Nikon D7500 vs Olympus E-620
The Nikon D7500 and the Olympus E-620 are two digital cameras that were announced, respectively, in April 2017 and February 2009. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D7500) and a Four Thirds (E-620) sensor. The Nikon has a resolution of 20.7 megapixels, whereas the Olympus provides 12.2 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-620? 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-620 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size 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-620 is notably smaller (14 percent) than the Nikon D7500. Moreover, the E-620 is markedly lighter (28 percent) than the D7500. It is worth mentioning in this context that the D7500 is splash and dust resistant, while the E-620 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-620).
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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 D7500||136 mm||104 mm||73 mm||720 g||950||Y||Apr 2017||1,299|
|2.||Olympus E-620||130 mm||94 mm||60 mm||521 g||500||n||Feb 2009||699|
|3.||Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199|
|4.||Nikon D5600||124 mm||97 mm||70 mm||465 g||970||n||Nov 2016||699|
|5.||Nikon D5||160 mm||159 mm||92 mm||1415 g||3780||Y||Jan 2016||6,499|
|6.||Nikon D500||147 mm||115 mm||81 mm||860 g||1240||Y||Jan 2016||1,999|
|7.||Nikon D3400||124 mm||98 mm||76 mm||445 g||1200||n||Aug 2016||499|
|8.||Nikon D7200||136 mm||107 mm||76 mm||765 g||1110||Y||Mar 2015||1,199|
|9.||Nikon D7100||136 mm||107 mm||76 mm||765 g||950||Y||Feb 2013||1,199|
|10.||Nikon D610||141 mm||113 mm||82 mm||850 g||900||Y||Oct 2013||1,999|
|11.||Nikon D7000||132 mm||105 mm||77 mm||780 g||1050||Y||Sep 2010||1,499|
|12.||Nikon D90||132 mm||103 mm||77 mm||703 g||850||n||Aug 2008||1,299|
|13.||Olympus E-600||130 mm||94 mm||60 mm||535 g||500||n||Aug 2009||449|
|14.||Olympus E-420||130 mm||91 mm||53 mm||440 g||500||n||Mar 2008||599|
|15.||Olympus E-520||136 mm||92 mm||68 mm||535 g||750||n||May 2008||699|
|16.||Olympus E-410||130 mm||91 mm||53 mm||435 g||500||n||Mar 2007||699|
|17.||Olympus E-510||136 mm||92 mm||68 mm||538 g||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.|
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-620 was launched at a markedly lower price (by 46 percent) than the D7500, which puts it into a different 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 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 D7500 features an APS-C sensor and the Olympus E-620 a Four Thirds sensor. The sensor area in the E-620 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-620 offers a 4:3 aspect.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
With 20.7MP, the D7500 offers a higher resolution than the E-620 (12.2MP), but the D7500 has marginally smaller individual pixels (pixel pitch of 4.22μm versus 4.29μm for the E-620). However, the D7500 is a much more recent model (by 8 years and 1 month) than the E-620, 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-620 are 20.2 x 15.1 inches or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inches or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inches or 34.1 x 25.6 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-620 are ISO 100 to ISO 3200 (no boost).
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 review, the D7500 provides substantially higher image quality than the E-620, with an overall score that is 31 points higher. This advantage is based on 3 bits higher color depth, 3.7 EV in additional dynamic range, and 1.5 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.
| DXO |
|2.||Olympus E-620||Four Thirds||12.2||4032||3024||none||21.3||10.3||536||55|
|5.||Nikon D5||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|10.||Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|13.||Olympus E-600||Four Thirds||12.2||4032||3024||none||21.5||10.3||541||55|
|14.||Olympus E-420||Four Thirds||10.0||3648||2736||none||21.5||10.4||527||56|
|15.||Olympus E-520||Four Thirds||10.0||3648||2736||none||21.4||10.4||548||55|
|16.||Olympus E-410||Four Thirds||10.0||3648||2736||none||21.1||10.0||494||51|
|17.||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-620 does not. The highest resolution format that the D7500 can use is 4K/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The D7500 and the E-620 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-620 (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 0.48x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Nikon D7500 and Olympus E-620 in connection with corresponding information for a sample of similar cameras.
One feature that is present on the D7500, but is missing on the E-620 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 E-620 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the D7500 does not have a selfie-screen.
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-620 uses Compact Flash or xD Picture cards. The E-620 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-620 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
It is notable that the D7500 offers wifi support, while the E-620 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-620 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the E-620 was succeeded by the Olympus E-600. 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? Which of the two cameras – the Nikon D7500 or the Olympus E-620 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Nikon D7500:
- More detail: Offers more megapixels (20.7 vs 12.2MP) with a 33% 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 (3 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (3.7 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (1.5 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 0.48x).
- 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 230k dots).
- 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 4 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 500) 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 1 month of technical progress since the E-620 launch.
Reasons to prefer the Olympus E-620:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- More compact: Is smaller (130x94mm vs 136x104mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 199g or 28 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 February 2009).
If the count of individual advantages (bullet points above) is taken as a guide, the D7500 is the clear winner of the match-up (21 : 9 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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-620 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the D7500 or the E-620. 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 why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], 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 D7500||4.5/5||+ +||86/100||5/5||4.5/5||Apr 2017||1,299|
|2.||Olympus E-620||3/5||88/100||72/100||4.5/5||5/5||Feb 2009||699|
|3.||Canon 80D||4/5||+ +||84/100||4.5/5||4.5/5||Feb 2016||1,199|
|4.||Nikon D5600||4/5||..||79/100||4.5/5||4/5||Nov 2016||699|
|5.||Nikon D5||..||..||89/100||4.5/5||5/5||Jan 2016||6,499|
|6.||Nikon D500||5/5||+ +||91/100||4.5/5||5/5||Jan 2016||1,999|
|7.||Nikon D3400||4/5||+||76/100||4/5||4.5/5||Aug 2016||499|
|8.||Nikon D7200||4/5||+ +||84/100||4.5/5||4.5/5||Mar 2015||1,199|
|9.||Nikon D7100||5/5||+ +||85/100||4.5/5||4.5/5||Feb 2013||1,199|
|10.||Nikon D610||4/5||+ +||87/100||4.5/5||4.5/5||Oct 2013||1,999|
|11.||Nikon D7000||4/5||..||80/100||4.5/5||4.5/5||Sep 2010||1,499|
|12.||Nikon D90||..||+ +||+ +||4/5||4.5/5||Aug 2008||1,299|
|13.||Olympus E-600||..||..||..||..||4.5/5||Aug 2009||449|
|14.||Olympus E-420||..||85/100||+ +||4/5||4.5/5||Mar 2008||599|
|15.||Olympus E-520||..||87/100||+ +||4.5/5||4.5/5||May 2008||699|
|16.||Olympus E-410||..||86/100||+ +||4/5||4.5/5||Mar 2007||699|
|17.||Olympus E-510||..||89/100||+ +||3.5/5||4.5/5||Mar 2007||799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. 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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
Specifications: Nikon D7500 vs Olympus E-620
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-620|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Four Thirds lenses|
|Launch Date||April 2017||February 2009|
|Launch Price||USD 1,299||USD 699|
|Sensor Specs||Nikon D7500||Olympus E-620|
|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||12.2 Megapixels|
|Image Resolution||5568 x 3712 pixels||4032 x 3024 pixels|
|Pixel Pitch||4.22 μm||4.29 μm|
|Pixel Density||5.60 MP/cm2||5.42 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||no Video|
|ISO Setting||100 - 51,200 ISO||100 - 3,200 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||21.3|
|DXO Dynamic Range (EV)||14.0||10.3|
|DXO Low Light (ISO)||1483||536|
|Screen Specs||Nikon D7500||Olympus E-620|
|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||230k dots|
|LCD Attachment||Tilting screen||Swivel screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Nikon D7500||Olympus E-620|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||8 shutter flaps/s||4 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-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-620|
|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-620|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||950 shots per charge||500 shots per charge|
136 x 104 x 73 mm
(5.4 x 4.1 x 2.9 in)
130 x 94 x 60 mm
(5.1 x 3.7 x 2.4 in)
|Camera Weight||720 g (25.4 oz)||521 g (18.4 oz)|
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