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Pentax MX-1 vs Sony A99 II

The Pentax MX-1 and the Sony Alpha ALT-A99 II are two digital cameras that were revealed to the public, respectively, in January 2013 and September 2016. The MX-1 is a fixed lens compact, while the A99 II is a DSLR. The cameras are based on a 1/1.7-inch (MX-1) and a full frame (A99 II) sensor. The Pentax has a resolution of 12 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 MX-1
versus
Sony A99 II
Pentax MX-1   Sony A99 II
Fixed lens compact camera Digital single lens reflex
28-112mm f/1.8-2.5 Sony A mount lenses
12 MP – 1/1.7" sensor 42.2 MP – Full Frame sensor
1080/30p Video 4K/30p Video
ISO 100-12,800 ISO 100-25,600
No viewfinder, LCD framing Electronic viewfinder (2400k dots)
3.0" LCD – 920k dots 3.0" LCD – 1229k dots
Tilting screen (no touchscreen) Fully flexible screen (no touchscreen)
1 shutter flaps per second 12 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
290 shots per battery charge490 shots per battery charge
122 x 61 x 51 mm, 391 g 143 x 104 x 76 mm, 849 g
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Check MX-1 offers at
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Check A99 II offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax MX-1 and the Sony Alpha ALT-A99 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.

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Body comparison

The physical size and weight of the Pentax MX-1 and the Sony A99 II 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 MX-1 vs Sony A99 II
Compare MX-1 versus A99 II top
Comparison MX-1 or A99 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A99 II is considerably larger (100 percent) than the Pentax MX-1. It is noteworthy in this context that the A99 II is splash and dust-proof, while the MX-1 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the MX-1 has a lens built in, whereas the A99 II is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax MX-1 122 mm 61 mm 51 mm 391 g 290 n Jan 2013 499ebay.com
2.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199ebay.com
3.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
4.
 
Canon G16 109 mm 76 mm 40 mm 356 g 360 n Aug 2013 549ebay.com
5.
 
Canon S120 100 mm 59 mm 29 mm 217 g 230 n Aug 2013 449ebay.com
6.
 
Canon G15 107 mm 76 mm 40 mm 352 g 350 n Sep 2012 499ebay.com
7.
 
Fujifilm X30 119 mm 72 mm 60 mm 423 g 470 n Aug 2014 599ebay.com
8.
 
Fujifilm X20 117 mm 70 mm 57 mm 353 g 270 n Jan 2013 599ebay.com
9.
 
Fujifilm X10 117 mm 70 mm 57 mm 350 g 270 n Sep 2011 599ebay.com
10.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 amazon.com
11.
 
Nikon P7800 119 mm 78 mm 50 mm 399 g 350 n Sep 2013 549ebay.com
12.
 
Olympus Stylus 1 116 mm 87 mm 57 mm 402 g 410 n Oct 2013 699ebay.com
13.
 
Olympus XZ-2 113 mm 65 mm 48 mm 346 g 340 n Sep 2012 599ebay.com
14.
 
Panasonic LF1 103 mm 62 mm 28 mm 192 g 250 n Apr 2013 499ebay.com
15.
 
Sony A7R IIIA 127 mm 96 mm 74 mm 650 g 650 Y Apr 2021 3,199 amazon.com
16.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199ebay.com
17.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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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 MX-1 was launched at a lower price than the A99 II, despite having a lens built in. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Pentax MX-1 features a 1/1.7-inch sensor and the Sony A99 II a full frame sensor. The sensor area in the A99 II is 1905 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 4.5 and 1.0. The sensor in the MX-1 has a native 4:3 aspect ratio, while the one in the A99 II offers a 3:2 aspect.

Pentax MX-1 and Sony A99 II sensor measures

With 42.2MP, the A99 II offers a higher resolution than the MX-1 (12MP), but the A99 II nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 1.89μm for the MX-1) due to its larger sensor. Moreover, the A99 II is a much more recent model (by 3 years and 8 months) than the MX-1, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the A99 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A99 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A99 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 MX-1 are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 cm for excellent quality prints.

The A99 II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Pentax MX-1 has a native sensitivity range from ISO 100 to ISO 12800. The corresponding ISO settings for the Sony Alpha ALT-A99 II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-25600.

In terms of underlying technology, the MX-1 is build around a CMOS sensor, while the A99 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.

MX-1 versus A99 II MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the A99 II offers substantially better image quality than the MX-1 (overall score 43 points higher). The advantage is based on 5 bits higher color depth, 2.1 EV in additional dynamic range, and 3.5 stops in additional low light sensitivity. 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Pentax MX-1 1/1.7 12.0 4000 30001080/30p20.411.320849
2.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
3.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
4.
 
Canon G16 1/1.7 12.0 4000 30001080/60p21.011.723054
5.
 
Canon S120 1/1.7 12.0 4000 30001080/60p21.311.924656
6.
 
Canon G15 1/1.7 12.0 4000 30001080/24p19.911.516546
7.
 
Fujifilm X30 2/3 12.0 4000 30001080/60p20.411.2-31249
8.
 
Fujifilm X20 2/3 12.0 4000 30001080/60p20.110.9-46246
9.
 
Fujifilm X10 2/3 12.0 4000 30001080/30p20.511.324550
10.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
11.
 
Nikon P7800 1/1.7 12.0 4000 30001080/30p21.211.720054
12.
 
Olympus Stylus 1 1/1.7 11.8 3968 29761080/30p20.711.617951
13.
 
Olympus XZ-2 1/1.7 11.8 3968 29761080/30p20.411.321649
14.
 
Panasonic LF1 1/1.7 12.0 4000 30001080/60i20.811.621152
15.
 
Sony A7R IIIA Full Frame 42.2 7952 53044K/30p26.014.73523100
16.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
17.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A99 II provides a better video resolution than the MX-1. It can shoot movie footage at 4K/30p, while the Pentax is limited to 1080/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A99 II has an electronic viewfinder (2400k dots), which can be very helpful when shooting in bright sunlight. In contrast, the MX-1 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Pentax MX-1 and Sony A99 II in connection with corresponding information for a sample of similar cameras.

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Core Features
# image 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 MX-1none n3.0 / 920 tilting n 1/8000s 1.0/s Y Y
2.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
3.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
4.
 
Canon G16optical n3.0 / 922 fixed n 1/4000s 2.2/s Y Y
5.
 
Canon S120none n3.0 / 922 fixed Y 1/2000s 12.1/s Y Y
6.
 
Canon G15optical n3.0 / 922 fixed n 1/4000s 2.1/s Y Y
7.
 
Fujifilm X302360 n3.0 / 920 tilting n 1/4000s 12.0/s Y Y
8.
 
Fujifilm X20optical n2.8 / 460 fixed n 1/4000s 12.0/s Y Y
9.
 
Fujifilm X10optical n2.8 / 460 fixed n 1/4000s 10.0/s Y Y
10.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
11.
 
Nikon P7800921 n3.0 / 921 swivel n 1/4000s 8.0/s Y Y
12.
 
Olympus Stylus 11440 n3.0 / 1040 tilting Y 1/2000s 7.0/s Y Y
13.
 
Olympus XZ-2optional n3.0 / 920 tilting Y 1/2000s 5.0/s Y Y
14.
 
Panasonic LF1200 n3.0 / 920 fixed n 1/4000s 10.0/s Y Y
15.
 
Sony A7R IIIA3686 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
16.
 
Sony A7R II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
17.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One difference between the cameras concerns the presence of an on-board flash. The MX-1 has one, while the A99 II does not. While the built-in flash of the MX-1 is not very powerful, it can at times be useful as a fill-in light.

The A99 II has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the MX-1 does not have a selfie-screen.

The MX-1 writes its imaging data to SDXC cards, while the A99 II uses SDXC or Memory Stick PRO Duo cards. The A99 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the MX-1 only has one slot. The A99 II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the MX-1 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 MX-1 and Sony Alpha ALT-A99 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Pentax MX-1-stereo / mono--mini2.0---
2.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
3.
 
Canon 5DS RYmono / monoY-mini3.0---
4.
 
Canon G16Ystereo / mono--mini2.0Y--
5.
 
Canon S120-stereo / mono--mini2.0Y--
6.
 
Canon G15Ystereo / mono--mini2.0---
7.
 
Fujifilm X30Ystereo / mono--micro2.0Y--
8.
 
Fujifilm X20Ystereo / mono--micro2.0---
9.
 
Fujifilm X10Ystereo / mono--mini2.0---
10.
 
Nikon D850Ystereo / monoYYmini3.0YYY
11.
 
Nikon P7800Ystereo / monoY-mini2.0---
12.
 
Olympus Stylus 1Ystereo / mono--micro2.0Y--
13.
 
Olympus XZ-2Ystereo / mono--mini2.0---
14.
 
Panasonic LF1-stereo / mono--mini2.0YY-
15.
 
Sony A7R IIIAYstereo / monoYYmicro3.2YYY
16.
 
Sony A7R IIYstereo / monoYYmicro2.0YY-
17.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
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It is notable that the A99 II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the MX-1 does not provide wifi capability.

Studio photographers will appreciate that the Sony A99 II (unlike the MX-1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the MX-1 and the A99 II have been discontinued, but can regularly be found used on ebay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Pentax and Sony. Further information on the features and operation of the MX-1 and A99 II can be found, respectively, in the Pentax MX-1 Manual (free pdf) or the online Sony A99 II Manual.

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Review summary

So how do things add up? Is the Pentax MX-1 better than the Sony A99 II or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Pentax MX-1:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Ready to shoot: Comes with a built-in lens, while the A99 II requires a separate lens.
  • More compact: Is smaller (122x61mm vs 143x104mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the A99 II).
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More heavily discounted: Has been available for much longer (launched in January 2013).

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Advantages of the Sony Alpha ALT-A99 II:

  • More detail: Has more megapixels (42.2 vs 12MP), which boosts linear resolution by 91%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (43 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (5 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (2.1 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (3.5 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 920k dots).
  • More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (12 vs 1 flaps/sec) to capture the decisive moment.
  • More flexible: Makes it possible to change lenses and thus to use specialty optics.
  • Longer lasting: Gets more shots (490 versus 290) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • 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.
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 3 years and 8 months of technical progress since the MX-1 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A99 II is the clear winner of the contest (27 : 7 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

MX-1 07:27 A99 II

How about other alternatives? Do the specifications of the Pentax MX-1 and the Sony A99 II place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best DSLR 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 remains incomplete and does no justice, for example, to the way the MX-1 or the A99 II perform in practice. 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 why expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax MX-13/5....74/1004/54/5 Jan 2013 499ebay.com
2.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199ebay.com
3.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699ebay.com
4.
 
Canon G164/5+....4.5/54.5/5 Aug 2013 549ebay.com
5.
 
Canon S120..+ +....4.5/54.5/5 Aug 2013 449ebay.com
6.
 
Canon G154/5+..76/1004.5/54.5/5 Sep 2012 499ebay.com
7.
 
Fujifilm X304/5....76/1004.5/54.5/5 Aug 2014 599ebay.com
8.
 
Fujifilm X204/5+ +..77/1004.5/55/5 Jan 2013 599ebay.com
9.
 
Fujifilm X10......76/1004/54.5/5 Sep 2011 599ebay.com
10.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 3,299 amazon.com
11.
 
Nikon P78003/5......4/54.5/5 Sep 2013 549ebay.com
12.
 
Olympus Stylus 1..+ +....4.5/54.5/5 Oct 2013 699ebay.com
13.
 
Olympus XZ-24/5+....4.5/54.5/5 Sep 2012 599ebay.com
14.
 
Panasonic LF13/5+....4/54.5/5 Apr 2013 499ebay.com
15.
 
Sony A7R IIIA..+ +4/590/1004.5/55/5 Apr 2021 3,199 amazon.com
16.
 
Sony A7R II5/5+ +5/590/1005/55/5 Jun 2015 3,199ebay.com
17.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. 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 a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Pentax MX-1 vs Sony A99 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 MX-1 Sony A99 II
    Camera Type Fixed lens compact camera Digital single lens reflex
    Camera Lens 28-112mm f/1.8-2.5 Sony A mount lenses
    Launch Date January 2013 September 2016
    Launch Price USD 499 USD 3,199
    Sensor Specs Pentax MX-1 Sony A99 II
    Sensor Technology CMOS BSI-CMOS
    Sensor Format 1/1.7" Sensor Full Frame Sensor
    Sensor Size 7.6 x 5.7 mm 35.9 x 24.0 mm
    Sensor Area 43.32 mm2 861.6 mm2
    Sensor Diagonal 9.5 mm 43.2 mm
    Crop Factor 4.5x 1.0x
    Sensor Resolution 12 Megapixels 42.2 Megapixels
    Image Resolution 4000 x 3000 pixels 7952 x 5304 pixels
    Pixel Pitch 1.89 μm 4.52 μm
    Pixel Density 27.70 MP/cm2 4.90 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/30p Video 4K/30p Video
    ISO Setting 100 - 12,800 ISO 100 - 25,600 ISO
    ISO Boost no Enhancement 50 - 25,600 ISO
    DXO Sensor Quality (score) 49 92
    DXO Color Depth (bits) 20.4 25.4
    DXO Dynamic Range (EV) 11.3 13.4
    DXO Low Light (ISO) 208 2317
    Screen Specs Pentax MX-1 Sony A99 II
    Viewfinder Type no viewfinder Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.78x
    Viewfinder Resolution 2400k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 920k dots 1229k dots
    LCD Attachment Tilting screen Fully flexible screen
    Shooting Specs Pentax MX-1 Sony A99 II
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 1 shutter flaps/s 12 shutter flaps/s
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support no UHS-I
    Connectivity Specs Pentax MX-1 Sony A99 II
    External Flash no Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini 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 MX-1 Sony A99 II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Pentax D-LI106 Sony NP-FM500H
    Battery Life (CIPA)290 shots per charge490 shots per charge
    Body Dimensions 122 x 61 x 51 mm
    (4.8 x 2.4 x 2.0 in)
    143 x 104 x 76 mm
    (5.6 x 4.1 x 3.0 in)
    Camera Weight 391 g (13.8 oz) 849 g (29.9 oz)
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    Check MX-1 offers at
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    Check A99 II offers at
    ebay.com

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