Nikon D7500 Review
Short evaluation
Pros
- Robust (with splash water and dust protection), well manufactured and ergonomic housing
- Fast and persistent continuous shooting function
- Extensive equipment
- Very good image quality (up to ISO 3,200)
Cons
- No optional multifunction handle available
- Unfavorably placed Fn1 key
- Viewfinder view less suitable for spectacle wearers
- Highest ISO sensitivities are practically useless.
With the D7500, Nikon presents the successor of the mid-range DSLR D7200. As is customary with further development, technology from the top model flows into the classes below. In this case, the D7500 misses the 20-megapixel APS-C sensor with up to ISO 1.6 million, the Expeed 5 image processor, the 180,000-pixel light meter, the light-accentuated exposure meter and the D500’s 4K video function. In one respect, the D7500 is even slightly ahead of the D500.
The Nikon D7500 has a rugged, monocoque plastic housing that is sealed against dust and splash water.
The APS-C sensor, inherited from the D500 with a resolution of 20 megapixels, together with the powerful Expeed 5 processor, enables even higher performance; the image quality of the D7500 is said to correspond to that of the D500. The ISO sensitivity can now be adjusted regularly between ISO 100 and 51,200, the extension ranging from Lo1 (ISO 50) to Hi5 (ISO 1,640,000). The continuous shooting speed increases from six (D7200) to more than eight frames per second (the D500 can take ten). Above all, however, the photographer benefits from the enlarged buffer memory. Instead of after 18 raw images with 14 bits, only after 50 images in a row is the end of the high speed. In JPEG, the maximum number of continuous shots is still 100. Although the autofocus module of the D7500 is still the 51 field module Multi-CAM 3500 II known from the D7200, it now offers group field control for the first time in the D7000 series.
In addition, the new 180,000 pixel RGB metering sensor makes an important contribution to scene recognition and tracking. Even faces are recognized by the exposure sensor known from the D500. The sensor of the D7200 still resolves about half of the resolution. Another very interesting function inherited from the D500 is the light-accentuated exposure metering. It ensures that the highlights in the image do not erode, but works differently than a spot measurement, with which one could achieve the same thing with a measurement on the brightest subject detail, automatically on the entire image field. This is helpful in theatre photography, for example, when one person is illuminated by the spotlight while the rest of the stage sinks into darkness. Or in similar motif situations. Also of interest is the new “Auto” position for the Picture Control system, which adapts the image processing to the motif. The individual parameters (such as sharpening, saturation or microcontrast) can still be adjusted even in the auto position.
The video function now records a maximum of 4K resolution (3,840 x 2,160 pixels) at up to 30 frames per second. Only in Full HD, where up to 60 frames per second are possible, is an additional electronic image stabilizer available, and the sensor surface is also better utilized only in Full HD. Another new feature is the option of saving the videos as MP4 as an alternative to the MOV format – this is important for compatibility with mobile devices and televisions. In both cases, compression is performed using the H.264 codec. The sound can be recorded either via the integrated stereo microphone or via an externally connected (3.5 mm jack) jack.
In addition to the sealed housing, the D7500’s professional ambitions are underlined by the mechanical shutter designed for 150,000 releases. An electronic first shutter curtain can also be activated to reduce a possible shutter shock effect (minimal blurring due to shutter vibrations). The fastest mechanical shutter speed is 1/8,000 second, the flash sync speed is 1/250 second. The D7500 also masters the practical AF fine-tuning (see camera tip in the links) of the D5 and D500.
The integrated raw converter, which now even has a practical batch function, seems almost obligatory. A movie edit function is also on board. The viewfinder is equipped with a glass pentaprism, shows a 100-percent image field and magnifies 0.94x, which corresponds to 0.63x magnification equivalent to a 35mm image. The D7500 also has a two-axis electronic spirit level and an orientation sensor. Also built into the case is the small pop-up flash, which the D7500 has ahead of the D500. The D7500 is also the first camera after the D5 and D500 to support Nikon’s new wireless flash system. However, the WR-R10 is required as a control unit on the flash shoe of the D7500.
However, compared to the D7200, there is also a step backwards to report: So the D7500 has only one card slot and no double SD card slot anymore. The remaining slot is still compatible with SDHC and SDXC as well as UHS I, but does not support the significantly higher UHS II speed. The integrated Snapbridge with energy-saving Bluetooth for permanent smartphone connection and switchable WLAN is almost obligatory. You can use a smartphone equipped with the free Snapbridge app with Android or iOS. The permanent connection not only transmits two-megapixel versions of the images in the background to the smartphone, but also the geocoordinates determined by the smartphone to the camera to immortalize them in the EXIF data. WLAN automatically activates the app when required, for example for transmitting high-resolution images or for remote camera control including live image transmission.
Ergonomics and workmanship
The housing of the Nikon D7500 is made of high-quality plastic. Thanks to its monocoque construction, it is extremely stable and offers a deeper indentation between the grip bead and the bayonet, so the D7500 fits better in the hand than its predecessors. However, the clearly protruding Fn1 button, which sits under the middle finger and is operated only too easily inadvertently, disturbs. In the editorial department, we had quite different opinions, ranging from “easily accessible” to “clearly annoying”. It probably also depends on the length of the fingers. However, the handle is generously covered with a grained, non-slip rubber. Thanks to the deep bulge, the camera can also be “hung” wonderfully loosely at the fingertips without slipping out of your hand. Even the little finger finds enough space; at least if you don’t have “shovel excavator paws”.
22 keys, four rotary switches and four rotary knobs ensure very direct operation. Virtually all important recording settings can be made using the buttons and knobs without having to call up the menu. However, the upper info display is a bit leaner than the higher priced Nikon models, so only parts of the white balance settings can be seen here, while for others the view to the back screen is necessary as an additional info display. The behavior of some control elements can be adapted to your own needs. Nikon relies on a two-handed operating concept, as seven keys alone are located side/above the left side of the display, three more are located near the lens on the left side of the bayonet.
The SD card slot is located on the handle side, which in contrast to the predecessor model D7200 offers only one slot. It supports SDHC and SDXC cards as well as the UHS-I standard. With 80 MByte per second write speed, the theoretically possible 104 MByte per second are used quite well, more about this in the Equipment section. The tripod thread on the underside of the camera sits perfectly in the optical axis and far enough away from the battery compartment so that it remains accessible even when a tripod exchange plate is used. The EN-EL15a lithium-ion battery is the same as its predecessor and is sufficient for a generous 950 CIPA-standard shots, which can also be easily achieved in practice. Nevertheless, the endurance has also decreased compared to the predecessor model, which is certainly due to the higher performance of the camera. Instead of the battery, an optionally available plug-in unit with power supply connection can be used. The red pencil, on the other hand, has sacrificed the optional portrait format battery grip, which would have been very desirable in this camera class.
On the interface side there are two hinged rubber flaps. The mini HDMI jack, the micro USB connector, which is not suitable for recharging the battery, and the 3.5 mm stereo jack microphone connector are hidden behind the upper one. Behind the lower flap is a 3.5 mm headphone socket and a multifunction interface, which can be used, among other things, to connect a cable remote trigger. The D7500 even offers an infrared receiver for a corresponding remote control for remote triggering, which is rare in the meantime, but it only sits on the front of the camera. By the way, all interfaces and their covers, like the entire D7500, are equipped with seals to prevent the ingress of dust and splash water.
The Nikon D7500’s eight-centimeter screen at the back is a touchscreen that folds up and down
On the upper side, a small, illuminated LC display shows important recording information.
An eight-centimetre screen is emblazoned on the back, but it only has a resolution of 922,000 pixels. That’s just enough with this size, but visibly coarser than with the Nikon D500, for example. The display offers a maximum luminosity of over 640 cd/m², which is bright enough even in sunshine. Thanks to the folding mechanism, the screen can be tilted about 40 degrees downwards and 110 degrees upwards, which makes it easier to take pictures from ground level and overhead perspectives when using the live image. Practically speaking, it is also a touch screen that can be used not only to focus on a detail of the subject, but also to trigger and operate the menus if desired. However, the touchscreen is only an additional alternative, and the D7500 can also be operated entirely via keys. The touch operation leaves surprisingly few fingerprints, which means that the display is coated accordingly and is therefore easier to clean. In contrast to the D5600, the touchscreen can’t be used as an AF touchpad or other function key when using the viewfinder, which would only make sense with a laterally swivelling display anyway – but the D7500 offers keys on the side of the display.
Although the D7500 has an illuminated info display on the top of the camera, the rear screen also serves as an information centre. In addition, you can quickly call up a quick selection menu here, which offers some additional functions to the many keys, for which you don’t have to bother with the large main menu. The main menu should look familiar to Nikon users. There is a lot to adjust and so you have to search or scroll for one or the other function a bit longer. Some help texts can be displayed to help you understand some of the menu items. Nikon would have liked to have been able to implement this more consistently for more menu items. Menu items that cannot be selected in the current mode are grayed out. Unfortunately, there is no help that explains why a menu item is currently not selectable. Although the explanatory texts can also be displayed for menu items that cannot be selected, they do not provide any corresponding information.
The live image shows an exposure preview if desired, grid lines or a 3D spirit level as well as guide lines can also be displayed. Even the depth of field can be judged because the aperture is closed in real time, which leads to noise in the live image in darker environments with small apertures.
The main feature of a DSLR is of course the name-giving reflex viewfinder. In the case of the D7500, this works with a high-quality glass prism, which results in a large and bright viewfinder image. The magnification factor is 0.94x, which corresponds to 0.63x magnification equivalent to a small image. As a high-quality viewfinder, 100 percent of the image field is covered. The exit pupil of 18.5 millimetres, on the other hand, is likely to be slightly larger, especially for spectacle wearers. Dioptric correction helps some people to put their glasses on their forehead and to have a better view of the viewfinder. Thanks to the proximity sensor above the viewfinder, the rear camera display is immediately switched off. Image control, if enabled, also appears only when the camera is removed from the eye shortly after shooting. Below the viewfinder image are status displays, the autofocus fields are displayed in red and grid lines can also be displayed.
Equipment
As a link between the hobby and professional cameras, the Nikon D7500 is equipped with a program selector wheel that offers an automatic mode, scene programs and effect programs in addition to the classic creative programs P, A, S and M. The Nikon D7500 is also equipped with a program selector wheel that can be used to select the desired program. This is also the way for those who want to benefit from the high speed and robustness of the D7500, but don’t want to deal with the photographic settings. But the photographer can also influence the image parameters up to a monochrome mode according to his own wishes in the creative programs from the program automatic over the semi-automatic up to the manual mode, which offers an ISO automatic including exposure correction. If you want to recall certain settings quickly, you will also find two user memories on the program selector wheel.
In addition to the ISO auto function, which is a bit cumbersome to activate, the D7500 also offers extensive continuous shooting functions with up to nine images and a maximum exposure distance of 3 EV, whereby this maximum is only available for up to five shots. With it you can make very good HDR photos. Who would rather have it automatically in the camera: This is also possible. You can set how strong the effect should be. Individual photos, however, are spiced up with Active-D ligthing, which improves the drawing in the shadows. This effect is not only automatic, but can also be controlled manually. Thanks to the configurable interval function, even longer processes can be captured photographically; if desired, the camera automatically creates a video from them.
Speaking of video: Thanks to the new 20-megapixel sensor, the D7500 records video in 4K resolution with a maximum of 3,840 x 2,160 pixels (4K) at up to 30 frames per second. If the resolution is reduced to Full-HD, up to 60 frames per second are possible for very smooth motion sequences and pans. Compression according to the MPEG-4 standard is carried out with the H.264 codec in two adjustable quality levels; MOV and MP4 are available as file formats. For 4K recording, a fast SDHC or SDXC memory card supporting UHS-I Speed Class 3 is recommended (guaranteed minimum write speed 30 MByte/s). The sound is transmitted to the video’s audio track either via the integrated stereo microphone or, better still, via an external microphone. The level can be adjusted and controlled via the headphone jack. However, you should not use the optical zoom, the zoom rings of the Nikon lenses do not run smoothly enough and the travel is too small. Automatic focusing should also be avoided. Not only does the sound track sometimes make noises (depending on the lens), but the focus is simply too slow and imprecise or pumped. By the way, focus tracking works a little better if you use an AF-P lens with a stepper motor optimized for contrast autofocus instead of an AF-S lens (with ultrasonic drive).
The contrast autofocus is quite slow with an AF-S lens of 0.8-1.3 seconds, and the shutter release delay of 0.11 seconds when Live View is activated is twice as slow as when the SLR viewfinder is used. Here, the trigger delay drops to 0.05 seconds, which is a fast rate for DSLR ratios. The shutter release delay including autofocus is also fast with 0.2 to 0.36 seconds. The autofocus works with 51 sensors, 15 of which are high-quality cross sensors. The middle sensor can even focus with an initial lens speed of F8. Thanks to the field-of-view group control, which is new in the 7000 series, moving subjects can be tracked even better from the autofocus. With its 180,000 pixels, the new light metering sensor makes a good contribution to this, since the sensor can not only detect brightness and colors, but also where the subject is moving. Another new feature is the extremely useful light-accentuated measurement. In images with light areas that are not very bright and that are not in the center of the image, this type of exposure metering prevents the lights from eroding. This is very practical for stage photography, for example.
Nikon D7500 Datasheet
Electronics |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Sensor | CMOS sensor APS-C 23.6 x 15.8 mm (crop factor 1.5 )21.5 megapixels (physical) and 20.1 megapixels (effective) |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Pixel pitch | 4.3 µm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Photo resolution |
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Picture formats | JPG, RAW | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Colour depth | 24 bits (8 bits per color channel), 36 bits (12 bits per color channel), 42 bits (14 bits per color channel) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Metadata | Exif (version 2.31), DCF standard (version 2.0) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Video resolution |
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Maximum recording time | 29 min 59 sec | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Video format |
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Lens |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Lens mount |
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Focusing |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Autofocus mode | Phase comparison autofocus with 51 sensors, 15 cross sensors and 36 line sensors, autofocus working range from -3 EV to 19 EV, contrast autofocus | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Autofocus Functions | Single Auto Focus, Continuous Auto Focus, Tracking Auto Focus, Manual, AFL Function, AF Assist Light (LED), Focus Magnifier | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Focus control | Depth of field control, Live View | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Viewfinder and Monitor |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reflex viewfinder | SLR (prism viewfinder) (100 % image coverage), 19 mm eye relief with 0.94x magnification (0.6x KB equivalent), dioptre compensation (-2.0 to +1.0 dpt), replaceable focusing screens, grating can be faded in | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Monitor | 3.2″ (8.0 cm) TFT LCD monitor with 922,000 pixels, viewing angle 170°, anti-reflective, brightness adjustable, colour adjustable, tiltable 110° up and 42° down, with touch screen | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Info display | additional info display (top) with illumination | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Exposure |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Exposure metering | Centre-weighted integral measurement, matrix/multi-field measurement over 180,000 fields, spot measurement (measurement over 3% of the image field), AF-AE coupling | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Exposure times | 1/8,000 to 30 s (Auto )1/8,000 to 30 s (Manual) Bulb Function |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Exposure control | Fully Automatic, Program Automatic (with Program Shift), Aperture Priority, Aperture Priority, Manual | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Bracketing function | Bracket function with maximum 9 shots, step size from 1/3 to 2 EV, HDR function | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Exposure compensation | -5.0 to +5.0 EV with step size from 1/3 to 1/2 EV | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Sensitivity to light | ISO 100 to ISO 51.200 (automatic )ISO 50 to ISO 1.640.000 (manual) |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Remote access | Remote triggering, cable trigger, infrared trigger, remote control via smartphone/tablet , remote control from computer: certain functions |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Motives | Twilight, Candlelight, Children, Landscape, Food, Macro, Night Scene, Night Portrait, Portrait, Sunset, Sports/Action, Beach/Snow, Animals, 3 more scene modes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Picture effects | High Key, Landscape, Low Key, Miniature Effect, Monochrome, Neutral, Pop Color, Portrait, Selective Color, Toy Camera, Vivid, Color Drawing, High Key, Low Key, Night Vision, Selective Color, Silhouette, 5 more Image Effects | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
White balance | Auto, Cloudy, Sun, White balance bracket, Fine-tune, Shadow, Flash, Fluorescent lamp with 7 presets, Incandescent light, from 2,500 to 10,000 K, Manual 6 memory locations | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Color space | Adobe RGB, sRGB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Continuous shooting | Continuous shooting function max. 8.0 fps at highest resolution and max. 100 stored photos, max. 100 images in JPEG or 50 images in 14 bit RAW | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Self-timer | Self-timer every 2 s, special features: or 5, 10 or 20 seconds | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Timer | Timer/interval recording with max. 9,999 recordings, start time adjustable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Shooting functions | Mirror lock-up, AEL function, AFL function, live histogram | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Flashgun |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Flash | built-in flash (hinged )flash shoe: Nikon, standard centre contactsupport for radio flash control (WR-R10 required as control unit) |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Flash range | Flash sync time 1/320 s | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Flash number | Guide number 12 (ISO 100) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Flash functions | Auto, Fill-in flash, Flash on, Flash off, High speed sync, Long time sync, Flash on second shutter curtain, Manual flash output (22 levels), Red-eye reduction by lamp, Master function (4 channels and 3 groups), Flash exposure compensation from -3.0 EV to +1.0 EV | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Equipment |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Image stabilizer | electronic image stabilizer and no optical image stabilizer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Memory |
SD (SDHC, SDXC, UHS I)
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GPS function | GPS external (permanent smartphone connection|wired or plug-on receiver) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Microphone | Stereo | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Power supply | Power supply connection | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Power supply | 1 x Nikon EN-EL15a950 images according to CIPA standardNikon EH-5c power supply unit |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Playback Functions | Red eye retouching, video editing, image cropping, image rotation, image protection, highlight / shadow warning, playback histogram, playback magnifier, image index, slide show function, zoom out | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Face recognition | Face recognition | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Picture parameters | Sharpness, Contrast, Saturation, Noise Reduction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Special functions | Electronic spirit level, Grid can be displayed, Orientation sensor, Live View, User profiles with 2 user profiles | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ports | Data interfaces: Bluetooth, USBUSB type :USB 2.0 High SpeedWLAN : available (type: B, G) |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
AV connectors | AV output: HDMI output Mini (Type C )Audio input: yes (3.5 mm jack (stereo with power supply)) Audio output: yes (3.5 mm jack (stereo, 3-pole)) |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Supported direct printing methods | PictBridge | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Tripod socket | 1/4″ in optical axis | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Case | Splash guard | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Features and Miscellaneous | Expeed5 Image ProcessorDust Cleaning Function , Reference Image Function (only in conjunction with Capture NX-D software) “Picture Control” Shooting SettingsDynamic AF Field Control with 9, 21 or 51 Fields of ViewActive D-Lighting (Contrast Adjustment) with Five SettingsSpot White BalanceISO Video100 to 1,640,000 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Size and weight |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dimensions W x H x D | 136 x 104 x 73 mm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Weight | 718 g (ready for operation) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Other |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
included accessories | Nikon BF-1B (Case Cover )Nikon DK-28 (Eyepiece Cover)Nik onDK-5 (Eyepiece Cover ) Nikon EN-EL15a Special BatteryNikon |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
optional accessory | Nikon EH-5c AC AdapterNikon EP-5B Battery Compartment Adapter CableNikon GP-1 (GPS Receiver) Nikon MC-DC2 Cable Remote TriggerNikon WR-1 (Wireless Remote Control) Nikon WR-R10 Wireless Remote Control |
Firmware updates 1.10 for the Nikon D850, D7500 and D5600: Snapbridge now without Bluetooth
Nikon provides a new firmware version 1.10 for each of its three DSLRs D850, D7500 and D5600. In addition to camera-specific troubleshooting, the new firmware ensures that the cameras can also connect directly to smartphones running the Snapbridge app via WLAN. Bluetooth is no longer required.
The D7500 even had two problems, which are fixed thanks to the new firmware: When rotating from P to U1 and back, the ISO sensitivity of U1 was maintained in P mode. Furthermore, the 4K30p video mode is said to have caused unexpected behavior in Live View if the zoom in and zoom out buttons were pressed several times. The firmware updates can be downloaded from the Nikon website and installed by yourself according to the instructions there. If you are not confident enough to do this yourself, you can contact Nikon Support or your specialist dealer.