Ur-Leica Contax Camera Comparison
Leica 1600mm Vivitar Shutter count
A potelyt.com – Photography & Imaging Resources
ad
PW

Canon G1 X Mark III vs Sony A5100

The Canon PowerShot G1 X Mark III and the Sony Alpha A5100 are two digital cameras that were officially introduced, respectively, in October 2017 and August 2014. The G1X Mark III is a fixed lens compact, while the A5100 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. Both cameras offer a resolution of 24 megapixels.

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

Headline Specifications
Canon G1 X Mark III versus Sony A5100
Canon G1 X Mark III Sony A5100
Fixed lens compact camera Mirrorless system camera
24-72mm f/2.8-5.6 Sony E mount lenses
24 MP, APS-C Sensor 24 MP, APS-C Sensor
1080/60p Video 1080/60p Video
ISO 100-25,600 ISO 100-25,600
Electronic viewfinder (2360k dots) No viewfinder, LCD framing
3.0 LCD, 1040k dots 3.0 LCD, 922k dots
Swivel touchscreen Tilting touchscreen
9 shutter flaps per second 6 shutter flaps per second
Weathersealed bodynot weather sealed
200 shots per battery charge400 shots per battery charge
115 x 78 x 51 mm, 399 g 110 x 63 x 36 mm, 283 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G1 X Mark III 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 Canon G1 X Mark III and the Sony A5100 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.

The A5100 can be obtained in two different colors (black, white), while the G1X Mark III is only available in black.

Size Canon G1 X Mark III vs Sony A5100
Compare G1X Mark III versus A5100 top
Comparison G1X Mark III 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 notably smaller (23 percent) than the Canon G1 X Mark III. It is worth mentioning in this context that the G1X Mark III 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 and possibly misleading, as the G1X Mark III has a lens built in, whereas the A5100 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the A5100 and their specifications in the Sony E-Mount Lens Catalog.

Concerning battery life, the G1X Mark III gets 200 shots out of its NB-13L 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 adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

scroll hint
Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life 1
Weather
Sealing
Camera
Launch 2
Launch
Price (USD)
Street
Price
 
Canon G1 X Mark III 115 mm 78 mm 51 mm 399 g 200 Y Oct 2017 1,299 i
 
Sony A5100 110 mm 63 mm 36 mm 283 g 400 n Aug 2014 549 i
 
Canon M50 116 mm 88 mm 59 mm 390 g 235 n Feb 2018 779 i
 
Canon 6D Mark II 144 mm 111 mm 75 mm 765 g 1200 Y Jun 2017 1,999 i
 
Canon 200D 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549i
 
Canon G9 X Mark II 98 mm 58 mm 31 mm 206 g 235 n Jan 2017 529 i
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199i
 
Canon SX540 120 mm 82 mm 92 mm 442 g 205 n Jan 2016 399 i
 
Fujifilm X100V 128 mm 75 mm 53 mm 478 g 420 Y Feb 2020 1,399 i
 
Fujifilm X100F 127 mm 75 mm 52 mm 469 g 390 n Jan 2017 1,299i
 
Nikon D7500 136 mm 104 mm 73 mm 720 g 950 Y Apr 2017 1,299 i
 
Sony RX10 III 133 mm 94 mm 127 mm 1051 g 420 Y Mar 2016 1,499 i
 
Sony RX100 IV 102 mm 58 mm 41 mm 298 g 280 n Jun 2015 999i
 
Sony A5000 110 mm 63 mm 36 mm 269 g 420 n Jan 2014 449i
 
Sony A6000 120 mm 67 mm 45 mm 344 g 360 n Feb 2014 599i
 
Sony NEX-3N 110 mm 62 mm 35 mm 269 g 480 n Feb 2013 499i
 
Sony RX100 102 mm 58 mm 36 mm 240 g 330 n Jun 2012 649i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.

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. 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 size of the imaging sensor is a crucial determinant 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. 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 associated with larger, more expensive camera bodies 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 11 percent bigger. 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.

Canon G1 X Mark III and Sony A5100 sensor measures

Even though the A5100 has a larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the A5100 has a lower pixel density and larger individual pixels (with a pixel pitch of 3.91μm versus 3.72μm for the G1X Mark III), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the G1X Mark III is much more recent (by 3 years and 1 month) than the A5100, and its sensor will have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.

The Canon PowerShot G1 X Mark III has a native sensitivity range from ISO 100 to ISO 25600. The Sony Alpha A5100 offers exactly the same ISO settings.

G1X Mark III 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

scroll hint
Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
 
Canon G1 X Mark III APS-C 24.0 6000 40001080/60p........
 
Sony A5100 APS-C 24.0 6000 40001080/60p23.812.7134780
 
Canon M50 APS-C 24.0 6000 40004K/24p........
 
Canon 6D Mark II Full Frame 26.0 6240 41601080/60p24.411.9286285
 
Canon 200D APS-C 24.0 6000 40001080/60p23.613.4104179
 
Canon G9 X Mark II 1-inch 20.0 5472 36481080/60p21.912.552265
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
 
Canon SX540 1/2.3 20.2 5184 38881080/60p........
 
Fujifilm X100V APS-C 26.0 6240 41604K/30p........
 
Fujifilm X100F APS-C 24.0 6000 40001080/60p........
 
Nikon D7500 APS-C 20.7 5568 37124K/30p24.314.0148386
 
Sony RX10 III 1-inch 20.0 5472 36484K/30p23.112.647270
 
Sony RX100 IV 1-inch 20.0 5472 36484K/30p22.812.659170
 
Sony A5000 APS-C 19.8 5456 36321080/60i23.813.0108979
 
Sony A6000 APS-C 24.0 6000 40001080/60p24.113.1134782
 
Sony NEX-3N APS-C 16.0 4912 32641080/60i22.812.5106774
 
Sony RX100 1-inch 20.0 5472 36481080/60p22.612.439066

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (1080/60p).

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the G1X Mark III has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the A5100 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon G1 X Mark III, the Sony A5100, and comparable cameras.

scroll hint
Core Features
  Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
 
Canon G1 X Mark III2360 n 3.0 1040 swivel Y 1/2000s 9.0 Y Y
 
Sony A5100none n 3.0 922 tilting Y 1/4000s 6.0 Y n
 
Canon M502360 n 3.0 1040 swivel Y 1/4000s 10.0 Y n
 
Canon 6D Mark IIoptical Y 3.0 1040 swivel Y 1/4000s 6.5 n n
 
Canon 200Doptical n 3.0 1040 swivel Y 1/4000s 5.0 Y n
 
Canon G9 X Mark IInone n 3.0 1040 fixed Y 1/2000s 8.2 Y Y
 
Canon 80Doptical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n
 
Canon SX540none n 3.0 461 fixed n 1/2000s 5.9 Y Y
 
Fujifilm X100V3690 n 3.0 1620 tilting Y 1/4000s 11.0 Y n
 
Fujifilm X100F2360 n 3.0 1040 fixed n 1/4000s 8.0 Y n
 
Nikon D7500optical Y 3.2 922 tilting Y 1/8000s 8.0 Y n
 
Sony RX10 III2359 Y 3.0 1229 tilting n 1/2000s 14.0 Y Y
 
Sony RX100 IV2359 n 3.0 1228 tilting n 1/2000s 16.0 Y Y
 
Sony A5000none n 3.0 461 tilting n 1/4000s 3.5 Y n
 
Sony A60001440 n 3.0 922 tilting n 1/4000s 11.0 Y n
 
Sony NEX-3Noptional n 3.0 460 tilting n 1/4000s 4.0 Y n
 
Sony RX100none n 3.0 1229 fixed n 1/2000s 10.0 Y Y
Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

The Canon G1 X Mark III 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 G1X Mark III writes its imaging data to SDXC cards, while the A5100 uses SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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 Canon PowerShot G1 X Mark III and Sony Alpha A5100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

scroll hint
Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
 
Canon G1 X Mark IIIYstereomono--micro2.0YYY
 
Sony A5100-stereomono--micro2.0YY-
 
Canon M50YstereomonoY-micro2.0YYY
 
Canon 6D Mark IIYstereomonoY-mini2.0YYY
 
Canon 200DYstereomonoY-mini2.0YYY
 
Canon G9 X Mark II-stereomono--micro2.0YYY
 
Canon 80DYstereomonoYYmini2.0YY-
 
Canon SX540-stereomono--mini2.0YY-
 
Fujifilm X100VYstereomonoY-micro3.1Y-Y
 
Fujifilm X100FYstereomonoY-micro2.0Y--
 
Nikon D7500YstereomonoYYmini2.0Y-Y
 
Sony RX10 IIIYstereomonoYYmicro2.0YY-
 
Sony RX100 IV-stereomono--micro2.0YY-
 
Sony A5000-stereomono--micro2.0YY-
 
Sony A6000Ystereomono--micro2.0YY-
 
Sony NEX-3N-stereomono--micro2.0---
 
Sony RX100-stereomono--micro2.0---

It is notable that the G1X Mark III has a hotshoe, while the A5100 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Both the G1X Mark III and the A5100 are recent models that are part of the current product line-up. The A5100 replaced the earlier Sony A5000, while the G1X Mark III followed on from the Canon G1 X Mark II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.

Review summary

So what is the bottom line? Is the Canon G1 X Mark III better than the Sony A5100 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

ilogo

Reasons to prefer the Canon PowerShot G1 X Mark III:

  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster burst: Shoots at higher frequency (9 vs 6 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Ready to shoot: Has a lens built-in, whereas the A5100 requires a separate lens.
  • 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.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More modern: Reflects 3 years and 1 month of technical progress since the A5100 launch.

ilogo

Arguments in favor of the Sony Alpha A5100:

  • Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
  • More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
  • More compact: Is smaller (110x63mm vs 115x78mm) and will fit more readily into a bag.
  • Longer lasting: Gets more shots (400 versus 200) out of a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More heavily discounted: Has been around for much longer (launched in August 2014).

If the count of relative strengths (bullet points above) is taken as a measure, the G1X Mark III is the clear winner of the match-up (11 : 5 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

G1X Mark III 11:05 A5100

How about other alternatives? Do the specifications of the Canon G1 X Mark III and the Sony A5100 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the G1X Mark III and the A5100 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 expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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
Review Scores
  Camera
Model
camera
  labs  
dp
review  
ephoto
  zine  
imaging
resource
photography
  blog  
Camera
Launch
Launch
Price (USD)
Street
Price
 
Canon G1 X Mark III+79/1004.5/5..4.5/5 Oct 2017 1,299 i
 
Sony A5100+..4.5/54.5/55/5 Aug 2014 549 i
 
Canon M50+79/100..4/53.5/5 Feb 2018 779 i
 
Canon 6D Mark II+80/1004.5/54/54/5 Jun 2017 1,999 i
 
Canon 200D+ +78/1004.5/54.5/54.5/5 Jun 2017 549i
 
Canon G9 X Mark II..75/1004.5/54.5/54.5/5 Jan 2017 529 i
 
Canon 80D+ +84/1004.5/54.5/54.5/5 Feb 2016 1,199i
 
Canon SX540.......... Jan 2016 399 i
 
Fujifilm X100V+ +86/1005/5..4.5/5 Feb 2020 1,399 i
 
Fujifilm X100F+83/1004.5/5..4.5/5 Jan 2017 1,299i
 
Nikon D7500+ +86/1005/54.5/54.5/5 Apr 2017 1,299 i
 
Sony RX10 III+84/1004.5/54.5/54.5/5 Mar 2016 1,499 i
 
Sony RX100 IV+ +85/1004/54.5/54.5/5 Jun 2015 999i
 
Sony A5000+..4.5/5o4.5/5 Jan 2014 449i
 
Sony A6000+80/1004.5/55/55/5 Feb 2014 599i
 
Sony NEX-3N....4.5/54/54.5/5 Feb 2013 499i
 
Sony RX100+ +78/1004/55/55/5 Jun 2012 649i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Canon G1 X Mark III:
Check Amazon price
Sony A5100:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

~

    Specifications: Canon G1 X Mark III 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 Canon G1 X Mark III Sony A5100
    Camera Type Fixed lens compact camera Mirrorless system camera
    Camera Lens 24-72mm f/2.8-5.6 Sony E mount lenses
    Launch Date October 2017 August 2014
    Launch Price USD 1,299 USD 549
    Sensor Specs Canon G1 X Mark III Sony A5100
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 22.3 x 14.9 mm 23.5 x 15.6 mm
    Sensor Area 332.27 mm2 366.6 mm2
    Sensor Diagonal 26.8 mm 28.2 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 24 Megapixels 24 Megapixels
    Image Resolution 6000 x 4000 pixels 6000 x 4000 pixels
    Pixel Pitch 3.72 μm 3.91 μm
    Pixel Density 7.22 MP/cm2 6.55 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/60p Video 1080/60p Video
    ISO Setting 100 - 25,600 ISO 100 - 25,600 ISO
    Image Processor DIGIC 7 BIONZ X
    DXO Sensor Quality (score) .. 80
    DXO Color Depth (bits) .. 23.8
    DXO Dynamic Range (EV) .. 12.7
    DXO Low Light (ISO) .. 1347
    Screen Specs Canon G1 X Mark III Sony A5100
    Viewfinder Type Electronic viewfinder no viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification
    Viewfinder Resolution 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 922k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon G1 X Mark III Sony A5100
    Focus System On-Sensor Phase-detect On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/2000s 1/4000s
    Continuous Shooting 9 shutter flaps/s 6 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Canon G1 X Mark III Sony A5100
    External Flash Hotshoe no Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication NFC built-in NFC built-in
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Canon G1 X Mark III Sony A5100
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type NB-13L NP-FW50
    Battery Life (CIPA)200 shots per charge400 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 115 x 78 x 51 mm
    (4.5 x 3.1 x 2.0 in)
    110 x 63 x 36 mm
    (4.3 x 2.5 x 1.4 in)
    Camera Weight 399 g (14.1 oz) 283 g (10.0 oz)

    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  »  Canon G1 X Mark III vs Sony A5100

    Thanks for your vote!

    You rated this page 4 out of 5.


    Rating

    Any additional comment or suggestion for improvement would be welcome.



    If you like it, make sure you share it.

    • Mention this page to your Facebook friends and Twitter followers.
    • Bookmark it in your browser for future reference by pressing "Crtl" + "D".
    • Create a hyperlink by copying the text below into your web-project or discussion forum entry.

    Once again, thanks for taking the time to provide feedback.