Nikon 1 V2 vs Olympus E-M10 II
The Nikon 1 V2 and the Olympus OM-D E-M10 Mark II are two digital cameras that were officially introduced, respectively, in October 2012 and August 2015. Both the V2 and the E-M10 II are mirrorless interchangeable lens cameras that are based on an one-inch (V2) and a Four Thirds (E-M10 II) sensor. The Nikon has a resolution of 14.2 megapixels, whereas the Olympus provides 15.9 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon 1 V2 and the Olympus OM-D E-M10 Mark II? 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.
The physical size and weight of the Nikon 1 V2 and the Olympus E-M10 II are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. 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.
The V2 can be obtained in two different colors (black, white), while the E-M10 II is available in three color-versions (black, silver, brown).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M10 II is notably larger (11 percent) than the Nikon 1 V2. Moreover, the E-M10 II is substantially heavier (40 percent) than the V2. In this context, it is worth noting that neither the V2 nor the E-M10 II 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
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, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|1.||Nikon 1 V2||109 mm||82 mm||46 mm||278 g||310||n||Oct 2012||799|
|2.||Olympus E-M10 II||120 mm||83 mm||47 mm||390 g||320||n||Aug 2015||649|
|3.||Canon G1 X||117 mm||81 mm||65 mm||534 g||250||n||Jan 2012||799|
|4.||Fujifilm X-M1||117 mm||67 mm||39 mm||330 g||350||n||Jun 2013||699|
|5.||Nikon 1 V3||111 mm||65 mm||33 mm||381 g||310||n||Mar 2014||799|
|6.||Nikon 1 J4||100 mm||60 mm||29 mm||232 g||300||n||Apr 2014||549|
|7.||Nikon 1 V1||113 mm||76 mm||44 mm||383 g||350||n||Sep 2011||799|
|8.||Olympus E-M10 III||122 mm||84 mm||50 mm||410 g||330||n||Aug 2017||649|
|9.||Olympus E-PL8||115 mm||67 mm||38 mm||357 g||350||n||Sep 2016||549|
|10.||Olympus E-M10||119 mm||82 mm||46 mm||396 g||320||n||Jan 2014||699|
|11.||Olympus E-P5||122 mm||69 mm||37 mm||420 g||330||n||May 2013||999|
|12.||Olympus E-PL5||111 mm||64 mm||38 mm||325 g||360||n||Sep 2012||599|
|13.||Panasonic GF6||111 mm||65 mm||38 mm||323 g||340||n||Apr 2013||499|
|14.||Panasonic GF5||108 mm||67 mm||37 mm||267 g||360||n||Apr 2012||499|
|15.||Panasonic GX1||116 mm||68 mm||39 mm||318 g||320||n||Nov 2011||699|
|16.||Ricoh GR||117 mm||61 mm||35 mm||245 g||290||n||Apr 2013||799|
|17.||Sony RX100 II||102 mm||58 mm||38 mm||281 g||350||n||Jun 2013||749|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
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 E-M10 II was launched at a somewhat lower price (by 19 percent) than the V2, which makes it more attractive for photographers on a tight budget. 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.
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. 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 1 V2 features an one-inch sensor and the Olympus E-M10 II a Four Thirds sensor. The sensor area in the E-M10 II is 94 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 2.0. The sensor in the V2 has a native 3:2 aspect ratio, while the one in the E-M10 II offers a 4:3 aspect.
In terms of underlying technology, both cameras are build around CMOS sensors.
With 15.9MP, the E-M10 II offers a higher resolution than the V2 (14.2MP), but the E-M10 II nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 2.86μm for the V2) due to its larger sensor. Moreover, the E-M10 II is a much more recent model (by 2 years and 10 months) than the V2, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the E-M10 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The V2 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Nikon 1 V2 has a native sensitivity range from ISO 160 to ISO 12800. The corresponding ISO settings for the Olympus OM-D E-M10 Mark II are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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. Of the two cameras under consideration, the E-M10 II offers substantially better image quality than the V2 (overall score 23 points higher). The advantage is based on 2.9 bits higher color depth, 1.7 EV in additional dynamic range, and 1.1 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|1.||Nikon 1 V2||1-inch||14.2||4608||3072||1080/60p||20.2||10.8||403||50|
|2.||Olympus E-M10 II||Four Thirds||15.9||4608||3456||1080/60p||23.1||12.5||842||73|
|3.||Canon G1 X||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60|
|5.||Nikon 1 V3||1-inch||18.2||5232||3488||1080/60p||20.8||10.7||384||52|
|6.||Nikon 1 J4||1-inch||18.2||5232||3488||1080/60p||20.8||10.7||426||53|
|7.||Nikon 1 V1||1-inch||10.0||3872||2592||1080/60i||21.3||11||346||54|
|8.||Olympus E-M10 III||Four Thirds||15.9||4608||3456||4K/30p||..||..||..||..|
|9.||Olympus E-PL8||Four Thirds||15.9||4608||3456||1080/30p||..||..||..||..|
|10.||Olympus E-M10||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||884||72|
|11.||Olympus E-P5||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72|
|12.||Olympus E-PL5||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||889||72|
|13.||Panasonic GF6||Four Thirds||15.8||4592||3448||1080/60i||20.7||10.6||622||54|
|14.||Panasonic GF5||Four Thirds||12.0||4000||3000||1080/60i||21.4||11.6||618||61|
|15.||Panasonic GX1||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55|
|17.||Sony RX100 II||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, and both provide the same movie specifications (1080/60p).
Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the E-M10 II offers a substantially higher resolution than the one in the V2 (2360k vs 1440k dots). The adjacent table lists some of the other core features of the Nikon 1 V2 and Olympus E-M10 II along with similar information for a selection of comparators.
|1.||Nikon 1 V2||1440||n||3.0 / 921||fixed||n||1/4000s||15.0||Y||n|
|2.||Olympus E-M10 II||2360||n||3.0 / 1040||tilting||Y||1/4000s||8.0||Y||Y|
|3.||Canon G1 X||optical||n||3.0 / 922||swivel||n||1/4000s||1.9||Y||Y|
|4.||Fujifilm X-M1||none||n||3.0 / 920||tilting||n||1/4000s||5.6||Y||n|
|5.||Nikon 1 V3||optional||n||3.0 / 1037||tilting||Y||1/4000s||60.0||Y||n|
|6.||Nikon 1 J4||none||n||3.0 / 1037||Fixed||Y||1/4000s||60.0||Y||n|
|7.||Nikon 1 V1||1440||n||3.0 / 921||fixed||n||1/4000s||10.0||n||n|
|8.||Olympus E-M10 III||2360||n||3.0 / 1040||tilting||Y||1/4000s||8.6||Y||Y|
|9.||Olympus E-PL8||optional||n||3.0 / 1037||tilting||Y||1/4000s||8.0||n||Y|
|10.||Olympus E-M10||1440||n||3.0 / 1037||tilting||Y||1/4000s||8.0||Y||Y|
|11.||Olympus E-P5||optional||n||3.0 / 1037||tilting||Y||1/8000s||9.0||Y||Y|
|12.||Olympus E-PL5||optional||n||3.0 / 460||tilting||Y||1/4000s||8.0||n||Y|
|13.||Panasonic GF6||none||n||3.0 / 1040||tilting||Y||1/4000s||4.2||Y||n|
|14.||Panasonic GF5||none||n||3.0 / 920||fixed||Y||1/4000s||4.0||Y||n|
|15.||Panasonic GX1||optional||n||3.0 / 460||fixed||Y||1/4000s||4.2||Y||n|
|16.||Ricoh GR||optional||n||3.0 / 1230||fixed||n||1/4000s||4.0||Y||n|
|17.||Sony RX100 II||optional||n||3.0 / 1229||tilting||n||1/2000s||10.0||Y||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The E-M10 II has a touchscreen, while the V2 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
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 Nikon 1 V2 and the Olympus E-M10 II 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 V2 and the E-M10 II write their files to SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 Nikon 1 V2 and Olympus OM-D E-M10 Mark II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Nikon 1 V2||-||stereo / mono||-||-||mini||2.0||-||-||-|
|2.||Olympus E-M10 II||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|3.||Canon G1 X||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|4.||Fujifilm X-M1||Y||stereo / mono||-||-||mini||2.0||Y||-||-|
|5.||Nikon 1 V3||-||stereo / mono||Y||-||mini||2.0||Y||-||-|
|6.||Nikon 1 J4||-||stereo / mono||-||-||mini||2.0||Y||-||-|
|7.||Nikon 1 V1||-||stereo / mono||-||-||mini||2.0||-||-||-|
|8.||Olympus E-M10 III||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|9.||Olympus E-PL8||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|10.||Olympus E-M10||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|11.||Olympus E-P5||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|12.||Olympus E-PL5||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|13.||Panasonic GF6||-||stereo / mono||-||-||mini||2.0||Y||Y||-|
|14.||Panasonic GF5||-||stereo / mono||-||-||mini||2.0||-||-||-|
|15.||Panasonic GX1||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|16.||Ricoh GR||Y||mono / mono||-||-||micro||2.0||-||-||-|
|17.||Sony RX100 II||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
It is notable that the E-M10 II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the V2 does not provide wifi capability.
Both the V2 and the E-M10 II have been discontinued, but can regularly be found used on eBay. The V2 was replaced by the Nikon 1 V3, while the E-M10 II was followed by the Olympus E-M10 III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Olympus websites.
So what is the bottom line? Is the Nikon 1 V2 better than the Olympus E-M10 II or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Nikon 1 V2:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Faster burst: Shoots at higher frequency (15 vs 8 flaps/sec) to capture the decisive moment.
- Less heavy: Is lighter (by 112g or 29 percent) and hence easier to carry around.
- More heavily discounted: Has been available for much longer (launched in October 2012).
Arguments in favor of the Olympus OM-D E-M10 Mark II:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (23 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.9 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (1.7 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.1 stops ISO advantage).
- More detailed viewfinder: Has higher resolution electronic viewfinder (2360k vs 1440k dots).
- More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- More affordable: Was released into a lower priced segment (19 percent cheaper at launch).
- More modern: Reflects 2 years and 10 months of technical progress since the V2 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the E-M10 II is the clear winner of the contest (14 : 5 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. 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.
How about other alternatives? Do the specifications of the Nikon 1 V2 and the Olympus E-M10 II place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing 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 says little about, for example, the shooting experience and imaging performance of the V2 and the E-M10 II in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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.
|1.||Nikon 1 V2||3/5||..||..||..||4.5/5||4/5||Oct 2012||799|
|2.||Olympus E-M10 II||4.5/5||+ +||..||80/100||5/5||5/5||Aug 2015||649|
|3.||Canon G1 X||5/5||+||..||76/100||4/5||4.5/5||Jan 2012||799|
|4.||Fujifilm X-M1||3/5||+||..||77/100||4.5/5||4.5/5||Jun 2013||699|
|5.||Nikon 1 V3||3/5||..||..||76/100||4.5/5||4/5||Mar 2014||799|
|6.||Nikon 1 J4||3/5||..||..||..||4.5/5||4/5||Apr 2014||549|
|7.||Nikon 1 V1||..||+||..||69/100||4.5/5||4/5||Sep 2011||799|
|8.||Olympus E-M10 III||..||+||5/5||80/100||4.5/5||4.5/5||Aug 2017||649|
|9.||Olympus E-PL8||..||..||..||..||4.5/5||4/5||Sep 2016||549|
|10.||Olympus E-M10||4/5||..||..||80/100||5/5||5/5||Jan 2014||699|
|11.||Olympus E-P5||5/5||+ +||..||78/100||4.5/5||5/5||May 2013||999|
|12.||Olympus E-PL5||3/5||+ +||..||..||4.5/5||4.5/5||Sep 2012||599|
|13.||Panasonic GF6||..||+ +||..||..||4.5/5||4.5/5||Apr 2013||499|
|14.||Panasonic GF5||3/5||..||..||..||4.5/5||4.5/5||Apr 2012||499|
|15.||Panasonic GX1||3/5||+||..||77/100||4.5/5||4.5/5||Nov 2011||699|
|16.||Ricoh GR||5/5||..||..||79/100||4.5/5||4.5/5||Apr 2013||799|
|17.||Sony RX100 II||5/5||+ +||..||79/100||4.5/5||4.5/5||Jun 2013||749|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. 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.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon 5D Mark II vs Olympus E-M10 II
- Canon SX50 vs Olympus E-M10 II
- Fujifilm X-Pro3 vs Olympus E-M10 II
- Fujifilm XQ2 vs Nikon 1 V2
- Hasselblad X1D vs Nikon 1 V2
- Nikon 1 V2 vs Pentax K-70
- Nikon 1 V2 vs Pentax KP
- Nikon 1 V2 vs Sony A77
- Nikon 1 V2 vs Sony A7S II
- Nikon D60 vs Olympus E-M10 II
- Olympus E-M10 II vs Sony NEX-7
- Olympus E-M10 II vs YI M1
Specifications: Nikon 1 V2 vs Olympus E-M10 II
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 Model||Nikon 1 V2||Olympus E-M10 II|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Nikon 1 mount lenses||Micro Four Thirds lenses|
|Launch Date||October 2012||August 2015|
|Launch Price||USD 799||USD 649|
|Sensor Specs||Nikon 1 V2||Olympus E-M10 II|
|Sensor Format||1" Sensor||Four Thirds Sensor|
|Sensor Size||13.2 x 8.8 mm||17.3 x 13.0 mm|
|Sensor Area||116.16 mm2||224.9 mm2|
|Sensor Diagonal||15.9 mm||21.6 mm|
|Sensor Resolution||14.2 Megapixels||15.9 Megapixels|
|Image Resolution||4608 x 3072 pixels||4608 x 3456 pixels|
|Pixel Pitch||2.86 μm||3.76 μm|
|Pixel Density||12.19 MP/cm2||7.08 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/60p Video||1080/60p Video|
|ISO Setting||160 - 12,800 ISO||200 - 25,600 ISO|
|ISO Boost||no Enhancement||100 - 25,600 ISO|
|Image Processor||EXPEED 3||TruePic VII|
|DXO Sensor Quality (score)||50||73|
|DXO Color Depth (bits)||20.2||23.1|
|DXO Dynamic Range (EV)||10.8||12.5|
|DXO Low Light (ISO)||403||842|
|Screen Specs||Nikon 1 V2||Olympus E-M10 II|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||1440k dots||2360k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||921k dots||1040k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Nikon 1 V2||Olympus E-M10 II|
|Focus System||On-Sensor Phase-detect||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/4000s|
|Continuous Shooting||15 shutter flaps/s||8 shutter flaps/s|
|Electronic Shutter||up to 1/16000s||up to 1/16000s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Nikon 1 V2||Olympus E-M10 II|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Body Specs||Nikon 1 V2||Olympus E-M10 II|
|Battery Life (CIPA)||310 shots per charge||320 shots per charge|
109 x 82 x 46 mm
(4.3 x 3.2 x 1.8 in)
120 x 83 x 47 mm
(4.7 x 3.3 x 1.9 in)
|Camera Weight||278 g (9.8 oz)||390 g (13.8 oz)|
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.