Panasonic GM1 versus Panasonic FZ1000
The Panasonic Lumix DMC-GM1 and the Panasonic Lumix DMC-FZ1000 are two digital cameras that were announced, respectively, in October 2013 and June 2014. The GM1 is a mirrorless interchangeable lens camera, while the FZ1000 is a fixed lens compact. The cameras are based on a Four Thirds (GM1) and an one-inch (FZ1000) sensor. The GM1 has a resolution of 15.8 megapixel, whereas the FZ1000 provides 20 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: Panasonic GM1 vs Panasonic FZ1000
The side-by-side display below illustrates the physical size and weight of the Panasonic GM1 and the Panasonic FZ1000. Three consecutive perspectives from the front, the top, and the back are presented. All width, height and depth measures are rounded to the nearest millimeter. You can also toggle the display 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 GM1 – represents the basis or 100 percent across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic FZ1000 is considerably larger (149 percent) than the Panasonic GM1. In this context, it is worth noting that neither the GM1 nor the FZ1000 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the FZ1000 has a lens build in, whereas the GM1 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can find an overview of optics for the GM1 and their specifications in the Micro Four Thirds Lens Catalog.
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
|Panasonic GM1 (⇒ rgt)||99 mm||55 mm||30 mm||204 g||230||no||2013||749||discont.||check|
|Panasonic FZ1000 (⇒ lft)||137 mm||99 mm||131 mm||831 g||360||no||2014||899||discont.||check|
|Canon G1 X Mark II (⇒ lft | rgt)||116 mm||74 mm||66 mm||553 g||240||no||2014||799||latest||check|
|Olympus E-M10 (⇒ lft | rgt)||119 mm||82 mm||46 mm||396 g||320||no||2014||699||discont.||check|
|Panasonic FZ2500 (⇒ lft | rgt)||138 mm||102 mm||135 mm||915 g||350||no||2016||1,199||latest||check|
|Panasonic GX85 (⇒ lft | rgt)||122 mm||71 mm||44 mm||426 g||290||no||2016||799||latest||check|
|Panasonic G7 (⇒ lft | rgt)||125 mm||86 mm||77 mm||410 g||350||no||2015||649||discont.||check|
|Panasonic GH4 (⇒ lft | rgt)||133 mm||93 mm||84 mm||560 g||500||YES||2014||1,499||discont.||check|
|Panasonic GM5 (⇒ lft | rgt)||99 mm||60 mm||36 mm||211 g||220||no||2014||749||discont.||check|
|Panasonic LX100 (⇒ lft | rgt)||115 mm||66 mm||55 mm||393 g||300||no||2014||899||latest||check|
|Panasonic G6 (⇒ lft | rgt)||122 mm||85 mm||71 mm||390 g||340||no||2013||599||discont.||check|
|Panasonic GX7 (⇒ lft | rgt)||123 mm||71 mm||55 mm||402 g||350||no||2013||999||discont.||check|
|Ricoh GR (⇒ lft | rgt)||117 mm||61 mm||35 mm||245 g||290||no||2013||799||discont.||check|
|Sony RX100 IV (⇒ lft | rgt)||102 mm||58 mm||41 mm||298 g||280||no||2015||999||discont.||check|
|Sony RX100 III (⇒ lft | rgt)||102 mm||58 mm||41 mm||290 g||320||no||2014||799||discont.||check|
|Sony RX100 II (⇒ lft | rgt)||102 mm||58 mm||38 mm||281 g||350||no||2013||749||discont.||check|
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. 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: Panasonic GM1 vs Panasonic FZ1000
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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Panasonic GM1 features a Four Thirds sensor and the Panasonic FZ1000 an one-inch sensor. The sensor area in the FZ1000 is 48 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 2.7. The sensor in the GM1 has a native 4:3 aspect ratio, while the one in the FZ1000 offers a 3:2 aspect.
Despite having a smaller sensor, the FZ1000 offers a higher resolution of 20 megapixel, compared with 15.8 MP of the GM1. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 3.77μm for the GM1). However, it should be noted that the FZ1000 is a somewhat more recent model (by 7 months) than the GM1, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.
For most cameras, data on sensor performance has been reported by DXO Mark. 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. The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Panasonic GM1 (⇒ rgt)||Four Thirds||15.8||4592||3448||1080/60i||22.3||11.7||660||66|
|Panasonic FZ1000 (⇒ lft)||1-inch||20.0||5472||3648||4K/30p||22.1||11.7||517||64|
|Canon G1 X Mark II (⇒ lft | rgt)||1.5-inch||13.0||4160||3120||1080/30p||21.5||10.8||581||58|
|Olympus E-M10 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||884||72|
|Panasonic FZ2500 (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|Panasonic GX85 (⇒ lft | rgt)||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|Panasonic G7 (⇒ lft | rgt)||Four Thirds||15.8||4592||3448||4K/30p||-||-||-||-|
|Panasonic GH4 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||4K/30p||23.2||12.8||791||74|
|Panasonic GM5 (⇒ lft | rgt)||Four Thirds||15.8||4592||3448||1080/60p||22.1||11.7||721||66|
|Panasonic LX100 (⇒ lft | rgt)||Four Thirds||12.7||4112||3088||4K/30p||22.3||12.5||553||67|
|Panasonic G6 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|Panasonic GX7 (⇒ lft | rgt)||Four Thirds||15.8||4592||3448||1080/60p||22.6||12.2||718||70|
|Ricoh GR (⇒ lft | rgt)||APS-C||16.1||4928||3264||1080/30p||23.6||13.5||972||78|
|Sony RX100 IV (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70|
|Sony RX100 III (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||22.4||12.3||495||67|
|Sony RX100 II (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||22.5||12.4||483||67|
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 FZ1000 provides a better video resolution than the GM1. It can shoot movie footage at 4K/30p, while the GM1 is limited to 1080/60i.
Feature comparison: Panasonic GM1 vs Panasonic FZ1000
Apart from body and sensor, cameras can and do differ across a range of features. For example, the FZ1000 has an electronic viewfinder (2359k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GM1 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Panasonic GM1, the Panasonic FZ1000, and comparable cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.
|Panasonic GM1 (⇒ rgt)||no||no||3.0||1036||fixed||YES||500||5.0||4||no|
|Panasonic FZ1000 (⇒ lft)||2359||no||3.0||921||swivel||no||4000||12.0||13.5||YES|
|Canon G1 X Mark II (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||5.2||6.8||YES|
|Olympus E-M10 (⇒ lft | rgt)||1440||no||3.0||1037||tilting||YES||4000||8.0||5.8||YES|
|Panasonic FZ2500 (⇒ lft | rgt)||2360||no||3.0||1040||swivel||YES||4000||12.0||13.2||YES|
|Panasonic GX85 (⇒ lft | rgt)||2765||no||3.0||1040||tilting||YES||4000||8.0||6||YES|
|Panasonic G7 (⇒ lft | rgt)||2360||no||3.0||1040||swivel||YES||4000||7.0||9.3||no|
|Panasonic GH4 (⇒ lft | rgt)||2359||no||3.0||1036||swivel||YES||8000||12.0||17||no|
|Panasonic GM5 (⇒ lft | rgt)||1166||no||3.0||921||fixed||YES||500||5.8||no||no|
|Panasonic LX100 (⇒ lft | rgt)||2764||no||3.0||921||fixed||no||4000||11.0||no||YES|
|Panasonic G6 (⇒ lft | rgt)||1440||no||3.0||1036||swivel||YES||4000||7.0||10.5||no|
|Panasonic GX7 (⇒ lft | rgt)||2760||no||3.0||1040||tilting||YES||8000||5.0||7||YES|
|Ricoh GR (⇒ lft | rgt)||no||no||3.0||1230||fixed||no||4000||4.0||5.4||no|
|Sony RX100 IV (⇒ lft | rgt)||2359||no||3.0||1228||tilting||no||2000||16.0||10.2||YES|
|Sony RX100 III (⇒ lft | rgt)||1440||no||3.0||1229||tilting||no||2000||10.0||YES||YES|
|Sony RX100 II (⇒ lft | rgt)||no||no||3.0||1229||tilting||no||2000||10.0||15||YES|
Both the GM1 and the FZ1000 have been discontinued, but can regularly be found used on eBay. The GM1 was replaced by the Panasonic GM5, while the FZ1000 was followed by the Panasonic FZ2500.
Review summary: Panasonic GM1 vs Panasonic FZ1000
So what is the bottom line? Is there a clear favorite between the Panasonic GM1 and the Panasonic FZ1000? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Panasonic Lumix DMC-GM1:
- Better low-light sensitivity: Requires less light for good images (0.4 stops ISO advantage).
- More detailed LCD: Has a higher resolution rear screen (1036k vs 921k dots).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- More compact: Is smaller (99x55mm vs 137x99mm) and thus needs less room in the bag.
- More heavily discounted: Has been on the market for longer (launched in October 2013).
Reasons to prefer the Panasonic Lumix DMC-FZ1000:
- More detail: Has more megapixels (20 vs 15.8MP), which boosts linear resolution by 15%.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
- Easier framing: Has an electronic viewfinder for image framing and settings control.
- More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (4000/sec vs 500/sec) to freeze action.
- Faster burst: Shoots at higher frequency (12 vs 5 flaps/sec) to capture the decisive moment.
- Ready to shoot: Has an integrated lens, whereas the GM1 necessitates an extra lens.
- Longer lasting: Gets more shots (360 versus 230) out of a single battery charge.
- Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
- More modern: Was introduced somewhat (7 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the FZ1000 is the clear winner of the contest (10 : 6 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the GM1 or the FZ1000. 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. This is where reviews by experts come in. The table below summarizes the assessments of some of the best known camera review sites. The full reviews are available, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Panasonic GM1 (⇒ rgt)||Rec||78/100 Gold||5/5||4.5/5||4.5/5||2013||749||discont.||check|
|Panasonic FZ1000 (⇒ lft)||HiRec||82/100 Gold||4.5/5||4.5/5||4.5/5||2014||899||discont.||check|
|Canon G1 X Mark II (⇒ lft | rgt)||Rec||77/100 Silver||4/5||4/5||4.5/5||2014||799||latest||check|
|Olympus E-M10 (⇒ lft | rgt)||-||80/100 Gold||5/5||4.5/5||5/5||2014||699||discont.||check|
|Panasonic FZ2500 (⇒ lft | rgt)||Rec||82/100 Silver||4.5/5||4.5/5||5/5||2016||1,199||latest||check|
|Panasonic GX85 (⇒ lft | rgt)||HiRec||82/100 Silver||5/5||4.5/5||5/5||2016||799||latest||check|
|Panasonic G7 (⇒ lft | rgt)||HiRec||80/100 Silver||5/5||4.5/5||4.5/5||2015||649||discont.||check|
|Panasonic GH4 (⇒ lft | rgt)||HiRec||85/100 Gold||5/5||5/5||5/5||2014||1,499||discont.||check|
|Panasonic GM5 (⇒ lft | rgt)||Rec||77/100 Silver||5/5||5/5||4.5/5||2014||749||discont.||check|
|Panasonic LX100 (⇒ lft | rgt)||HiRec||85/100 Gold||5/5||4/5||5/5||2014||899||latest||check|
|Panasonic G6 (⇒ lft | rgt)||HiRec||-||5/5||-||4.5/5||2013||599||discont.||check|
|Panasonic GX7 (⇒ lft | rgt)||Rec||79/100 Silver||5/5||4.5/5||5/5||2013||999||discont.||check|
|Ricoh GR (⇒ lft | rgt)||-||79/100 Gold||4.5/5||4.5/5||4.5/5||2013||799||discont.||check|
|Sony RX100 IV (⇒ lft | rgt)||HiRec||85/100 Gold||4/5||4.5/5||4.5/5||2015||999||discont.||check|
|Sony RX100 III (⇒ lft | rgt)||HiRec||82/100 Gold||4.5/5||4.5/5||5/5||2014||799||discont.||check|
|Sony RX100 II (⇒ lft | rgt)||HiRec||79/100 Silver||4.5/5||5/5||4.5/5||2013||749||discont.||check|
The review scores listed above should be treated 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.
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