In built Flash

p500 got a built in flash.......just press the switch nearby the flash...or select auto mode.........

Try resetting your custom menus...

Please, which camera model? Are we talking about the external flash or one built in? If it is built in the camera may think there is not enough light thus setting the flash to fire. That is what auto does, it takes all the decisions away from the camera operator.

This is an internal problem with the unit that opens the flash assembly and will require service.

The Nikon Coolpix is a compact digital camera that is well-suited for amateur to semi-professional photographers. Occasionally, some issues with the built-in flash can occur. If the hardware is damaged, the camera must be taken in for repairs. More often, problems occur because of obstructions or issues with the camera's settings and are easily repairable. Follow the troubleshooting guide to fix the built-in flash.

Instructions:
1.Ensure the Nikon Coolpix digital camera battery is fully charged.
2.Wait several seconds before pressing the shutter-release button if the "Flash Ready" indicator light is flashing red. Press the "Flash Mode" button once or twice to change the flash settings from "Off" to "On" or "Auto" if the "Flash Ready" indicator light is off.
3.Ensure there are no obstructions, like your finger or the camera strap, that are preventing the flash from firing if an error message appears on the display screen and the flash is not firing when the flash mode is set to automatic.
4.Press the flash back into the camera after every photo to ensure the flash always fires in "Auto" mode instead of just in low illumination settings. Press the flash back into the camera to turn off the flash in "Manual" mode; otherwise the flash will continually fire.
5.Change the auto focus setting from "Infinity" to "Auto," "Macro Closeup" or "Self-Timer" by pressing the "Focus Mode" button once, twice or three times to automatically turn the flash back on.
6.Use only Nikon external flash accessories to avoid damage to the built-in flash and camera circuits.

I hope you find it very helpful. Thanks.

Digital Camera Fully Compatible, Newly Developed S-TTL System "S-TTL" enables TTL auto shooting by an external strobe for a digital SLR camera as well as for a point & shoot digital camera.
INON S-TTL auto strobe supports any manufactures' model providing highly accurate exposure control.
Film camera era without strobe selection problem TTL stands for "Through The Lens" and TTL auto strobe system controls flash amount to provide correct exposure based on calculation by camera's internal sensor metering reflecting strobe light from a subject through the lens. This TTL system meters actual light amount reflecting from a subject providing accurate exposure.
When we start with the history of underwater TTL auto strobe, underwater camera?"NIKONOS V" released in 1984 was the first to provide automatic TTL flash control for underwater strobe SB-102, SB-103 succeeded by NIKONOS V compatible underwater strobes form other manufactures. The 5 pin electrical sync connector for NIKONOS V is most popular and widely adopted to connect an underwater strobe and underwater film camera (underwater camera/housing).
A film SLR camera has flexibility to select an underwater strobe. As far as housing has NIKONOS type electrical sync connector and properly wired, automatic TTL flash control is usable with any TTL auto strobe like Nikon SB-105, INON Z-220, Z-22 connected via electrical sync cable.
NIKONOS type 5 pin electrical sync connector and NIKONOS V with INON Z-22 strobe

Film camera compatible strobe is not usable for a digital camera!? Underwater TTL strobe circumstances have been drastically altered with the spread of digital camera among divers. Some underwater housing for digital SLR camera has NIKONOS type electrical 5 pin sync connector as same as film camera housing. Since the housing has same NIKONOS type sync connector, existing film camera compatible underwater strobe has been considered compatible with a digital SLR camera via 5 pin sync cable but happened to experience error message on the digital camera or blackout on an image even the strobe worked. Why this happened?
This is because automatic TTL strobe system difference between a film camera and a digital camera.

The film TTL auto system makes single flash while digital TTL auto system employs pre-flash type making two to three flashes. Film TTL auto strobe system starts firing at the same time the shutter opens and reflecting strobe light from a subject is recived at a film. The reflecting light on the film is metered by the sensor to determine when to cease firing for correct exposure. This process takes only about 1/1000 second.
In contrast, digital TTL auto strobe system can not calculate adequate exposure based on reflecting light from a subject since image sensor (CCD/CMOS) reflectivity is comparably low comparing to a film. So digital TTL strobe system gives preliminary flash for very short period of time (pre-flash) just before the shutter opens metering reflecting light from a subject by the sensor to calculate necessary amount of light for correct exposure and starts emitting main flash at the same time the shutter opens. Canon E-TTL and Nikon i-TTL employs this system.

When we connect conventional film camera compatible TTL strobe to pre-flash type digital SLR via sync cable, the strobe makes full dump by pre-flash signal then the shutter opens before the strobe has been fully charged resulting in quite under exposed image only with ambient light. Even two time flash compatible strobe like INON Z-220 strobe, does not fully support a digital TTL and force to use Manual flash mode.





Film SLR:
A strobe starts firing at the same time the shutter opens and quenches firing when correct exposure has been obtained.
A film compatible TTL strobe connected to a pre-flash type digital SLR via electrical cable flashes does not support TTL auto exposure resulting in synchronization only with first pre-flash or totally uncontrollable.

The birth of digital fully compatible S-TTL S-TTL auto compatible INON D-2000 strobe and Z-240 strobe works in TTL auto mode by simply setting their main dial to S-TTL position. A film camera seems to depend more on photographer's skill, experience and feel since the camera does not allow checking images on site. A digital camera allows us to check images right after shooting and enable to try to shoot again as much as we like. And high capacity memory card further allows to shoot hundreds of images. The digital camera makes entry level of underwater photography getting down and nowadays more people buy a digital SLR camera and underwater housing even they have just started underwater photography. However underwater photography gets more difficult because underwater strobe does not work in TTL auto.
INON is among the first to support digital TTL auto system with "S-TTL" auto mode equipped D-2000 strobe and Z-240 strobe.
The proper name of S-TTL is "Optical Synch TTL". S-TTL enables to perform in TTL auto exposure as same as genuine TTL strobe from camera manufacture, based on camera's built-in flash light to use as a signal to be transmitted to a strobe. S-TTL uses digital camera's built-in flash light not as a light source but as like a controller to trigger S-TTL strobe.
The built-in flash of a digital camera makes weak flash (pre-flash) before main-flash to calculate exposure. This pre-flash is transmitted to S-TTL strobe to control the strobe to make pre-flash to a subject. The reflecting light from the subject goes through the camera's master lens to an image sensor then a processor calculates main flash light amount for correct exposure.?Finally the built-in flash makes main-flash which is transmitted to the S-TTL strobe to cause main-flash of the S-TTL strobe.


Digital camera's built-in flash lights are transmitted via an optical fiber to the
S-TTL strobe to make pre-flash and main-flash instead of the built-in flash.

Hi The product you have given has Built-in flash with Auto, Forced on, Red-eye on, and forced off (Red-eye reduction On or Off).
There is a 1 1/8" diameter lens with a built-in lens cover that automatically opens and closes when the on/off button is pressed. Above the lens is the viewfinder window, flash and tiny (almost unnoticeable) microphone. There is also a small circle that has three functions: the autofocus assist beam, red-eye reduction lamp, self-timer lamp. A wrist strap comes with the camera and attaches through a slot on the front of the camera near the side.
To the right of those buttons is the four-way controller, used for menu navigation as well as:

• Up - Metering (Evaluative, center-weighted, spot)
• Down - Drive (Single-shot, continuous, self-timer)
• Left - Focus (Auto, macro, infinity)
• Right - Flash (Auto w/redeye reduction, auto, flash on w/redeye reduction, flash on, flash off)

Set camera body for Internal Flash for Pop-Up Flash.

Set camera body for External Flash for parked flash on Hot Shoe.

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There are 5 flash modes: Auto-flash, Manual fill-flash, Auto-flash with red-eye reduction, Manual fill-flash with re-eye reduction, and Flash cancel. In Macro mode, the built-in flash is automatically disabled.

Yes, please see the following table: Optional Flash Flash Control Mode Capacity FL-50 TTL Auto (Super FP flash)/ TTL Auto/ Auto/ Manual/ Manual (Super FP flash) The FL-50 flash can be connected with the E-300 camera through flash power grip: FP-1 and flash cable: FL-CB05. FL-40 Auto/ Manual The external flash cannot be used with the built-in flash. * Only Auto and Manual mode can be set in the concurrent use of FL-40 and the built-in flash. (For their specification design, E-300 and FL-40 can not communicate in TTL Auto and R-TTL Auto modes.) FL-36 TTL Auto (Super FP flash)/ TTL Auto/ Auto/ Manual/ Manual (Super FP flash) The external flash can be used with the built-in flash.