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Pentax K-5 II vs Sony A5100

The Pentax K-5 II and the Sony Alpha A5100 are two digital cameras that were announced, respectively, in September 2012 and August 2014. The K-5 II is a DSLR, while the A5100 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. The Pentax has a resolution of 16.1 megapixels, whereas the Sony provides 24 MP.

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

Headline Specifications
Pentax K-5 II
versus
Sony A5100
Pentax K-5 II   Sony A5100
Digital single lens reflex Mirrorless system camera
Pentax K mount lenses Sony E mount lenses
16.1 MP – APS-C sensor 24 MP – APS-C sensor
1080/25p Video 1080/60p Video
ISO 100-12,800 (80 - 51,200) ISO 100-25,600
Optical viewfinder No viewfinder, LCD framing
3.0" LCD – 921k dots 3.0" LCD – 922k dots
Fixed screen (not touch-sensitive) Tilting touchscreen
7 shutter flaps per second 6 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodynot weather sealed
740 shots per battery charge400 shots per battery charge
131 x 97 x 73 mm, 760 g 110 x 63 x 36 mm, 283 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-5 II and the Sony Alpha A5100? 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 Pentax K-5 II and the Sony A5100 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 size dimensions are rounded to the nearest millimeter.

The A5100 can be obtained in two different colors (black, white), while the K-5 II is only available in black.

Size Pentax K-5 II vs Sony A5100
Compare K-5 II versus A5100 top
Comparison K-5 II or A5100 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A5100 is considerably smaller (45 percent) than the Pentax K-5 II. Moreover, the A5100 is substantially lighter (63 percent) than the K-5 II. It is worth mentioning in this context that the K-5 II is splash and dust resistant, while the A5100 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 K-5 II gets 740 shots out of its D-LI90 battery, while the A5100 can take 400 images on a single charge of its NP-FW50 power pack. The power pack in the A5100 can be charged via the USB port, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras 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.
 
Pentax K-5 II 131 mm 97 mm 73 mm 760 g 740 Y Sep 2012 1,099ebay.com
2.
 
Sony A5100 110 mm 63 mm 36 mm 283 g 400 n Aug 2014 549ebay.com
3.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199ebay.com
4.
 
Olympus E-M5 122 mm 89 mm 43 mm 425 g 360 Y Feb 2012 1,299ebay.com
5.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099ebay.com
6.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 amazon.com
7.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099ebay.com
8.
 
Pentax K-50 130 mm 97 mm 71 mm 650 g 410 Y Jun 2013 599ebay.com
9.
 
Pentax K-500 130 mm 97 mm 71 mm 646 g 710 n Jun 2013 549ebay.com
10.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299ebay.com
11.
 
Pentax K-30 130 mm 97 mm 71 mm 650 g 410 Y May 2012 849ebay.com
12.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099ebay.com
13.
 
Sony A5000 110 mm 63 mm 36 mm 269 g 420 n Jan 2014 449ebay.com
14.
 
Sony A6000 120 mm 67 mm 45 mm 344 g 360 n Feb 2014 599ebay.com
15.
 
Sony A3000 128 mm 91 mm 85 mm 411 g 470 n Aug 2013 329ebay.com
16.
 
Sony NEX-3N 110 mm 62 mm 35 mm 269 g 480 n Feb 2013 499ebay.com
17.
 
Sony NEX-3 117 mm 62 mm 33 mm 297 g 330 n May 2010 599ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A5100 was launched at a markedly lower price (by 50 percent) than the K-5 II, 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.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the A5100 is 1 percent smaller. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Pentax K-5 II and Sony A5100 sensor measures

Despite having a slightly smaller sensor, the A5100 offers a higher resolution of 24 megapixels, compared with 16.1 MP of the K-5 II. 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 3.91μm versus 4.81μm for the K-5 II). However, it should be noted that the A5100 is a somewhat more recent model (by 1 year and 11 months) than the K-5 II, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.

The resolution advantage of the Sony A5100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A5100 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Pentax K-5 II are 24.6 x 16.3 inches or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inches or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.7 x 27.6 cm for excellent quality prints.

The A5100 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Pentax K-5 II has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 80-51200. The corresponding ISO settings for the Sony Alpha A5100 are ISO 100 to ISO 25600 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

K-5 II versus A5100 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 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
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Pentax K-5 II APS-C 16.1 4928 32641080/25p23.814.1123582
2.
 
Sony A5100 APS-C 24.0 6000 40001080/60p23.812.7134780
3.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
4.
 
Olympus E-M5 Four Thirds 15.9 4608 34561080/60i22.812.382671
5.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
6.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i23.813.1163980
7.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
8.
 
Pentax K-50 APS-C 16.1 4928 32641080/30p23.713.0112079
9.
 
Pentax K-500 APS-C 16.1 4928 32641080/30p23.713.1108779
10.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
11.
 
Pentax K-30 APS-C 16.1 4928 32641080/30p23.713.0112979
12.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
13.
 
Sony A5000 APS-C 19.8 5456 36321080/60i23.813.0108979
14.
 
Sony A6000 APS-C 24.0 6000 40001080/60p24.113.1134782
15.
 
Sony A3000 APS-C 19.8 5456 36321080/60i23.712.8106878
16.
 
Sony NEX-3N APS-C 16.0 4912 32641080/60i22.812.5106774
17.
 
Sony NEX-3 APS-C 14.0 4592 3056720/30p22.112.083068
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 also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A5100 provides a faster frame rate than the K-5 II. It can shoot movie footage at 1080/60p, while the Pentax is limited to 1080/25p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the K-5 II has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the A5100 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Pentax K-5 II and Sony A5100 in connection with corresponding information for a sample of similar 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.
 
Pentax K-5 IIoptical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
2.
 
Sony A5100none n3.0 / 922 tilting Y 1/4000s 6.0/s Y n
3.
 
Nikon D7100optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
4.
 
Olympus E-M51440 n3.0 / 610 tilting Y 1/4000s 9.0/s n Y
5.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
6.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0/s Y Y
7.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
8.
 
Pentax K-50optical n3.0 / 921 fixed n 1/6000s 6.0/s Y Y
9.
 
Pentax K-500optical n3.0 / 921 fixed n 1/6000s 6.0/s Y Y
10.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
11.
 
Pentax K-30optical n3.0 / 921 fixed n 1/6000s 6.0/s Y Y
12.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
13.
 
Sony A5000none n3.0 / 461 tilting n 1/4000s 3.5/s Y n
14.
 
Sony A60001440 n3.0 / 922 tilting n 1/4000s 11.0/s Y n
15.
 
Sony A3000202 n3.0 / 230 fixed n 1/4000s 2.5/s Y n
16.
 
Sony NEX-3Noptional n3.0 / 460 tilting n 1/4000s 4.0/s Y n
17.
 
Sony NEX-3optional n3.0 / 920 tilting n 1/4000s 7.0/s n n
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the K-5 II, but is missing on the A5100 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 A5100 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 K-5 II does not have a selfie-screen.

The Pentax K-5 II 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 K-5 II writes its imaging data to SDXC cards, while the A5100 uses SDXC or Memory Stick PRO Duo cards. The A5100 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the K-5 II cannot take advantage of Ultra High Speed SD cards.

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Pentax K-5 II and Sony Alpha A5100 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.
 
Pentax K-5 IIYstereo / monoY-mini2.0---
2.
 
Sony A5100-stereo / mono--micro2.0YY-
3.
 
Nikon D7100Ystereo / monoYYmini2.0---
4.
 
Olympus E-M5Ystereo / mono--mini2.0---
5.
 
Pentax KPYstereo / monoY--2.0Y--
6.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
7.
 
Pentax K-3 IIYmono / monoYYmini3.0---
8.
 
Pentax K-50Ymono / mono--micro2.0---
9.
 
Pentax K-500Ymono / mono---2.0---
10.
 
Pentax K-3Ymono / monoYYmini3.0---
11.
 
Pentax K-30Ymono / mono---2.0---
12.
 
Pentax K-5Ystereo / monoY-mini2.0---
13.
 
Sony A5000-stereo / mono--micro2.0YY-
14.
 
Sony A6000Ystereo / mono--micro2.0YY-
15.
 
Sony A3000Ystereo / mono--mini2.0---
16.
 
Sony NEX-3N-stereo / mono--micro2.0---
17.
 
Sony NEX-3Ystereo / mono--mini2.0---

It is notable that the K-5 II has a hotshoe, while the A5100 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Studio photographers will appreciate that the Pentax K-5 II (unlike the A5100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the K-5 II and the A5100 have been discontinued, but can regularly be found used on ebay. The K-5 II was replaced by the Pentax K-3, while the A5100 does not have a direct successor. Further information on the features and operation of the K-5 II and A5100 can be found, respectively, in the Pentax K-5 II Manual (free pdf) or the online Sony A5100 Manual.

Review summary

So how do things add up? Is the Pentax K-5 II better than the Sony A5100 or vice versa? The listing below highlights the relative strengths of the two models.

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Advantages of the Pentax K-5 II:

  • More dynamic range: Captures a larger spectrum of light and dark details (1.4 EV of extra DR).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (7 vs 6 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (740 versus 400) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More heavily discounted: Has been on the market for longer (launched in September 2012).

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Reasons to prefer the Sony Alpha A5100:

  • More detail: Has more megapixels (24 vs 16.1MP), which boosts linear resolution by 22%.
  • Better video: Provides higher movie framerates (1080/60p versus 1080/25p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • More compact: Is smaller (110x63mm vs 131x97mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 477g or 63 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • 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 into a lower priced category (50 percent cheaper at launch).
  • More modern: Was introduced somewhat (1 year and 11 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the A5100 emerges as the winner of the match-up (15 : 13 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 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.

K-5 II 13:15 A5100

How about other alternatives? Do the specifications of the Pentax K-5 II and the Sony A5100 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the K-5 II and the A5100 in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Pentax K-5 II5/5....80/1005/54.5/5 Sep 2012 1,099ebay.com
2.
 
Sony A51004.5/5+....4.5/55/5 Aug 2014 549ebay.com
3.
 
Nikon D71005/5+ +..85/1004.5/54.5/5 Feb 2013 1,199ebay.com
4.
 
Olympus E-M54/5+ +..80/1004.5/55/5 Feb 2012 1,299ebay.com
5.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099ebay.com
6.
 
Pentax K-704.5/5..4/579/1004.5/54.5/5 Jun 2016 649 amazon.com
7.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099ebay.com
8.
 
Pentax K-505/5......5/54.5/5 Jun 2013 599ebay.com
9.
 
Pentax K-500........4.5/54.5/5 Jun 2013 549ebay.com
10.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299ebay.com
11.
 
Pentax K-304/5....78/1004.5/54.5/5 May 2012 849ebay.com
12.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 1,099ebay.com
13.
 
Sony A50003/5+....4.5/54.5/5 Jan 2014 449ebay.com
14.
 
Sony A60005/5+4.5/580/1004.5/55/5 Feb 2014 599ebay.com
15.
 
Sony A30003/5+....4/54/5 Aug 2013 329ebay.com
16.
 
Sony NEX-3N3/5......4.5/54.5/5 Feb 2013 499ebay.com
17.
 
Sony NEX-3......70/1004.5/54/5 May 2010 599ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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Check K-5 II offers at
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Check A5100 offers at
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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. 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: Pentax K-5 II vs Sony A5100

    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 K-5 II Sony A5100
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Pentax K mount lenses Sony E mount lenses
    Launch Date September 2012 August 2014
    Launch Price USD 1,099 USD 549
    Sensor Specs Pentax K-5 II Sony A5100
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.7 x 15.7 mm 23.5 x 15.6 mm
    Sensor Area 372.09 mm2 366.6 mm2
    Sensor Diagonal 28.4 mm 28.2 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 16.1 Megapixels 24 Megapixels
    Image Resolution 4928 x 3264 pixels 6000 x 4000 pixels
    Pixel Pitch 4.81 μm 3.91 μm
    Pixel Density 4.32 MP/cm2 6.55 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/25p Video 1080/60p Video
    ISO Setting 100 - 12,800 ISO 100 - 25,600 ISO
    ISO Boost 80 - 51,200 ISO no Enhancement
    Image Processor PRIME II BIONZ X
    DXO Sensor Quality (score) 82 80
    DXO Color Depth (bits) 23.8 23.8
    DXO Dynamic Range (EV) 14.1 12.7
    DXO Low Light (ISO) 1235 1347
    Screen Specs Pentax K-5 II Sony A5100
    Viewfinder Type Optical viewfinder no viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.61x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 922k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Pentax K-5 II Sony A5100
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/4000s
    Continuous Shooting 7 shutter flaps/s 6 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Pentax K-5 II Sony A5100
    External Flash Hotshoe no Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Pentax K-5 II Sony A5100
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type D-LI90 NP-FW50
    Battery Life (CIPA)740 shots per charge400 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 131 x 97 x 73 mm
    (5.2 x 3.8 x 2.9 in)
    110 x 63 x 36 mm
    (4.3 x 2.5 x 1.4 in)
    Camera Weight 760 g (26.8 oz) 283 g (10.0 oz)
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    Check K-5 II offers at
    ebay.com
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    Check A5100 offers at
    ebay.com

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