Panasonic G1 versus Olympus E-420
The Panasonic Lumix DMC-G1 and the Olympus E-420 are two digital cameras that were revealed to the public, 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. 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 G1 vs Olympus E-420
An illustration of the physical size and weight of the Panasonic G1 and the Olympus E-420 is provided 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 camera comparisons there.
|Camera Body Specifications|
|Panasonic G1»||4.9 in||3.3 in||1.8 in||12.7 oz||410||n||Sep 2008||599||-|
|Olympus E-420«||5.1 in||3.6 in||2.1 in||15.5 oz||500||n||Mar 2008||599||-|
|Olympus E-450« »||5.1 in||3.6 in||2.1 in||15.5 oz||500||n||Mar 2009||499||-|
|Olympus E-520« »||5.4 in||3.6 in||2.7 in||18.9 oz||750||n||May 2008||699||-|
|Olympus E-410« »||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Mar 2007||699||-|
|Olympus E-400« »||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Sep 2006||699||-|
|Panasonic GF6« »||4.4 in||2.6 in||1.5 in||11.4 oz||340||n||Apr 2013||499||-|
|Panasonic GF5« »||4.3 in||2.6 in||1.5 in||9.4 oz||360||n||Apr 2012||499||-|
|Panasonic GF3« »||4.3 in||2.6 in||1.3 in||9.3 oz||300||n||Jun 2011||549||-|
|Panasonic G3« »||4.5 in||3.3 in||1.9 in||11.9 oz||270||n||May 2011||599||-|
|Panasonic GF2« »||4.4 in||2.7 in||1.3 in||10.9 oz||300||n||Nov 2010||549||-|
|Panasonic G2« »||4.9 in||3.3 in||2.9 in||15.1 oz||360||n||Mar 2010||599||-|
|Panasonic G10« »||4.9 in||3.3 in||2.9 in||13.7 oz||380||n||Mar 2010||499||-|
|Panasonic GF1« »||4.7 in||2.8 in||1.4 in||13.6 oz||380||n||Sep 2009||749||-|
|Panasonic GH1« »||4.9 in||3.5 in||1.8 in||13.6 oz||300||n||Mar 2009||1,499||-|
|Panasonic L10« »||5.3 in||3.8 in||3.1 in||19.6 oz||450||n||Aug 2007||599||-|
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 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.
Sensor comparison: Panasonic G1 vs Olympus E-420
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 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. 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 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.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Panasonic G1»||Four Thirds||12.0||4000||3000||-||21.1||10.3||463||53|
|Olympus E-420«||Four Thirds||10.0||3648||2736||-||21.5||10.4||527||56|
|Olympus E-450« »||Four Thirds||10.0||3648||2736||-||21.5||10.5||512||56|
|Olympus E-520« »||Four Thirds||10.0||3648||2736||-||21.4||10.4||548||55|
|Olympus E-410« »||Four Thirds||10.0||3648||2736||-||21.1||10.0||494||51|
|Olympus E-400« »||Four Thirds||10.0||3648||2736||-||-||-||-||-|
|Panasonic GF6« »||Four Thirds||15.8||4592||3448||1080/60i||20.7||10.6||622||54|
|Panasonic GF5« »||Four Thirds||12.0||4000||3000||1080/60i||21.4||11.6||618||61|
|Panasonic GF3« »||Four Thirds||12.0||4000||3000||1080/60i||20.6||10.0||458||49|
|Panasonic G3« »||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56|
|Panasonic GF2« »||Four Thirds||12.0||4000||3000||1080/60i||21.2||10.3||506||54|
|Panasonic G2« »||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53|
|Panasonic G10« »||Four Thirds||12.0||4000||3000||720/30p||21.2||10.1||411||52|
|Panasonic GF1« »||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||513||54|
|Panasonic GH1« »||Four Thirds||12.0||4000||3000||1080/24p||21.6||11.6||772||64|
|Panasonic L10« »||Four Thirds||10.0||3648||2736||-||21.3||10.8||429||55|
Feature comparison: Panasonic G1 vs Olympus E-420
Beyond body and sensor, cameras can and do differ across a range 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 needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.
|Olympus E-450« »||optical||n||2.7||215||fixed||n||4000||3.5||Y||n|
|Olympus E-520« »||optical||n||2.7||215||fixed||n||4000||3.5||Y||Y|
|Olympus E-410« »||optical||n||2.5||215||fixed||n||4000||3.0||Y||n|
|Olympus E-400« »||optical||n||2.5||215||fixed||n||4000||3.0||Y||n|
|Panasonic GF6« »||-||n||3.0||1040||tilting||Y||4000||4.2||Y||n|
|Panasonic GF5« »||-||n||3.0||920||fixed||Y||4000||4.0||Y||n|
|Panasonic GF3« »||-||n||3.0||460||fixed||Y||4000||3.2||Y||n|
|Panasonic G3« »||1440||n||3.0||460||swivel||Y||4000||4.0||Y||n|
|Panasonic GF2« »||-||n||3.0||460||fixed||Y||4000||2.6||Y||n|
|Panasonic G2« »||1440||n||3.0||460||swivel||Y||4000||2.6||Y||n|
|Panasonic G10« »||202||n||3.0||460||fixed||n||4000||2.6||Y||n|
|Panasonic GF1« »||-||n||3.0||460||fixed||n||4000||3.0||Y||n|
|Panasonic GH1« »||1440||n||3.0||460||swivel||n||4000||3.0||Y||n|
|Panasonic L10« »||optical||n||2.5||207||swivel||n||4000||3.0||Y||n|
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.
Review summary: Panasonic G1 vs Olympus E-420
So how do things add up? Is there a clear favorite between the Panasonic G1 and the Olympus E-420? A synthesis of the relative strong points of each of the models is listed below.
Advantages 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 swivel screen for odd-angle shots in portrait or landscape orientation.
- Faster shutter: Has 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.
- Faster burst: Shoots at higher frequency (3.5 vs 3 flaps/sec) to capture the decisive moment.
- 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 relative strengths (bullet points above) is taken as a measure, the G1 is the clear winner of the match-up (10 : 4 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 says nothing about, for example, the handling, responsiveness, and overall imaging quality of the G1 and the E-420 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 where reviews by experts come in. 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). The detailed reviews can be accessed by clicking on the site logo in the table header.
|Panasonic G1»||HiRec||70/100||4/5||4.5/5||4.5/5||Sep 2008||599||-|
|Olympus E-420«||85/100||HiRec||4/5||rev||4.5/5||Mar 2008||599||-|
|Olympus E-450« »||-||-||4/5||-||4/5||Mar 2009||499||-|
|Olympus E-520« »||87/100||HiRec||4.5/5||4/5||4.5/5||May 2008||699||-|
|Olympus E-410« »||86/100||HiRec||4/5||rev||4.5/5||Mar 2007||699||-|
|Olympus E-400« »||85/100||-||4/5||-||4/5||Sep 2006||699||-|
|Panasonic GF6« »||HiRec||-||4.5/5||-||4.5/5||Apr 2013||499||-|
|Panasonic GF5« »||-||-||4.5/5||4/5||4.5/5||Apr 2012||499||-|
|Panasonic GF3« »||82/100||71/100||4.5/5||4.5/5||4/5||Jun 2011||549||-|
|Panasonic G3« »||HiRec||75/100||4.5/5||4.5/5||5/5||May 2011||599||-|
|Panasonic GF2« »||82/100||70/100||4.5/5||4.5/5||4.5/5||Nov 2010||549||-|
|Panasonic G2« »||-||72/100||4/5||4/5||4.5/5||Mar 2010||599||-|
|Panasonic G10« »||-||70/100||4/5||-||4/5||Mar 2010||499||-|
|Panasonic GF1« »||85/100||69/100||4.5/5||4.5/5||4.5/5||Sep 2009||749||-|
|Panasonic GH1« »||HiRec||72/100||4.5/5||5/5||4.5/5||Mar 2009||1,499||-|
|Panasonic L10« »||85/100||Rec||3.5/5||rev||4/5||Aug 2007||599||-|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
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