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Nikon D7100 versus Panasonic G9

The Nikon D7100 and the Panasonic Lumix DC-G9 are two enthusiast cameras that were announced, respectively, in February 2013 and November 2017. The D7100 is a DSLR, while the G9 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D7100) and a Four Thirds (G9) sensor. The Nikon has a resolution of 24 megapixel, whereas the Panasonic provides 20.2 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Nikon D7100 vs Panasonic G9

An illustration of the physical size and weight of the Nikon D7100 and the Panasonic G9 is provided in the side-by-side display below. 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. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the D7100 – represents 100 percent across all the size and weight measures).

Snapsort Nikon D7100 vs Panasonic G9
Compare D7100 versus G9 top
Compare D7100 and G9 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic G9 is notably smaller (9 percent) than the Nikon D7100. Moreover, the G9 is markedly lighter (14 percent) than the D7100. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can find an overview of optics for the two cameras in the Nikon Lens Catalog (D7100) and the Micro Four Thirds Lens Catalog (G9). Mirrorless cameras, such as the G9, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the D7100 gets 950 shots out of its EN-EL15 battery, while the G9 can take 400 images on a single charge of its DMW-BLF19 power pack.

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, 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.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Nikon D7100» 5.4 in 4.2 in 3.0 in 27.0 oz 950 Y Feb 2013 1,199- i
Panasonic G9« 5.4 in 3.8 in 3.6 in 23.2 oz 400 Y Nov 2017 1,699 i i
Canon 70D« » 5.5 in 4.1 in 3.1 in 26.6 oz 920 Y Jul 2013 1,199- i
Fujifilm X-H1« » 5.5 in 3.8 in 3.4 in 23.7 oz 310 Y Feb 2018 1,899 i i
Nikon D7500« » 5.4 in 4.1 in 2.9 in 25.4 oz 950 Y Apr 2017 1,299 i i
Nikon D500« » 5.8 in 4.5 in 3.2 in 30.3 oz 1240 Y Jan 2016 1,999 i i
Nikon D7200« » 5.4 in 4.2 in 3.0 in 27.0 oz 1110 Y Mar 2015 1,199- i
Nikon D3300« » 4.9 in 3.9 in 3.0 in 15.2 oz 700 n Jan 2014 499- i
Nikon D750« » 5.6 in 4.4 in 3.1 in 26.5 oz 1230 Y Sep 2014 2,299 i i
Nikon D610« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Oct 2013 1,999 i i
Nikon D600« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Sep 2012 2,099- i
Nikon D7000« » 5.2 in 4.1 in 3.0 in 27.5 oz 1050 Y Sep 2010 1,499- i
Olympus E-M1 II« » 5.3 in 3.6 in 2.6 in 20.2 oz 440 Y Sep 2016 1,999 i i
Panasonic GH5s« » 5.5 in 3.9 in 3.4 in 23.3 oz 440 Y Jan 2018 2,499 i i
Panasonic GH5« » 5.5 in 3.9 in 3.4 in 25.6 oz 410 Y Jan 2017 1,999 i i
Panasonic G85« » 5.0 in 3.5 in 2.9 in 17.8 oz 330 Y Sep 2016 899 i i
Sony RX10« » 5.1 in 3.5 in 4.0 in 28.7 oz 420 Y Oct 2013 1,299- i

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D7100 was launched at a markedly lower price (by 29 percent) than the G9, which puts it into a different market segment. 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: Nikon D7100 vs Panasonic G9

The size of the imaging sensor is a crucial determinant 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.

Of the two cameras under consideration, the Nikon D7100 features an APS-C sensor and the Panasonic G9 a Four Thirds sensor. The sensor area in the G9 is 39 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the D7100 has a native 3:2 aspect ratio, while the one in the G9 offers a 4:3 aspect.

Nikon D7100 and Panasonic G9 sensor measures

With 24MP, the D7100 offers a higher resolution than the G9 (20.2MP), but the D7100 nevertheless has larger individual pixels (pixel pitch of 3.91μm versus 3.34μm for the G9) due to its larger sensor. However, the G9 is a somewhat more recent model (by 4 years and 8 months) than the D7100, and its sensor might 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

Unlike the D7100, the G9 has the capacity to capture high quality composite images (80.6MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

D7100 versus G9 MP

For most cameras, data on sensor performance has been reported by DXO Mark. 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.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Nikon D7100» APS-C 24.0 6000 40001080/60p24.213.7125683
Panasonic G9« Four Thirds 20.2 5184 38884K/60p----
Canon 70D« » APS-C 20.0 5472 36481080/30p22.511.692668
Fujifilm X-H1« » APS-C 24.0 6000 40004K/30p----
Nikon D7500« » APS-C 20.7 5568 37124K/30p24.314.0148386
Nikon D500« » APS-C 20.7 5568 37124K/30p24.014.0132483
Nikon D7200« » APS-C 24.0 6000 40001080/60p24.514.6133387
Nikon D3300« » APS-C 24.0 6000 40001080/60p24.312.8138582
Nikon D750« » Full Frame 24.2 6016 40161080/60p24.814.5295693
Nikon D610« » Full Frame 24.2 6016 40161080/30p25.114.4292594
Nikon D600« » Full Frame 24.2 6016 40161080/30p25.114.2298094
Nikon D7000« » APS-C 16.1 4928 326410800/24p23.513.9116780
Olympus E-M1 II« » Four Thirds 20.2 5184 38884K/30p23.712.8131280
Panasonic GH5s« » Four Thirds 9.9 3680 27004K/60p----
Panasonic GH5« » Four Thirds 20.2 5184 38884K/60p23.913.080777
Panasonic G85« » Four Thirds 15.8 4592 34484K/30p22.812.565671
Sony RX10« » 1-inch 20.0 5472 36481080/60p22.912.647469

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the G9 provides a better video resolution than the D7100. It can shoot movie footage at 4K/60p, while the Nikon is limited to 1080/60p.

 

Feature comparison: Nikon D7100 vs Panasonic G9

Beyond body and sensor, cameras can and do differ across a range of features. For example, the G9 has an electronic viewfinder (3680k dots), while the D7100 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The adjacent table lists some of the other core features of the Nikon D7100 and Panasonic G9 along with similar information for a selection of comparators. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.

Core Features
  Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Nikon D7100»optical Y 3.2 1229 fixed n 8000 6.0 Y n
Panasonic G9«3680 Y 3.0 1040 swivel Y 8000 20.0 n Y
Canon 70D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n
Fujifilm X-H1« »3690 Y 3.0 1040 full-flex Y 8000 14.0 n Y
Nikon D7500« »optical Y 3.2 922 tilting Y 8000 8.0 Y n
Nikon D500« »optical Y 3.2 2359 tilting Y 8000 10.0 n n
Nikon D7200« »optical Y 3.2 1229 fixed n 8000 6.0 Y n
Nikon D3300« »optical n 3.0 921 fixed n 4000 5.0 Y n
Nikon D750« »optical Y 3.2 1229 tilting n 4000 6.0 Y n
Nikon D610« »optical Y 3.2 921 fixed n 4000 6.0 Y n
Nikon D600« »optical Y 3.0 921 fixed n 4000 5.5 Y n
Nikon D7000« »optical Y 3.0 921 fixed n 8000 6.0 Y n
Olympus E-M1 II« »2360 n 3.0 1037 swivel Y 8000 18.0 n Y
Panasonic GH5s« »3680 n 3.2 1620 swivel Y 8000 12.0 n n
Panasonic GH5« »3680 n 3.2 1620 swivel Y 8000 12.0 n Y
Panasonic G85« »2360 n 3.0 1040 swivel Y 4000 9.0 Y Y
Sony RX10« »1440 Y 3.0 1229 tilting n 3200 10.0 Y Y

The G9 is a current model that online retailers, such as amazon, will have in stock. In contrast, the D7100 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the D7100 was succeeded by the Nikon D7200.

Review summary: Nikon D7100 vs Panasonic G9

So how do things add up? Is there a clear favorite between the Nikon D7100 and the Panasonic G9? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Nikon D7100:

  • More detail: Offers more megapixels (24 vs 20.2MP) with a 11% higher linear resolution.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
  • Longer lasting: Can take more shots (950 versus 400) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (29 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2013).

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Arguments in favor of the Panasonic Lumix DC-G9:

  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better video: Provides higher definition movie capture (4K/60p vs 1080/60p).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (20 vs 6 flaps/sec) to capture the decisive moment.
  • Less heavy: Has a lower weight (by 107g or 14 percent) and is thus easier to take along.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • More modern: Reflects 4 years and 8 months of technical progress since the D7100 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the G9 emerges as the winner of the match-up (10 : 8 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.

D7100 08:10 G9

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the D7100 and the G9 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. This is why hands-on reviews by experts are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Nikon D7100»HiRec85/1004.5/55/54.5/5 Feb 2013 1,199- i
Panasonic G9«HiRec85/1005/5-5/5 Nov 2017 1,699 i i
Canon 70D« »HiRec83/1004.5/54.5/55/5 Jul 2013 1,199- i
Fujifilm X-H1« »Rec86/1004.5/5-4.5/5 Feb 2018 1,899 i i
Nikon D7500« »HiRec86/1005/54.5/54.5/5 Apr 2017 1,299 i i
Nikon D500« »HiRec91/1004.5/55/55/5 Jan 2016 1,999 i i
Nikon D7200« »HiRec84/1004.5/54/54.5/5 Mar 2015 1,199- i
Nikon D3300« »Rec77/1004.5/54.5/54.5/5 Jan 2014 499- i
Nikon D750« »HiRec90/1004.5/55/54.5/5 Sep 2014 2,299 i i
Nikon D610« »HiRec87/1004.5/54.5/54.5/5 Oct 2013 1,999 i i
Nikon D600« »HiRec87/1005/54.5/54.5/5 Sep 2012 2,099- i
Nikon D7000« »-80/1004.5/55/54.5/5 Sep 2010 1,499- i
Olympus E-M1 II« »HiRec85/1004.5/55/54.5/5 Sep 2016 1,999 i i
Panasonic GH5s« »-84/1004.5/5-4.5/5 Jan 2018 2,499 i i
Panasonic GH5« »HiRec85/1004.5/55/55/5 Jan 2017 1,999 i i
Panasonic G85« »HiRec84/1005/54.5/54.5/5 Sep 2016 899 i i
Sony RX10« »Rec80/1004.5/54.5/54.5/5 Oct 2013 1,299- i

The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

 

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 a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If you do not see the camera that you are looking for, kindly get in touch, and I will try to locate and add the respective data to the application.

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