Nikon D7500 vs Olympus E-520
The Nikon D7500 and the Olympus E-520 are two digital cameras that were revealed to the public, respectively, in April 2017 and May 2008. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D7500) and a Four Thirds (E-520) sensor. The Nikon has a resolution of 20.7 megapixels, whereas the Olympus provides 10 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 D7500 and the Olympus E-520? 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 D7500 and the Olympus E-520 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.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-520 is notably smaller (12 percent) than the Nikon D7500. Moreover, the E-520 is markedly lighter (26 percent) than the D7500. It is worth mentioning in this context that the D7500 is splash and dust resistant, while the E-520 does not feature any corresponding weather-sealing.
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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Nikon Lens Catalog (D7500) and the Four Thirds Lens Catalog (E-520).
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, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Nikon D7500||5.4 in||4.1 in||2.9 in||25.4 oz||950||Y||Apr 2017||1,299|
|Olympus E-520||5.4 in||3.6 in||2.7 in||18.9 oz||750||n||May 2008||699|
|Canon 80D||5.5 in||4.1 in||3.1 in||25.8 oz||960||Y||Feb 2016||1,199|
|Nikon D5600||4.9 in||3.8 in||2.8 in||16.4 oz||970||n||Nov 2016||699|
|Nikon D5||6.3 in||6.3 in||3.6 in||49.9 oz||3780||Y||Jan 2016||6,499|
|Nikon D500||5.8 in||4.5 in||3.2 in||30.3 oz||1240||Y||Jan 2016||1,999|
|Nikon D3400||4.9 in||3.9 in||3.0 in||15.7 oz||1200||n||Aug 2016||499|
|Nikon D7200||5.4 in||4.2 in||3.0 in||27.0 oz||1110||Y||Mar 2015||1,199|
|Nikon D7100||5.4 in||4.2 in||3.0 in||27.0 oz||950||Y||Feb 2013||1,199|
|Nikon D610||5.6 in||4.4 in||3.2 in||30.0 oz||900||Y||Oct 2013||1,999|
|Nikon D7000||5.2 in||4.1 in||3.0 in||27.5 oz||1050||Y||Sep 2010||1,499|
|Nikon D90||5.2 in||4.1 in||3.0 in||24.8 oz||850||n||Aug 2008||1,299|
|Olympus E-600||5.1 in||3.7 in||2.4 in||18.9 oz||500||n||Aug 2009||449|
|Olympus E-620||5.1 in||3.7 in||2.4 in||18.4 oz||500||n||Feb 2009||699|
|Olympus E-420||5.1 in||3.6 in||2.1 in||15.5 oz||500||n||Mar 2008||599|
|Olympus E-410||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Mar 2007||699|
|Olympus E-510||5.4 in||3.6 in||2.7 in||19.0 oz||750||n||Mar 2007||799|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
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 E-520 was launched at a markedly lower price (by 46 percent) than the D7500, which puts it into a different market segment. 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.
The size of the imaging sensor is a crucial determinant 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Nikon D7500 features an APS-C sensor and the Olympus E-520 a Four Thirds sensor. The sensor area in the E-520 is 39 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the D7500 has a native 3:2 aspect ratio, while the one in the E-520 offers a 4:3 aspect.
With 20.7MP, the D7500 offers a higher resolution than the E-520 (10MP), but the D7500 has smaller individual pixels (pixel pitch of 4.22μm versus 4.74μm for the E-520). However, the D7500 is a much more recent model (by 8 years and 11 months) than the E-520, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the D7500 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Nikon D7500 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D7500 for good quality output (200 dots per inch) amounts to 27.8 x 18.6 inches or 70.7 x 47.1 cm, for very good quality (250 dpi) 22.3 x 14.8 inches or 56.6 x 37.7 cm, and for excellent quality (300 dpi) 18.6 x 12.4 inches or 47.1 x 31.4 cm. The corresponding values for the Olympus E-520 are 18.2 x 13.7 inches or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inches or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inches or 30.9 x 23.2 cm for excellent quality prints.
The Nikon D7500 has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-1640000. The corresponding ISO settings for the Olympus E-520 are ISO 100 to ISO 1600 (no boost).
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"). Of the two cameras under review, the D7500 provides substantially higher image quality than the E-520, with an overall score that is 31 points higher. This advantage is based on 2.9 bits higher color depth, 3.6 EV in additional dynamic range, and 1.4 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.
|Olympus E-520||Four Thirds||10.0||3648||2736||none||21.4||10.4||548||55|
|Nikon D5||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|Olympus E-600||Four Thirds||12.2||4032||3024||none||21.5||10.3||541||55|
|Olympus E-620||Four Thirds||12.2||4032||3024||none||21.3||10.3||536||55|
|Olympus E-420||Four Thirds||10.0||3648||2736||none||21.5||10.4||527||56|
|Olympus E-410||Four Thirds||10.0||3648||2736||none||21.1||10.0||494||51|
|Olympus E-510||Four Thirds||10.0||3648||2736||none||21.2||10.0||442||52|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The D7500 indeed provides movie recording capabilities, while the E-520 does not. The highest resolution format that the D7500 can use is 4K/30p.
Beyond body and sensor, cameras can and do differ across a range of features. The D7500 and the E-520 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the D7500 offers a wider field of view (100%) than the one in the E-520 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the D7500 has a higher magnification (0.61x vs 0.46x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Nikon D7500, the Olympus E-520, and comparable cameras.
One feature that is present on the D7500, but is missing on the E-520 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.
The Nikon D7500 has 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.
The D7500 writes its imaging data to SDXC cards, while the E-520 uses Compact Flash or xD Picture cards. The E-520 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D7500 only has one slot.
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 D7500 and Olympus E-520 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
It is notable that the D7500 offers wifi support, while the E-520 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
The D7500 is a recent model that features in the current product line-up of Nikon. In contrast, the E-520 has been discontinued (but can be found pre-owned on eBay). There has not been a direct replacement model for the E-520 from Olympus. 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 how do things add up? Which of the two cameras – the Nikon D7500 or the Olympus E-520 – 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.
Arguments in favor of the Nikon D7500:
- More detail: Offers more megapixels (20.7 vs 10MP) with a 47% higher linear resolution.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (31 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (2.9 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (3.6 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (1.4 stops ISO advantage).
- Broader imaging potential: Can record not only still images but also 4K/30p movies.
- More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.61x vs 0.46x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 2.7") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (922k vs 215k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (8 vs 3.5 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Can take more shots (950 versus 750) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More modern: Reflects 8 years and 11 months of technical progress since the E-520 launch.
Reasons to prefer the Olympus E-520:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More compact: Is smaller (136x92mm vs 136x104mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 185g or 26 percent) and is thus easier to take along.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More affordable: Was introduced into a lower priced category (46 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in May 2008).
If the count of individual advantages (bullet points above) is taken as a guide, the D7500 is the clear winner of the match-up (22 : 7 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.
How about other alternatives? Do the specifications of the Nikon D7500 and the Olympus E-520 place the cameras among the top in their class? Find out in the latest Best DSLR 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the D7500 or the E-520. 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 adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Nikon D7500||+ +||86/100||5/5||4.5/5||4.5/5||Apr 2017||1,299|
|Olympus E-520||87/100||+ +||4.5/5||4/5||4.5/5||May 2008||699|
|Canon 80D||+ +||84/100||4.5/5||4.5/5||4.5/5||Feb 2016||1,199|
|Nikon D5600||..||79/100||4.5/5||4.5/5||4/5||Nov 2016||699|
|Nikon D5||..||89/100||4.5/5||5/5||5/5||Jan 2016||6,499|
|Nikon D500||+ +||91/100||4.5/5||5/5||5/5||Jan 2016||1,999|
|Nikon D3400||+||76/100||4/5||4.5/5||4.5/5||Aug 2016||499|
|Nikon D7200||+ +||84/100||4.5/5||4/5||4.5/5||Mar 2015||1,199|
|Nikon D7100||+ +||85/100||4.5/5||5/5||4.5/5||Feb 2013||1,199|
|Nikon D610||+ +||87/100||4.5/5||4.5/5||4.5/5||Oct 2013||1,999|
|Nikon D7000||..||80/100||4.5/5||5/5||4.5/5||Sep 2010||1,499|
|Nikon D90||+ +||+ +||4/5||5/5||4.5/5||Aug 2008||1,299|
|Olympus E-600||..||..||..||..||4.5/5||Aug 2009||449|
|Olympus E-620||88/100||72/100||4.5/5||o||5/5||Feb 2009||699|
|Olympus E-420||85/100||+ +||4/5||o||4.5/5||Mar 2008||599|
|Olympus E-410||86/100||+ +||4/5||o||4.5/5||Mar 2007||699|
|Olympus E-510||89/100||+ +||3.5/5||o||4.5/5||Mar 2007||799|
|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.
Other camera comparisons
Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, 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.
- Canon 700D vs Olympus E-520
- Canon 800D vs Olympus E-520
- Canon M5 vs Nikon D7500
- Fujifilm X-T3 vs Olympus E-520
- Leica T vs Nikon D7500
- Leica X1 vs Olympus E-520
- Nikon D2Xs vs Olympus E-520
- Nikon D7500 vs Olympus E-PM1
- Nikon D7500 vs Olympus PEN-F
- Nikon D7500 vs Panasonic FZ1000 II
- Nikon D7500 vs Panasonic S1
- Olympus E-520 vs Samsung NX1
Specifications: Nikon D7500 vs Olympus E-520
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 D7500||Olympus E-520|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Four Thirds lenses|
|Launch Date||April 2017||May 2008|
|Launch Price||USD 1,299||USD 699|
|Sensor Specs||Nikon D7500||Olympus E-520|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||23.5 x 15.7 mm||17.3 x 13.0 mm|
|Sensor Area||368.95 mm2||224.9 mm2|
|Sensor Diagonal||28.3 mm||21.6 mm|
|Sensor Resolution||20.7 Megapixels||10 Megapixels|
|Image Resolution||5568 x 3712 pixels||3648 x 2736 pixels|
|Pixel Pitch||4.22 μm||4.74 μm|
|Pixel Density||5.60 MP/cm2||4.44 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||no Video|
|ISO Setting||100 - 51,200 ISO||100 - 1,600 ISO|
|ISO Boost||50 - 1,640,000 ISO||no Enhancement|
|Image Processor||EXPEED 5||TruePic III|
|DXO Sensor Quality (score)||86||55|
|DXO Color Depth (bits)||24.3||21.4|
|DXO Dynamic Range (EV)||14.0||10.4|
|DXO Low Light (ISO)||1483||548|
|Screen Specs||Nikon D7500||Olympus E-520|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||95%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2inch||2.7inch|
|LCD Resolution||922k dots||215k dots|
|LCD Attachment||Tilting screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Nikon D7500||Olympus E-520|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||8 shutter flaps/s||3.5 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||CF or XD cards|
|Second Storage Option||Single card slot||Dual card slots|
|Connectivity Specs||Nikon D7500||Olympus E-520|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Headphone Socket||Headphone port||no Headphone port|
|Wifi Support||Wifi built-in||no Wifi|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Nikon D7500||Olympus E-520|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||950 shots per charge||750 shots per charge|
136 x 104 x 73 mm
(5.4 x 4.1 x 2.9 in)
136 x 92 x 68 mm
(5.4 x 3.6 x 2.7 in)
|Camera Weight||720 g (25.4 oz)||535 g (18.9 oz)|
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