ 5 199ebay.com
9.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 US$ 6 499ebay.com
10.
 
Nikon D810 146 mm 123 mm 82 mm 980 g 1200 Y Jun 2014 US$ 3 299ebay.com
11.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 US$ 3 299 amazon.com
12.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 US$ 8 499ebay.com
13.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 US$ 2 299ebay.com
14.
 
Sony H300 128 mm 89 mm 92 mm 590 g 350 n Feb 2014 US$ 219ebay.com
15.
 
Sony RX1 113 mm 65 mm 70 mm 482 g 270 n Sep 2012 US$ 2 799ebay.com
16.
 
Sony RX1R 113 mm 65 mm 70 mm 482 g 270 n Jun 2013 US$ 2 799ebay.com
17.
 
Sony RX100 IV 102 mm 58 mm 41 mm 298 g 280 n Jun 2015 US$ 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 RX1R II was launched at a lower price than the 645D, despite having a lens built in. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units 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 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 RX1R II a full frame sensor. The sensor area in the RX1R II is 41 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 1.0. The sensor in the 645D has a native 4:3 aspect ratio, while the one in the RX1R II offers a 3:2 aspect.

Pentax 645D and Sony RX1R II sensor measures

Despite having a smaller sensor, the RX1R II offers a slightly higher resolution of 42.2 megapixels, compared with 39.5 MP of the 645D. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.50μm versus 6.06μm for the 645D). However, it should be noted that the RX1R II is much more recent (by 5 years and 7 months) than the 645D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. 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 Sony RX1R II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX1R II for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inches or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inches or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inches or 67.3 x 44.9 cm. The corresponding values for the Pentax 645D are 36.3 x 27.2 inches or 92.3 x 69.1 cm for good quality, 29.1 x 21.8 inches or 73.8 x 55.3 cm for very good quality, and 24.2 x 18.1 inches or 61.5 x 46.1 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 Cyber-shot DSC-RX1R II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

In terms of underlying technology, the 645D is build around a CCD sensor, while the RX1R II 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 RX1R II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under consideration, the RX1R II offers substantially better image quality than the 645D (overall score 15 points higher). The advantage is based on 1.2 bits higher color depth, 1.3 EV in additional dynamic range, and 1.3 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

scroll hint
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.
 
Sony RX1R II Full Frame 42.2 7952 53041080/60p25.813.9320497
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.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
7.
 
Leica S Typ 006 Medium Format 37.5 7500 5000none23.912.282476
8.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
9.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
10.
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397
11.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
12.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
13.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
14.
 
Sony H300 1/2.3 19.9 5152 3864720/30p20.111.463045
15.
 
Sony RX1 Full Frame 24.0 6000 40001080/60p25.114.3253493
16.
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791
17.
 
Sony RX100 IV 1-inch 20.0 5472 36484K/30p22.812.659170
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 can also record movies. The RX1R II indeed provides for movie recording, while the 645D does not. The highest resolution format that the RX1R II can use is 1080/60p.

ad

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the RX1R II 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 RX1R II 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 0.74x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Pentax 645D and Sony RX1R II in connection with corresponding information for a sample of similar cameras.

scroll hint
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.
 
Sony RX1R II2360 n3.0 / 1229 tilting n 1/4000s 5.0/s n 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.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
7.
 
Leica S Typ 006optical Y3.0 / 922 fixed n 1/4000s 1.5/s n n
8.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
9.
 
Nikon D5optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
10.
 
Nikon D810optical Y3.2 / 1229 fixed n 1/8000s 5.0/s Y n
11.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
12.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
13.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
14.
 
Sony H300none n3.0 / 460 fixed n 1/1500s 0.8/s Y Y
15.
 
Sony RX1optional n3.0 / 1229 fixed n 1/4000s 5.0/s Y n
16.
 
Sony RX1Roptional n3.0 / 1229 fixed n 1/4000s 5.0/s Y n
17.
 
Sony RX100 IV2359 n3.0 / 1228 tilting n 1/2000s 16.0/s Y Y
Note: *) 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 RX1R II 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 RX1R II 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 RX1R II only has one slot. The RX1R II 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.

ad

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 Cyber-shot DSC-RX1R II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

scroll hint
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.
 
Sony RX1R IIYstereo / monoY-micro2.0YY-
3.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
4.
 
Canon 1D XYmono / -Y-mini2.0---
5.
 
Canon 1D X Mark IIYmono / monoYYmini3.0---
6.
 
Canon 5DSYmono / monoY-mini3.0---
7.
 
Leica S Typ 006Y- / ---mini2.0---
8.
 
Nikon D3SYstereo / ---mini2.0---
9.
 
Nikon D5Ystereo / monoYYmini3.0---
10.
 
Nikon D810Ystereo / monoYYmini3.0Y--
11.
 
Nikon D850Ystereo / monoYYmini3.0YYY
12.
 
Pentax 645ZYstereo / monoY-mini3.0---
13.
 
Sony A7RYstereo / monoYYmicro2.0YY-
14.
 
Sony H300-mono / mono--micro2.0Y--
15.
 
Sony RX1Ystereo / monoY-mini2.0---
16.
 
Sony RX1RYstereo / monoY-mini2.0---
17.
 
Sony RX100 IV-stereo / mono--micro2.0YY-

It is notable that the RX1R II 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 RX1R II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 645D and the RX1R II have been discontinued, but can regularly be found used on ebay. The 645D was replaced by the Pentax 645Z, while the RX1R II does not have a direct successor. Further information on the features and operation of the 645D and RX1R II can be found, respectively, in the Pentax 645D Manual (free pdf) or the online Sony RX1R II Manual.

ad

Review summary

So how do things add up? Is there a clear favorite between the Pentax 645D and the Sony RX1R II? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

ilogo

Advantages of the Pentax 645D:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.74x).
  • 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.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (800 versus 220) 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

Reasons to prefer the Sony Cyber-shot DSC-RX1R II:

  • More detail: Has more megapixels (42.2 vs 39.5MP), which boosts linear resolution by 5%.
  • Better image quality: Scores substantially higher (15 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.2 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.3 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.3 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 1080/60p 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 detailed LCD: Has a higher resolution rear screen (1229k vs 921k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster burst: Shoots at higher frequency (5 vs 1.1 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Comes with an integrated lens, while the 645D requires a separate lens.
  • More compact: Is smaller (113x65mm vs 156x117mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the 645D).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Reflects 5 years and 7 months of technical progress since the 645D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the RX1R II is the clear winner of the contest (20 : 10 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

645D 10:20 RX1R II

How about other alternatives? Do the specifications of the Pentax 645D and the Sony RX1R II place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Prime Lens Compact Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the 645D and the RX1R II in practical situations. 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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Pentax 645D5/5.......... Mar 2010 US$ 9 995ebay.com
2.
 
Sony RX1R II5/5....82/100..4.5/5 Oct 2015 US$ 3 299ebay.com
3.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 US$ 4 999ebay.com
4.
 
Canon 1D X5/5......4.5/54.5/5 Oct 2011 US$ 6 799ebay.com
5.
 
Canon 1D X Mark II....4.5/589/1004.5/54.5/5 Feb 2016 US$ 5 999ebay.com
6.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 US$ 3 699ebay.com
7.
 
Leica S Typ 006............ Sep 2012 US$ 21 949ebay.com
8.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 US$ 5 199ebay.com
9.
 
Nikon D5....4/589/1004.5/55/5 Jan 2016 US$ 6 499ebay.com
10.
 
Nikon D8105/5..5/586/1005/54.5/5 Jun 2014 US$ 3 299ebay.com
11.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 US$ 3 299 amazon.com
12.
 
Pentax 645Z5/5..3.5/5..4.5/55/5 Apr 2014 US$ 8 499ebay.com
13.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 US$ 2 299ebay.com
14.
 
Sony H300..+....4.5/54/5 Feb 2014 US$ 219ebay.com
15.
 
Sony RX15/5....79/1004/54.5/5 Sep 2012 US$ 2 799ebay.com
16.
 
Sony RX1R5/5......4/54.5/5 Jun 2013 US$ 2 799ebay.com
17.
 
Sony RX100 IV4.5/5+ +..85/1004/54.5/5 Jun 2015 US$ 999ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price 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.

logo
Check 645D offers at
ebay.com
logo
Check RX1R II offers at
ebay.com

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

~
    loader
    ad

    Specifications: Pentax 645D vs Sony RX1R II

    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 RX1R II
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Pentax 645 mount lenses 35mm f/2.0
    Launch Date March 2010 October 2015
    Launch Price USD 9,995 USD 3,299
    Sensor Specs Pentax 645D Sony RX1R II
    Sensor Technology CCD BSI-CMOS
    Sensor Format Medium Format Sensor Full Frame Sensor
    Sensor Size 44.0 x 33.0 mm 35.8 x 23.9 mm
    Sensor Area 1452 mm2 855.62 mm2
    Sensor Diagonal 55 mm 43 mm
    Crop Factor 0.79x 1.0x
    Sensor Resolution 39.5 Megapixels 42.2 Megapixels
    Image Resolution 7264 x 5440 pixels 7952 x 5304 pixels
    Pixel Pitch 6.06 μm 4.50 μm
    Pixel Density 2.72 MP/cm2 4.93 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 100 - 1,600 ISO 100 - 25,600 ISO
    ISO Boost no Enhancement 50 - 102,400 ISO
    Image Processor PRIME II BIONZ X
    DXO Sensor Quality (score) 82 97
    DXO Color Depth (bits) 24.6 25.8
    DXO Dynamic Range (EV) 12.6 13.9
    DXO Low Light (ISO) 1262 3204
    Screen Specs Pentax 645D Sony RX1R II
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 98% 100%
    Viewfinder Magnification 0.78x 0.74x
    Viewfinder Resolution 2360k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 1229k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Pentax 645D Sony RX1R II
    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 5 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash no On-Board Flash no On-Board 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 RX1R II
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Pentax 645D Sony RX1R II
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type Pentax D-LI90 Sony NP-BX1
    Battery Life (CIPA)800 shots per charge220 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)
    113 x 65 x 72 mm
    (4.4 x 2.6 x 2.8 in)
    Camera Weight 1480 g (52.2 oz) 507 g (17.9 oz)
    logo
    Check 645D offers at
    ebay.com
    logo
    Check RX1R II 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 RX1R II