Panasonic G1 versus Olympus E-420
The Panasonic Lumix DMC-G1 and the Olympus E-420 are two digital cameras that were announced, respectively, in September 2008 and March 2008. The G1 is a mirrorless interchangeable lens camera, while the E-420 is a DSLR. Both cameras are equipped with a Four Thirds sensor. The Panasonic has a resolution of 12 megapixel, whereas the Olympus provides 10 MP.
The physical size and weight of the Panasonic G1 and the Olympus E-420 are illustrated in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. All size dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left side – the G1 – represents the basis for the calculations 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 Olympus E-420 is notably larger (14 percent) than the Panasonic G1. Moreover, the E-420 is markedly heavier (22 percent) than the G1. In this context, it is worth noting that neither the G1 nor the E-420 are weather-sealed.
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. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can find an overview of optics for the two cameras in the Micro Four Thirds Lens Catalog (G1) and the Four Thirds Lens Catalog (E-420). Mirrorless cameras, such as the Panasonic G1, have moreover the advantage that they have a relatively short flange to focal plane distance and can thus use many lenses from other systems via adapters.
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 comparisons there.
|Camera Body Specifications
|Panasonic G1 (⇒ rgt)||124 mm||84 mm||45 mm||360 g||410||no||2008||599||discont.||check|
|Olympus E-420 (⇒ lft)||130 mm||91 mm||53 mm||440 g||500||no||2008||599||discont.||check|
|Canon G16 (⇒ lft | rgt)||109 mm||76 mm||40 mm||356 g||360||no||2013||549||latest||check|
|Olympus E-450 (⇒ lft | rgt)||130 mm||91 mm||53 mm||440 g||500||no||2009||499||discont.||check|
|Olympus E-520 (⇒ lft | rgt)||136 mm||92 mm||68 mm||535 g||750||no||2008||699||discont.||check|
|Olympus E-410 (⇒ lft | rgt)||130 mm||91 mm||53 mm||435 g||500||no||2007||699||discont.||check|
|Olympus E-400 (⇒ lft | rgt)||130 mm||91 mm||53 mm||435 g||500||no||2006||699||discont.||check|
|Panasonic G6 (⇒ lft | rgt)||122 mm||85 mm||71 mm||390 g||340||no||2013||599||discont.||check|
|Panasonic G3 (⇒ lft | rgt)||115 mm||84 mm||47 mm||336 g||..||no||2011||599||discont.||check|
|Panasonic G2 (⇒ lft | rgt)||124 mm||84 mm||74 mm||428 g||..||no||2010||599||discont.||check|
|Panasonic G10 (⇒ lft | rgt)||124 mm||84 mm||74 mm||388 g||..||no||2010||499||discont.||check|
|Panasonic GH1 (⇒ lft | rgt)||124 mm||90 mm||45 mm||385 g||..||no||2009||1,499||discont.||check|
|Panasonic L10 (⇒ lft | rgt)||135 mm||96 mm||78 mm||556 g||450||no||2007||599||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The two cameras under review were launched at the same price and fall into the same 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.
The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its 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 a Four Thirds sensor and have a format factor (sometimes also referred to as "crop factor") of 2.0. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.
While the two cameras under review share the same sensor size, the G1 offers a higher resolution of 12 megapixel, compared with 10 MP of the E-420. This megapixel advantage translates into a 10 percent gain in linear resolution. On the other hand, these sensor specs imply that the G1 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.33μm versus 4.74μm for the E-420). In this context, it should be noted, however, that the G1 is a somewhat more recent model (by 6 months) than the E-420, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.
Consistent information on actual sensor performance is available from DXO Mark for most cameras. 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 image quality. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Panasonic G1 (⇒ rgt)||Four Thirds||12.0||4000||3000||no||21.1||10.3||463||53|
|Olympus E-420 (⇒ lft)||Four Thirds||10.0||3648||2736||no||21.5||10.4||527||56|
|Canon G16 (⇒ lft | rgt)||1/1.7||12.0||4000||3000||1080/60p||21.0||11.7||230||54|
|Olympus E-450 (⇒ lft | rgt)||Four Thirds||10.0||3648||2736||no||21.5||10.5||512||56|
|Olympus E-520 (⇒ lft | rgt)||Four Thirds||10.0||3648||2736||no||21.4||10.4||548||55|
|Olympus E-410 (⇒ lft | rgt)||Four Thirds||10.0||3648||2736||no||21.1||10.0||494||51|
|Olympus E-400 (⇒ lft | rgt)||Four Thirds||10.0||3648||2736||no||-||-||-||-|
|Panasonic G6 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|Panasonic G3 (⇒ lft | rgt)||Four Thirds||15.8||4592||3448||1080/60i||21||10.6||667||56|
|Panasonic G2 (⇒ lft | rgt)||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53|
|Panasonic G10 (⇒ lft | rgt)||Four Thirds||12.0||4000||3000||720/30p||21.2||10.1||411||52|
|Panasonic GH1 (⇒ lft | rgt)||Four Thirds||12.0||4000||3000||1080/24p||21.6||11.6||772||64|
|Panasonic L10 (⇒ lft | rgt)||Four Thirds||10.0||3648||2736||no||21.3||10.8||429||55|
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the G1 has an electronic viewfinder (1440k dots), while the E-420 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 table below summarizes some of the other core capabilities of the Panasonic G1 and Olympus E-420 in connection with corresponding information for a sample of similar cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.
|Panasonic G1 (⇒ rgt)||1440||no||3.0||460||swivel||no||4001||3.0||10.5||no|
|Olympus E-420 (⇒ lft)||optical||no||2.7||215||fixed||no||4000||3.5||12||no|
|Canon G16 (⇒ lft | rgt)||optical||no||3.0||922||fixed||no||4000||2.2||7||no|
|Olympus E-450 (⇒ lft | rgt)||optical||no||2.7||215||fixed||no||4000||3.5||12||no|
|Olympus E-520 (⇒ lft | rgt)||optical||no||2.7||215||fixed||no||4000||3.5||12||YES|
|Olympus E-410 (⇒ lft | rgt)||optical||no||2.5||215||fixed||no||4000||3.0||10||no|
|Olympus E-400 (⇒ lft | rgt)||optical||no||2.5||215||fixed||no||4000||3.0||10||no|
|Panasonic G6 (⇒ lft | rgt)||1440||no||3.0||1036||swivel||YES||4000||7.0||10.5||no|
|Panasonic G3 (⇒ lft | rgt)||1440||no||3.0||460||swivel||YES||4000||4.0||11||no|
|Panasonic G2 (⇒ lft | rgt)||1440||no||3.0||460||swivel||YES||4000||2.6||11||no|
|Panasonic G10 (⇒ lft | rgt)||202||no||3.0||460||fixed||no||4000||2.6||11||no|
|Panasonic GH1 (⇒ lft | rgt)||1440||no||3.0||460||swivel||no||4000||3.0||10.5||no|
|Panasonic L10 (⇒ lft | rgt)||optical||no||2.5||207||swivel||no||4000||3.0||11||no|
Both the G1 and the E-420 have been discontinued, but can regularly be found used on ebay. The G1 was replaced by the Panasonic G2, while the E-420 does not have a direct successor.
So how do things add up? Which of the two cameras – the Panasonic G1 or the Olympus E-420 – has the upper hand? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Panasonic Lumix DMC-G1:
- More detail: Offers more megapixels (12 vs 10MP) with a 10% higher linear resolution.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (460k vs 215k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Faster shutter: Has a higher mechanical shutter speed (4001/sec vs 4000/sec) to freeze action.
- More compact: Is smaller (124x84mm vs 130x91mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 80g or 18 percent) and hence easier to carry around.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- More modern: Is somewhat more recent (announced 6 months after the E-420).
Reasons to prefer the Olympus E-420:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Longer lasting: Gets more shots (500 versus 410) out of a single battery charge.
- More heavily discounted: Has been on the market for longer (launched in March 2008).
If the count of individual advantages (bullet points above) is taken as a guide, the G1 is the clear winner of the match-up (10 : 3 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.
In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the G1 or the E-420. 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 why expert reviews are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites. The full reviews are available, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Panasonic G1 (⇒ rgt)||88/100 HiRec||70/100 HiRec||4/5||4.5/5||4.5/5||2008||599||discont.||check|
|Olympus E-420 (⇒ lft)||85/100||HiRec||4/5||reviewed||4.5/5||2008||599||discont.||check|
|Canon G16 (⇒ lft | rgt)||Rec||-||4.5/5||4.5/5||4.5/5||2013||549||latest||check|
|Olympus E-450 (⇒ lft | rgt)||-||-||4/5||-||4/5||2009||499||discont.||check|
|Olympus E-520 (⇒ lft | rgt)||87/100||HiRec||4.5/5||4/5||4.5/5||2008||699||discont.||check|
|Olympus E-410 (⇒ lft | rgt)||86/100||HiRec||4/5||reviewed||4.5/5||2007||699||discont.||check|
|Olympus E-400 (⇒ lft | rgt)||85/100||-||4/5||-||4/5||2006||699||discont.||check|
|Panasonic G6 (⇒ lft | rgt)||HiRec||-||5/5||-||4.5/5||2013||599||discont.||check|
|Panasonic G3 (⇒ lft | rgt)||88/100 HiRec||75/100 Silver||4.5/5||4.5/5||5/5||2011||599||discont.||check|
|Panasonic G2 (⇒ lft | rgt)||-||72/100 Silver||4/5||4/5||4.5/5||2010||599||discont.||check|
|Panasonic G10 (⇒ lft | rgt)||-||70/100||4/5||-||4/5||2010||499||discont.||check|
|Panasonic GH1 (⇒ lft | rgt)||89/100 HiRec||72/100 HiRec||4.5/5||5/5||4.5/5||2009||1,499||discont.||check|
|Panasonic L10 (⇒ lft | rgt)||85/100||Rec||3.5/5||reviewed||4/5||2007||599||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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If the camera you are interested in is not available, kindly get in touch, and I will try to update the database with the necessary infos.
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