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Olympus E-M5 III vs Panasonic FZ300

The Olympus OM-D E-M5 Mark III and the Panasonic Lumix DMC-FZ300 (labelled Panasonic FZ330 in some countries) are two digital cameras that were revealed to the public, respectively, in October 2019 and July 2015. The E-M5 III is a mirrorless interchangeable lens camera, while the FZ300 is a fixed lens compact. The cameras are based on a Four Thirds (E-M5 III) and a 1/2.3-inch (FZ300) sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Panasonic provides 12 MP.

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

Headline Specifications
Olympus E-M5 III versus Panasonic FZ300
Olympus E-M5 III Panasonic FZ300
Mirrorless system camera Fixed lens compact camera
Micro Four Thirds lenses 25-600mm f/2.8
20.2 MP, Four Thirds Sensor 12 MP, 1/2.3" Sensor
4K/30p Video 4K/30p Video
ISO 200-25,600 ISO 100-6,400
Electronic viewfinder (2360k dots) Electronic viewfinder (1440k dots)
3.0 LCD, 1040k dots 3.0 LCD, 1040k dots
Swivel touchscreen Swivel touchscreen
10 shutter flaps per second 12 shutter flaps per second
In-body stabilizationLens-based stabilization
Weathersealed bodyWeathersealed body
310 shots per battery charge380 shots per battery charge
125 x 85 x 50 mm, 414 g 132 x 92 x 117 mm, 691 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M5 Mark III and the Panasonic Lumix DMC-FZ300? 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

The physical size and weight of the Olympus E-M5 III and the Panasonic FZ300 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 width, height and depth dimensions are rounded to the nearest millimeter.

The E-M5 III can be obtained in two different colors (black, silver), while the FZ300 is only available in black.

Size Olympus E-M5 III vs Panasonic FZ300
Compare E-M5 III versus FZ300 top
Comparison E-M5 III or FZ300 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic FZ300 is notably larger (14 percent) than the Olympus E-M5 III. 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 and possibly misleading, as the FZ300 has a lens built in, whereas the E-M5 III 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 E-M5 III and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the E-M5 III gets 310 shots out of its BLS-50 battery, while the FZ300 can take 380 images on a single charge of its DMW-BLC12 power pack. The power pack in the E-M5 III can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199 i
2.
 
Panasonic FZ300 132 mm 92 mm 117 mm 691 g 380 Y Jul 2015 599 i
3.
 
Canon SX60 128 mm 93 mm 114 mm 650 g 340 n Sep 2014 549i
4.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799 i
5.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 699 i
6.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
7.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
8.
 
Olympus PEN-F 125 mm 72 mm 37 mm 427 g 330 n Jan 2016 1,199i
9.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 1,099i
10.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399i
11.
 
Olympus E-M5 122 mm 89 mm 43 mm 425 g 360 Y Feb 2012 1,299i
12.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
13.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199i
14.
 
Panasonic FZ200 125 mm 87 mm 110 mm 588 g 540 n Jul 2012 599i
15.
 
Panasonic FZ150 124 mm 82 mm 92 mm 528 g 410 n Aug 2011 499i
16.
 
Panasonic FZ100 124 mm 82 mm 92 mm 540 g 410 n Jul 2010 499i
17.
 
Sony HX400V 130 mm 93 mm 103 mm 660 g 300 n Feb 2014 499 i
Notes: 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 FZ300 was launched at a lower price than the E-M5 III, 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.

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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.

Of the two cameras under consideration, the Olympus E-M5 III features a Four Thirds sensor and the Panasonic FZ300 a 1/2.3-inch sensor. The sensor area in the FZ300 is 88 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 5.6. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Olympus E-M5 III and Panasonic FZ300 sensor measures

With 20.2MP, the E-M5 III offers a higher resolution than the FZ300 (12MP), but the E-M5 III nevertheless has larger individual pixels (pixel pitch of 3.34μm versus 1.53μm for the FZ300) due to its larger sensor. Moreover, the E-M5 III is a much more recent model (by 4 years and 3 months) than the FZ300, 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Olympus E-M5 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-M5 III for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Panasonic FZ300 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 E-M5 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the FZ300, the E-M5 III has the capacity to capture high quality composite images (80MP) 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).

The Olympus OM-D E-M5 Mark III has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 64-25600. The corresponding ISO settings for the Panasonic Lumix DMC-FZ300 are ISO 100 to ISO 6400 (no boost).

E-M5 III versus FZ300 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.

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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.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p........
2.
 
Panasonic FZ300 1/2.3 12.0 4000 30004K/30p19.311.09738
3.
 
Canon SX60 1/2.3 14.2 4608 30721080/60p19.210.812739
4.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p........
5.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p........
6.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........
7.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
8.
 
Olympus PEN-F Four Thirds 20.2 5184 38881080/60p23.112.489474
9.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
10.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
11.
 
Olympus E-M5 Four Thirds 15.9 4608 34561080/60i22.812.382671
12.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p........
13.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
14.
 
Panasonic FZ200 1/2.3 12.0 4000 30001080/60p19.110.811437
15.
 
Panasonic FZ150 1/2.3 12.0 4000 30001080/60p19.410.913240
16.
 
Panasonic FZ100 1/2.3 14.0 4320 32401080/60i........
17.
 
Sony HX400V 1/2.3 20.2 5184 38881080/60p........

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 FZ300 provides a faster frame rate than the E-M5 III. It can shoot movie footage at 4K/30p, while the Olympus is limited to 4K/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the E-M5 III offers a substantially higher resolution than the one in the FZ300 (2360k vs 1440k dots). The following table reports on some other key feature differences and similarities of the Olympus E-M5 III, the Panasonic FZ300, and comparable cameras.

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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
1.
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
2.
 
Panasonic FZ3001440 n 3.0 1040 swivel Y 1/4000s 12.0 Y Y
3.
 
Canon SX60922 n 3.0 922 swivel n 1/2000s 6.4 Y Y
4.
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
5.
 
Olympus E-M10 IV2360 n 3.0 1040 tilting Y 1/4000s 15.0 Y Y
6.
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
7.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
8.
 
Olympus PEN-F2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y
9.
 
Olympus E-M5 II2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y
10.
 
Olympus E-M12360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y
11.
 
Olympus E-M51440 n 3.0 610 tilting Y 1/4000s 9.0 n Y
12.
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
13.
 
Panasonic GX82360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
14.
 
Panasonic FZ2001312 n 3.0 460 swivel n 1/4000s 12.0 Y Y
15.
 
Panasonic FZ150202 n 3.0 460 swivel n 1/2000s 12.0 Y Y
16.
 
Panasonic FZ100202 n 3.0 460 swivel n 1/2000s 11.0 Y Y
17.
 
Sony HX400V210 n 3.0 921 tilting n 1/4000s 10.0 Y Y

One difference between the cameras concerns the presence of an on-board flash. The FZ300 has one, while the E-M5 III does not. While the built-in flash of the FZ300 is not very powerful, it can at times be useful as a fill-in light.

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 reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, both cameras under consideration feature an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Olympus E-M5 III and the Panasonic FZ300 both have 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.

Concerning the storage of imaging data, both the E-M5 III and the FZ300 write their files to SDXC cards. The E-M5 III supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the FZ300 can use UHS-I cards (up to 104 MB/s).

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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 Olympus OM-D E-M5 Mark III and Panasonic Lumix DMC-FZ300 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
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-Y
2.
 
Panasonic FZ300YstereomonoY-mini2.0Y--
3.
 
Canon SX60YstereomonoY-mini2.0YY-
4.
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-Y
5.
 
Olympus E-M10 IVYstereomono--micro2.0Y-Y
6.
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
7.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
8.
 
Olympus PEN-FYstereomono--micro2.0Y--
9.
 
Olympus E-M5 IIYstereomonoY-micro2.0Y--
10.
 
Olympus E-M1YstereomonoY-micro2.0Y--
11.
 
Olympus E-M5Ystereomono--mini2.0---
12.
 
Panasonic G95YstereomonoYYmicro2.0Y-Y
13.
 
Panasonic GX8YstereomonoY-micro2.0YY-
14.
 
Panasonic FZ200YstereomonoY-mini2.0---
15.
 
Panasonic FZ150Ystereo---mini2.0---
16.
 
Panasonic FZ100Ystereomono--mini2.0---
17.
 
Sony HX400VYstereomono--micro2.0YY-

Both the E-M5 III and the FZ300 are recent models that are part of the current product line-up. The FZ300 replaced the earlier Panasonic FZ200, while the E-M5 III followed on from the Olympus E-M5 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Panasonic websites.

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Review summary

So how do things add up? Which of the two cameras – the Olympus E-M5 III or the Panasonic FZ300 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Olympus OM-D E-M5 Mark III:

  • More detail: Offers more megapixels (20.2 vs 12MP) with a 30% higher linear resolution.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Features a larger and more technologically advanced imaging sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (2360k vs 1440k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
  • More compact: Is smaller (125x85mm vs 132x92mm) and thus needs less room in the bag.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 4 years and 3 months of technical progress since the FZ300 launch.

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Reasons to prefer the Panasonic Lumix DMC-FZ300:

  • Better video: Provides higher movie framerates (4K/30p versus 4K/30p).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.68x).
  • Faster burst: Shoots at higher frequency (12 vs 10 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Has an integrated lens, whereas the E-M5 III necessitates an extra lens.
  • Longer lasting: Gets more shots (380 versus 310) out of a single battery charge.
  • 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 July 2015).

If the count of individual advantages (bullet points above) is taken as a guide, the E-M5 III is the clear winner of the match-up (15 : 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.

E-M5 III 15:08 FZ300

How about other alternatives? Do the specifications of the Olympus E-M5 III and the Panasonic FZ300 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Superzoom 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the E-M5 III or the FZ300. 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 where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], 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 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-M5 III5/5+82/1004.5/54.5/5 Oct 2019 1,199 i
2.
 
Panasonic FZ300..+ +..4.5/54.5/5 Jul 2015 599 i
3.
 
Canon SX603/5+ +75/1004/54.5/5 Sep 2014 549i
4.
 
Olympus E-M1 III5/5..83/1004.5/54/5 Feb 2020 1,799 i
5.
 
Olympus E-M10 IV4.5/5....4.5/54.5/5 Aug 2020 699 i
6.
 
Olympus E-M1X4.5/5o..4.5/5.. Jan 2019 2,999 i
7.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
8.
 
Olympus PEN-F....82/1004.5/55/5 Jan 2016 1,199i
9.
 
Olympus E-M5 II5/5+ +81/1005/55/5 Feb 2015 1,099i
10.
 
Olympus E-M15/5+ +84/1004.5/54.5/5 Sep 2013 1,399i
11.
 
Olympus E-M54/5+ +80/1004.5/55/5 Feb 2012 1,299i
12.
 
Panasonic G954.5/5+83/1004.5/54.5/5 Apr 2019 999 i
13.
 
Panasonic GX85/5+82/1004.5/54.5/5 Jul 2015 1,199i
14.
 
Panasonic FZ2003/5+ +80/1004.5/54.5/5 Jul 2012 599i
15.
 
Panasonic FZ1503/5+ +76/1004/54.5/5 Aug 2011 499i
16.
 
Panasonic FZ100..+..4.5/54.5/5 Jul 2010 499i
17.
 
Sony HX400V4/5+ +..4/54/5 Feb 2014 499 i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. 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, please note that some of the review sites have changed their methodology and reporting over time.

Olympus E-M5 III:
Check Amazon price
Panasonic FZ300:
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 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: Olympus E-M5 III vs Panasonic FZ300

    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 Olympus E-M5 III Panasonic FZ300
    Camera Type Mirrorless system camera Fixed lens compact camera
    Camera Lens Micro Four Thirds lenses 25-600mm f/2.8
    Launch Date October 2019 July 2015
    Launch Price USD 1,199 USD 599
    Sensor Specs Olympus E-M5 III Panasonic FZ300
    Sensor Technology CMOS BSI-CMOS
    Sensor Format Four Thirds Sensor 1/2.3" Sensor
    Sensor Size 17.3 x 13.0 mm 6.17 x 4.55 mm
    Sensor Area 224.9 mm2 28.0735 mm2
    Sensor Diagonal 21.6 mm 7.7 mm
    Crop Factor 2.0x 5.6x
    Sensor Resolution 20.2 Megapixels 12 Megapixels
    Image Resolution 5184 x 3888 pixels 4000 x 3000 pixels
    Pixel Pitch 3.34 μm 1.53 μm
    Pixel Density 8.96 MP/cm2 42.74 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 200 - 25,600 ISO 100 - 6,400 ISO
    ISO Boost 64 - 25,600 ISO no Enhancement
    Image Processor TruePic VIII Venus
    DXO Sensor Quality (score) .. 38
    DXO Color Depth (bits) .. 19.3
    DXO Dynamic Range (EV) .. 11.0
    DXO Low Light (ISO) .. 97
    Screen Specs Olympus E-M5 III Panasonic FZ300
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.68x 0.70x
    Viewfinder Resolution 2360k dots 1440k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 1040k dots
    LCD Attachment Swivel screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Olympus E-M5 III Panasonic FZ300
    Focus System On-Sensor Phase-detect Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/4000s
    Continuous Shooting 10 shutter flaps/s 12 shutter flaps/s
    Electronic Shutterup to 1/32000sup to 1/16000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationLens-based stabilization
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-II UHS-I
    Connectivity Specs Olympus E-M5 III Panasonic FZ300
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Olympus E-M5 III Panasonic FZ300
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BLS-50 DMW-BLC12
    Battery Life (CIPA)310 shots per charge380 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 125 x 85 x 50 mm
    (4.9 x 3.3 x 2.0 in)
    132 x 92 x 117 mm
    (5.2 x 3.6 x 4.6 in)
    Camera Weight 414 g (14.6 oz) 691 g (24.4 oz)

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