Nikon Camera Coolpix L840 Reference Manual

							Technical Notes
141
Images appear 
smeared.The lens is dirty. Clean the lens. 134
Colors are 
unnatural. White balance or hue is not adjusted properly. 25, 79
Randomly spaced 
bright pixels 
(“noise”) appear in 
image. The subject is dark and the shutter speed is too 
slow, or ISO sensitivity is too high. Noise can be 
reduced by:
•
Using the flash
• Specifying a lower ISO sensitivity setting 43
83
Images are too 
dark 
(underexposed). •
The flash is lowered or a shooting mode that 
restricts the flash is selected.
• The flash window is blocked.
• The subject is beyond the range of the flash.
• Adjust exposure compensation.
• Increase ISO sensitivity.
• The subject is backlit. Select  Backlighting scene 
mode or raise the flash and set the flash mode 
setting to  X (fill flash). 11, 43, 
48
12
147
47
83
26, 43
Images are too 
bright 
(overexposed). Adjust exposure compensation.
47
Unexpected results 
when flash set to 
V (auto with 
red-eye reduction).
Use any scene mode other than  Night portrait, 
and change the flash mode  to any setting other 
than  V (auto with red-eye reduction) and try 
taking the picture again. 43, 48
Skin tones are not 
softened. •
In some shooting conditions, facial skin tones 
may not be softened.
• For images containing four or more faces, try using 
the  Skin softening  effect in Glamour retouch  in 
the playback menu. 51
65
Saving images 
takes time. It may take more time to save images in the 
following situations:
•
When the noise reduction function is in operation, 
such as when shooting in a dark environment
• When the flash mode is set to  V (auto with 
red-eye reduction)
• When shooting in  Night portrait, Night 
landscape , or Backlighting  (when HDR is set 
to  o ) scene mode
• When the skin softening function is applied while 
shooting
• When using contin uous shooting mode –
44
24, 25, 
26
34, 51
81
ProblemCause/SolutionA 
						

							Technical Notes
142Playback Issues
ProblemCause/SolutionA
File cannot be 
played back. •
This camera may not be able to play back images 
saved with another make or model of digital 
camera.
• This camera cannot play  back movies recorded 
with another make or mo del of digital camera.
• This camera may not be able to play back data 
edited on a computer. –
Cannot zoom in 
on image. •
Playback zoom cannot  be used with movies.
• When viewing small images, the playback zoom 
ratio that is displayed may not match the actual 
image zoom ratio.
• This camera may not be able to zoom in on 
images captured with an other make or model of 
digital camera. –
Cannot edit 
images. •
Some images cannot be edited. Images that have 
already been edited may not be edited again.
• There is not enough free space on the memory 
card or in the internal memory.
• This camera is unable to edit images captured 
with other cameras.
• Editing functions used for images are not 
available for movies. 31, 62
–
–
–
Cannot rotate 
image. This camera cannot rotate images captured with 
another make or model of digital camera.
–
Images are not 
displayed on TV. •
A computer or printer is connected to the 
camera.
• The memory card contains no images.
• Remove the memory card to play back images in 
the internal memory. –
–
8
Nikon Transfer 2 
does not start 
when the camera 
is connected to a 
computer. •
The camera is off.
• The batteries are exhausted.
• The USB cable is not correctly connected.
• The camera is not recognized by the computer.
• The computer is not set to start Nikon Transfer 2 
automatically. For more information about Nikon 
Transfer 2, refer to help information contained in 
ViewNX 2. –
120
120, 
128
–
– 
						

							Technical Notes
143
Images to be 
printed are not 
displayed.•
The memory card contains no images.
• Remove the memory card to print images in the 
internal memory. –
8
Cannot select 
paper size with 
the camera. The camera cannot be used 
to select the paper size 
in the following situations, even when printing from 
a PictBridge-compatible printer. Use the printer to 
select the paper size.
• The printer does not support the paper sizes 
specified by the camera.
• The printer automatically selects the paper size. –
ProblemCause/SolutionA 
						

							Technical Notes
144
Images or movies are assigned file names as follows.
File name: DSCN
 0001 .JPG(1) (2) (3)
File Names
(1) IdentifierNot shown on the scre
en of the camera.
• DSCN: Original still images, movies, still images created by 
editing movies
• SSCN: Small picture copies
• RSCN: Cropped copies
• FSCN: Images created by an image editing function other 
than crop and small picture, movies created by the movie 
editing function
(2) File number Assigned in ascending order, st
arting with “0001” and ending 
with “9999.”
(3) Extension Indicates file format.
•
.JPG: Still images
• .MOV: Movies 
						

							Technical Notes
145
* When using EN-MH2 rechargeable Ni-MH batteries with the camera, charge the 
batteries four at a time using Battery Charger MH-73. Also, do not charge batteries 
at the same time if they have different amounts of charge remaining ( A132). EN-
MH1 rechargeable Ni-MH ba tteries cannot be used.
Availability may vary with country or region.
See our website or brochures for the latest information.
Optional Accessories
Battery charger, 
rechargeable batteries*•
Battery Charger MH-73  (includes four EN-MH2 
rechargeable Ni-MH batteries)
• Replacement rechargeable  batteries: Rechargeable 
Ni-MH batteries EN-MH2-B4 (set of four EN-MH2 
batteries)
AC adapter AC Adapter EH-67
Audio/video cableAudio Video Cable EG-CP16
Hand strapHand Strap AH-CP1 
						

							Technical Notes
146
Nikon COOLPIX L840 Digital Camera
Specifications
TypeCompact digital camera
Number of effective pixels16.0 million (Image processing may reduce the 
number of effective pixels.)
Image sensor1/2.3-in. type CMOS; approx. 16.76 million total pixels
Lens
NIKKOR lens with 38× optical zoom
Focal length 4.0–152 mm (angle of view equivalent to that of 
22.5–855 mm lens in 35mm [135] format)
f/-number
f/3–6.5
Construction12 elements in 9 groups (3 ED lens elements)
Digital zoom magnification Up to 4× (angle of view equivalent to that of 
approx. 3420 mm lens in 35mm [135] format)
Vibration reductionLens shift (still images)
Lens shift and electronic VR (movies)
Autofocus (AF)
Contrast-detect AF
Focus range•
[W]: Approx. 30 cm (1 ft)–∞ , 
[T]: Approx. 3.5 m (11 ft)– ∞
• Macro mode: Approx. 1 cm (0.4 in.)– ∞ (wide-
angle position)
(All distances measured from  center of front surface 
of lens)
Focus-area selection Face priority, manual with 99 focus areas, center, 
subject tracking, target finding AF
Monitor 7.5 cm (3-in.), approx. 921k-dot, wide viewing angle 
TFT LCD with anti-reflection coating and 5-level 
brightness adjustment, tiltable approx. 85° 
downward, approx. 90° upward
Frame coverage 
(shooting mode)
Approx. 99% horizontal an
d vertical (compared to 
actual picture)
Frame coverage 
(playback mode) Approx. 99% horizontal an
d vertical (compared to 
actual picture)
Storage
Media Internal memory (approx. 20 MB), SD/SDHC/SDXC 
memory card
File system
DCF and Exif 2.3 compliant
File formatsStill images: JPEG
Movies: MOV (Video: H.264/MPEG-4 AVC, Audio: 
LPCM stereo) 
						

							Technical Notes
147
Image size
(pixels)•
16M (High) [4608 × 3456 P]
• 16M [4608 × 3456]
• 8M [3264 × 2448]
• 4M [2272 × 1704]
• 2M [1600 × 1200]
• VGA [640 × 480]
• 16:9 [4608 × 2592]
• 1:1 [3456 × 3456]
ISO sensitivity 
(Standard output 
sensitivity) •
ISO 125–1600
• ISO 3200, 6400 (available when using Auto 
mode)
Exposure
Metering mode Matrix, center-weighted (digit
al zoom less than 2×), 
spot (digital zoom 2× or more)
Exposure control Programmed auto exposure and exposure 
compensation 
(–2.0 – +2.0 EV in steps of 1/3 EV)
Shutter
Mechanical and CMOS electronic shutter
Speed •
1/1500–1 s
•1/4000 s (maximum speed during high-speed 
continuous shooting)
• 4 s ( Fireworks show  scene mode)
Aperture
Electronically-controlled ND filter (–2 AV) selection
Range2 steps (f/3 and f/6 [W])
Self-timer Can be selected from 10 s and 2 s
Flash
Range (approx.)
(ISO sensitivity: Auto)[W]: 0.5–6.9 m (1 ft 8 in.–22 ft)
[T]: 3.5 m (11 ft)
Flash control
TTL auto flash with monitor preflashes
Interface
USB connectorHi-Speed USB
•
Supports Direct Print (PictBridge)
• Audio/video output connector (NTSC or PAL can 
be selected)
HDMI output connector HDMI micro connector (Type D)
DC input connectorFor AC Adapter EH-67 (available separately) 
						

							Technical Notes
148
Wi-Fi (Wireless LAN)
StandardsIEEE 802.11b/g/n (standard wireless LAN protocol)
Range (line of sight)Approx. 10 m (10 yd)
Operating frequency2412–2462 MHz (1-11 channels)
Data rates (actual 
measured values)IEEE 802.11b: 5 Mbps
IEEE 802.11g: 20 Mbps
IEEE 802.11n: 20 Mbps
Security
OPEN/WPA2
Access protocolsInfrastructure
Supported languages Arabic, Bengali, Bulgarian, Chinese (Simplified and 
Traditional), Czech, Danish, Dutch, English, Finnish, 
French, German, Greek, Hindi, Hungarian, 
Indonesian, Italian, Japanese, Korean, Marathi, 
Norwegian, Persian, Polish, Portuguese (European 
and Brazilian), Romanian, Russian, Serbian, Spanish, 
Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, 
Vietnamese
Power sources
•
Four LR6/L40 (AA-size) alkaline batteries
• Four FR6/L91 (AA-size) lithium batteries
• Four EN-MH2 rechargeable Ni-MH batteries 
(available separately)
• AC Adapter EH-67 (available separately)
Battery life1
Still images •
Approx. 590 shots when using alkaline batteries
• Approx. 1240 shots when using lithium batteries
• Approx. 740 shots when using EN-MH2 batteries
Movies (actual battery 
life for recording)2•Approx. 1 h 35 min when using alkaline batteries
• Approx. 4 h 30 min when using lithium batteries
• Approx. 2 h 30 min when using EN-MH2 batteries
Tripod socket
1/4 (ISO 1222)
Dimensions (W × H × D)Approx. 113.5 × 78.3 × 96.0 mm
 (4.5 × 3.1 × 3.8 in.) 
(excluding projections)
Weight Approx. 538 g (1 lb 3.0 oz) (including batteries and 
memory card) 
						

							Technical Notes
149
•Unless otherwise st ated, all figures assume fresh LR6/L40 (AA-size) alkaline 
batteries and an ambient temperature of  23 ±3°C (73.4 ±5.4°F) as specified 
by the Camera and Imaging Pr oducts Association (CIPA).
1Battery life may vary depending on conditio ns of use, such as the interval between 
shots or the length of time that menus and images are displayed. The included 
batteries are for trial use only. Figures li sted for lithium batteries are measured 
using commercially available FR6/L91 (AA-size) Energizer(R) Ultimate Lithium 
batteries.
2Individual movie files cannot exceed 4 GB in size or 29 minutes in length. 
Recording may end before this limit is reached if camera temperature becomes 
elevated.
• Nikon will not be held liable for an y errors this manual may contain.
• The appearance of this product and its  specifications are subject to change 
without notice.
Operating environment
Temperature 0°C–40°C (32°F–104°F)
Humidity85% or less (no condensation) 
						

							Technical Notes
150
Approved Memory Cards
The following Secure Digital (SD) memory cards have been tested and 
approved for use in this camera.
• Memory cards with an SD Speed Class rating of 6 or faster are 
recommended for recording movies. When using a memory card with a 
lower Speed Class rating, movie  recording may stop unexpectedly.
•Contact the manufacturer for details on  the above cards. We cannot guarantee 
camera performance when using memory cards made by other manufacturers.
• If you use a card reader, make sure that  it is compatible with your memory card.
Trademark Information
•Windows is either a registered trademark or trademark of Microsoft 
Corporation in the United St ates and/or other countries.
• Adobe, the Adobe logo, and Reader are either trademarks or registered 
trademarks of Adobe Systems Incorporated in the United States and/or 
other countries.
• SDXC, SDHC, and SD Logos are trademarks of SD-3C, LLC.
• PictBridge is a trademark.
• HDMI, HDMI logo and High-Definition Mu ltimedia Interface are trademarks 
or registered trademarks  of HDMI Licensing LLC.
• Wi-Fi and the Wi-Fi logo are trademarks or registered trademarks of the Wi-Fi 
Alliance.
• Android and Google Play are trademarks  or registered trademarks of Google, 
Inc.
• The N-Mark is a trademark or registered trademark of NFC Forum, Inc. in the 
United States and in other countries.
• All other trade names  mentioned in this manual or the other 
documentation provided with your Ni kon product are the trademarks or 
registered trademarks of their respective holders.
SD memory cardSDHC memory cardSDXC memory 
card
SanDisk – 4 GB, 8 GB, 16 GB, 32 GB 64 GB, 128 GB
TOSHIBA – 4 GB, 8 GB, 16 GB, 32 GB 64 GB
Panasonic 2 GB 4 GB, 8 GB, 16 GB, 32 GB 64 GB
Lexar – 8 GB, 16 GB, 32 GB 64 GB, 128 GB