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Sony A99 II vs RX100

The Sony Alpha ALT-A99 II and the Sony Cyber-shot DSC-RX100 are two digital cameras that were officially introduced, respectively, in September 2016 and June 2012. The A99 II is a DSLR, while the RX100 is a fixed lens compact. The cameras are based on a full frame (A99 II) and an one-inch (RX100) sensor. The A99 II has a resolution of 42.2 megapixels, whereas the RX100 provides 20 MP.

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

Headline Specifications
Sony A99 II
versus
Sony RX100
Sony A99 II   Sony RX100
Digital single lens reflex Fixed lens compact camera
Sony A mount lenses 28-100mm f/1.8-4.9
42.2 MP – Full Frame sensor 20 MP – 1" sensor
4K/30p Video 1080/60p Video
ISO 100-25,600 ISO 100-6,400 (100 - 25,600)
Electronic viewfinder (2400k dots) No viewfinder, LCD framing
3.0" LCD – 1229k dots 3.0" LCD – 1229k dots
Fully flexible screen (no touchscreen) Fixed screen (not touch-sensitive)
12 shutter flaps per second 10 shutter flaps per second
In-body stabilizationLens-based stabilization
Weathersealed bodynot weather sealed
490 shots per battery charge330 shots per battery charge
143 x 104 x 76 mm, 849 g 102 x 58 x 36 mm, 240 g
Sony A99 II:
Check Amazon price
Sony RX100:
Check Ebay offers

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha ALT-A99 II and the Sony Cyber-shot DSC-RX100? 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 Sony A99 II and the Sony RX100 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

Size Sony A99 II vs Sony RX100
Compare A99 II versus RX100 top
Comparison A99 II or RX100 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX100 is considerably smaller (60 percent) than the Sony A99 II. It is worth mentioning in this context that the A99 II is splash and dust resistant, while the RX100 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 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.

Concerning battery life, the A99 II gets 490 shots out of its NP-FM500H battery, while the RX100 can take 330 images on a single charge of its NP-BX1 power pack. The power pack in the RX100 can be charged via the USB port, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you 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.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i
2.
 
Sony RX100 102 mm 58 mm 36 mm 240 g 330 n Jun 2012 649i
3.
 
Canon G9 X Mark II 98 mm 58 mm 31 mm 206 g 235 n Jan 2017 529 i
4.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
5.
 
Canon G9 X 98 mm 58 mm 31 mm 209 g 220 n Oct 2015 529i
6.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 i
7.
 
Panasonic S1R 149 mm 110 mm 97 mm 1016 g 380 Y Feb 2019 3,699 i
8.
 
Pentax K-1 137 mm 110 mm 86 mm 1010 g 760 Y Feb 2016 1,799i
9.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199i
10.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199i
11.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999i
12.
 
Sony RX100 III 102 mm 58 mm 41 mm 290 g 320 n May 2014 799i
13.
 
Sony RX10 129 mm 88 mm 102 mm 813 g 420 Y Oct 2013 1,299i
14.
 
Sony RX100 II 102 mm 58 mm 38 mm 281 g 350 n Jun 2013 749i
15.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799i
16.
 
Sony A850 156 mm 117 mm 82 mm 895 g 880 Y Aug 2009 1,999i
17.
 
Sony A900 156 mm 117 mm 82 mm 895 g 880 Y Sep 2008 2,999i
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The 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 RX100 was launched at a lower price than the A99 II, 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.

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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Sony A99 II features a full frame sensor and the Sony RX100 an one-inch sensor. The sensor area in the RX100 is 87 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony A99 II and Sony RX100 sensor measures

With 42.2MP, the A99 II offers a higher resolution than the RX100 (20MP), but the A99 II nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 2.41μm for the RX100) due to its larger sensor. Moreover, the A99 II is a much more recent model (by 4 years and 3 months) than the RX100, 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 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 Sony RX100 are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 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 Sony Alpha ALT-A99 II has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 50-25600. The corresponding ISO settings for the Sony Cyber-shot DSC-RX100 are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 100-25600.

A99 II versus RX100 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 review, the A99 II provides substantially higher image quality than the RX100, with an overall score that is 26 points higher. This advantage is based on 2.8 bits higher color depth, 1 EV in additional dynamic range, and 2.6 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.

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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.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
2.
 
Sony RX100 1-inch 20.0 5472 36481080/60p22.612.439066
3.
 
Canon G9 X Mark II 1-inch 20.0 5472 36481080/60p21.912.552265
4.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
5.
 
Canon G9 X 1-inch 20.0 5472 36481080/60p21.512.349563
6.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
7.
 
Panasonic S1R Full Frame 46.7 8368 55844K/60p26.414.13525100
8.
 
Pentax K-1 Full Frame 36.2 7360 49121080/60i25.414.6328096
9.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
10.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
11.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
12.
 
Sony RX100 III 1-inch 20.0 5472 36481080/60p22.412.349567
13.
 
Sony RX10 1-inch 20.0 5472 36481080/60p22.912.647469
14.
 
Sony RX100 II 1-inch 20.0 5472 36481080/60p22.512.448367
15.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
16.
 
Sony A850 Full Frame 24.4 6048 4032none23.812.2141579
17.
 
Sony A900 Full Frame 24.4 6048 4032none23.712.3143179

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A99 II provides a higher video resolution than the RX100. It can shoot video footage at 4K/30p, while the RX100 is limited to 1080/60p.

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 RX100 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Sony A99 II and Sony RX100 along with similar information for a selection of comparators.

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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.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
2.
 
Sony RX100none n3.0 / 1229 fixed n 1/2000s 10.0/s Y Y
3.
 
Canon G9 X Mark IInone n3.0 / 1040 fixed Y 1/2000s 8.2/s Y Y
4.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
5.
 
Canon G9 Xnone n3.0 / 1040 fixed Y 1/2000s 6.0/s Y Y
6.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
7.
 
Panasonic S1R5760 Y3.2 / 2100 full-flex Y 1/8000s 9.0/s n Y
8.
 
Pentax K-1optical Y3.2 / 1037 full-flex n 1/8000s 4.4/s n Y
9.
 
Sony A7R III3686 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
10.
 
Sony A7R II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
11.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
12.
 
Sony RX100 III1440 n3.0 / 1229 tilting n 1/2000s 10.0/s Y Y
13.
 
Sony RX101440 Y3.0 / 1229 tilting n 1/3200s 10.0/s Y Y
14.
 
Sony RX100 IIoptional n3.0 / 1229 tilting n 1/2000s 10.0/s Y Y
15.
 
Sony A992359 Y3.0 / 1229 full-flex n 1/8000s 6.0/s n Y
16.
 
Sony A850optical Y3.0 / 922 fixed n 1/8000s 3.0/s n Y
17.
 
Sony A900optical Y3.0 / 922 fixed n 1/8000s 5.0/s n Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the A99 II, but is missing on the RX100 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 A99 II 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 RX100 does not have a selfie-screen.

Concerning the storage of imaging data, both the A99 II and the RX100 write their files to 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 RX100 only has one slot. The A99 II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the RX100 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 Sony Alpha ALT-A99 II and Sony Cyber-shot DSC-RX100 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.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
2.
 
Sony RX100-stereo / mono--micro2.0---
3.
 
Canon G9 X Mark II-stereo / mono--micro2.0YYY
4.
 
Canon 5DS RYmono / monoY-mini3.0---
5.
 
Canon G9 X-stereo / mono--micro2.0YY-
6.
 
Nikon D850Ystereo / monoYYmini3.0YYY
7.
 
Panasonic S1RYstereo / monoYYfull3.1Y-Y
8.
 
Pentax K-1Ystereo / monoYYmicro2.0Y--
9.
 
Sony A7R IIIYstereo / monoYYmicro3.1YYY
10.
 
Sony A7R IIYstereo / monoYYmicro2.0YY-
11.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
12.
 
Sony RX100 III-stereo / mono--micro2.0YY-
13.
 
Sony RX10Ystereo / monoYYmicro2.0YY-
14.
 
Sony RX100 IIYstereo / mono--micro2.0YY-
15.
 
Sony A99Ystereo / monoYYmini2.0---
16.
 
Sony A850Y- / ---mini2.0---
17.
 
Sony A900Y- / ---mini2.0---

It is notable that the A99 II has a hotshoe, while the RX100 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Studio photographers will appreciate that the Sony A99 II (unlike the RX100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The A99 II is a recent model that features in the current product line-up of Sony. In contrast, the RX100 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX100 was succeeded by the Sony RX100 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Sony website.

Review summary

So what conclusions can be drawn? Is the Sony A99 II better than the Sony RX100 or vice versa? Below is a summary of the relative strengths of each of the two contestants.


Advantages of the Sony Alpha ALT-A99 II:

  • More detail: Offers more megapixels (42.2 vs 20MP) with a 45% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (26 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (2.8 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (1 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (2.6 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • 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 an LCD display on top to control shooting parameters.
  • 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 shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • Faster burst: Shoots at higher frequency (12 vs 10 flaps/sec) to capture the decisive moment.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (490 versus 330) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • 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 4 years and 3 months of technical progress since the RX100 launch.


Arguments in favor of the Sony Cyber-shot DSC-RX100:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Ready to shoot: Comes with an integrated lens, while the A99 II requires a separate lens.
  • More compact: Is smaller (102x58mm vs 143x104mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the A99 II).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More heavily discounted: Has been around for much longer (launched in June 2012).

If the count of individual advantages (bullet points above) is taken as a guide, the A99 II is the clear winner of the match-up (27 : 8 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

A99 II 27:08 RX100

How about other alternatives? Do the specifications of the Sony A99 II and the Sony RX100 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom 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 says little about, for example, the shooting experience and imaging performance of the A99 II and the RX100 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 why hands-on reviews by experts 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199 i
2.
 
Sony RX1005/5+ +..78/1004/55/5 Jun 2012 649i
3.
 
Canon G9 X Mark II4/5..4/575/1004.5/54.5/5 Jan 2017 529 i
4.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699 i
5.
 
Canon G9 X3.5/5+ +....4.5/54.5/5 Oct 2015 529i
6.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 3,299 i
7.
 
Panasonic S1R4.5/5..4.6/589/1004.5/54.5/5 Feb 2019 3,699 i
8.
 
Pentax K-15/5....84/1005/55/5 Feb 2016 1,799i
9.
 
Sony A7R III..+ +4/590/1004.5/55/5 Oct 2017 3,199i
10.
 
Sony A7R II5/5+ +5/590/1005/55/5 Jun 2015 3,199i
11.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999i
12.
 
Sony RX100 III5/5+ +..82/1004.5/55/5 May 2014 799i
13.
 
Sony RX105/5+..80/1004.5/54.5/5 Oct 2013 1,299i
14.
 
Sony RX100 II5/5+ +..79/1004.5/54.5/5 Jun 2013 749i
15.
 
Sony A995/5....84/1004.5/54.5/5 Sep 2012 2,799i
16.
 
Sony A8503/5....75/100..4.5/5 Aug 2009 1,999i
17.
 
Sony A900..+ +..+ +4.5/55/5 Sep 2008 2,999i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Sony A99 II:
Check Amazon price
Sony RX100:
Check Ebay offers

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 use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Sony A99 II vs Sony RX100

    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 Sony A99 II Sony RX100
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Sony A mount lenses 28-100mm f/1.8-4.9
    Launch Date September 2016 June 2012
    Launch Price USD 3,199 USD 649
    Sensor Specs Sony A99 II Sony RX100
    Sensor Technology BSI-CMOS CMOS
    Sensor Format Full Frame Sensor 1" Sensor
    Sensor Size 35.9 x 24.0 mm 13.2 x 8.8 mm
    Sensor Area 861.6 mm2 116.16 mm2
    Sensor Diagonal 43.2 mm 15.9 mm
    Crop Factor 1.0x 2.7x
    Sensor Resolution 42.2 Megapixels 20 Megapixels
    Image Resolution 7952 x 5304 pixels 5472 x 3648 pixels
    Pixel Pitch 4.52 μm 2.41 μm
    Pixel Density 4.90 MP/cm2 17.18 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video 1080/60p Video
    ISO Setting 100 - 25,600 ISO 100 - 6,400 ISO
    ISO Boost 50 - 25,600 ISO 100 - 25,600 ISO
    Image Processor BIONZ X BIONZ X
    DXO Sensor Quality (score) 92 66
    DXO Color Depth (bits) 25.4 22.6
    DXO Dynamic Range (EV) 13.4 12.4
    DXO Low Light (ISO) 2317 390
    Screen Specs Sony A99 II Sony RX100
    Viewfinder Type Electronic viewfinder no viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.78x
    Viewfinder Resolution 2400k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1229k dots 1229k dots
    LCD Attachment Fully flexible screen Fixed screen
    Shooting Specs Sony A99 II Sony RX100
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/2000s
    Continuous Shooting 12 shutter flaps/s 10 shutter flaps/s
    Image StabilizationIn-body stabilizationLens-based stabilization
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium MS or SDXC cards MS or SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support UHS-I no
    Connectivity Specs Sony A99 II Sony RX100
    External Flash Hotshoe no Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Near-Field Communication NFC built-in no NFC
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Sony A99 II Sony RX100
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type NP-FM500H NP-BX1
    Battery Life (CIPA)490 shots per charge330 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 143 x 104 x 76 mm
    (5.6 x 4.1 x 3.0 in)
    102 x 58 x 36 mm
    (4.0 x 2.3 x 1.4 in)
    Camera Weight 849 g (29.9 oz) 240 g (8.5 oz)
    Sony A99 II:
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    Sony RX100:
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