Question about Nikon Coolpix 5700 Digital Camera

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Studio Strobe not firing with Coolpix

I used the AS-15 Flash Adapter to connect my camera to the studio strobes and checked the camera's settings but the strobes still do not fire. What's wrong?

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The Coolpix line of cameras require a "tip positive" sync connection to an external strobe unit (when using the Nikon AS-15 Flash Sync Adapter). On some external Studio Strobe units the sync polarity is easy to change because of the type of plug: On this type of connector simply turn the plug around and insert it with the male pin connectors in the other holes. Other types of connectors (such as the standard "phono" plug) are not generally changeable by the user. If the Coolpix does not fire an external strobe check with the strobe manufacturer for sync polarity info.

Posted on Aug 29, 2005

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1 Answer

Hotshoe and sync cable will not fire strobs. However, if I connect the sync cord via my SB800 the strobe will fire.... Help :D


What strobe are you using besides the SB800? Probably the best solution is to use a hotshoe extender for the mystery strobe (like an SC-15), and then set the SB800 in SU-4 mode (i.e. fire when any other strobe around it fires).
Sounds like the mystery strobe isn't triggering correctly with the sync signal that the body is giving through your adapter.

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Why does it take more than 20 seconds to change up in order to fire the flash strobe on the vivitar 285hv


My first impression is that you are using the flash at its maximum capacity and completely draining the charge each time. I'd also say that you are only going to get about a dozen flash burst before the batteries are exhausted. I use several Vivitar 283's 285's and a couple 285HV's in a portable studio set up I have and the 285 HV's have got to be tuned down about 1/3 before I can get them to match the other flash outputs. If I need all out brute power then the 285HV's are used on full inside a softbox. I generally work with a 16 batteries between the two 285HV, also they need good fresh batteries off the charger. On a photo shoot I'll get maybe 15 shots before the power is down enough that I change then, I'd say powering back up it'll take about 15 to 20 seconds before they come out.

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I have purchased an Ikelite AF 35 strobe to use with my Sony DSC-TX1 camera and underwater housing. Even with the strobe set to the lowest setting, the photos I take with the camera set to 'housing on' are...


akdenny, have an af35 myself and know from experience the issue is very likely to be the way you have the block out for the cameras flash. if you block it by having the tape inside the housing it confuses the af35 to fire at a higher setting. from what i can gather it senses the strength of the camera flash and adjusts. I get the best results with the blockout on the camera supplied diffuser, stops the flash camera going forward and gives plenty of light to get the af35 to fire right. to blockout i just use some black tape , fabric tape seems to stick well.
you will still need to set the auto level setting.
hope it works out, i find it a great flash. and the guys at ikelite very very helpful.

Dec 28, 2010 | Ikelite 4035 Left Hand AF35 Auto flash kit...

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Pentax K110d flash trigger problem, I have 2 flash trigger strobes set up and a flash on the hot shoe of the camera, but with shutter release the trigger strobe lights fire but do not show in the pic, only...


Your camera uses a PTTL flash system. That means the flash on the camera fires a "pre-flash" to set the exposure and then the main flash. Your flash trigger strobes are reacting to the pre-flash and firing before the shutter activates. This all happens in a millisecond.

Oct 25, 2010 | Pentax K110D Digital Camera

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I purchasing this flash from b & h and want to know if it will sync with my studio lights slave function so both flashes will be fired at the same time? I figure I'll have to use the camera in manual...


Presuming you bought a shoe-mount flash for your Sony A900 and set the camera and flash to manual so there's no pre-flash to prematurely trigger your strobes, and presuming your studio lights have built-in optical slaves, you should be all set.

Henry Posner
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Oct 10, 2010 | Cameras

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Canon 580ex II strobe issue


This depends on the mode you have selected on the flash gun. If you have Multi selected you will get the strobe effect. The strobe effect is all so present to help the flash set the correct exposure. It's not a problem with the flash or the camera. Spend some time reading through the flash gun manual. I have to admit it is not always clear. Also try Youtube for a video.

Sep 21, 2017 | Canon Speedlite 580EX II TTL Flash

1 Answer

Ttl auto does not work


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
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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.
white1px.jpg
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.
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Apr 30, 2010 | Olympus FL-20 TTL Flash

2 Answers

3000Z and Speedotron Flash power pack


You also may have a faulty hot shoe adapter or pc cord. Check them with an ohm meter, or with an old 35 mm camera. Or just short out the hot shoe contacts with a piece of metal and see if the strobes flash.

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1 Answer

My exposures come out inconsistent


You cannot use the E-10/20N in Program Mode with studio strobes. Studio strobes are not compatible with TTL (Through The Lens) metering. You will need to set the Mode Dial to Manual Mode. Exposure is determined by flash output , ISO and the distance from flash to subject. Proper exposure can be determined with a flash meter.

Aug 31, 2005 | Olympus Camedia E-20N Digital Camera

1 Answer

Studio Strobe not firing with Coolpix


The Coolpix line of cameras require a "tip positive" sync connection to an external strobe unit (when using the Nikon AS-15 Flash Sync Adapter). On some external Studio Strobe units the sync polarity is easy to change because of the type of plug: On this type of connector simply turn the plug around and insert it with the male pin connectors in the other holes. Other types of connectors (such as the standard "phono" plug) are not generally changeable by the user. If the Coolpix does not fire an external strobe check with the strobe manufacturer for sync polarity info.

Aug 30, 2005 | Nikon Coolpix 5000 Digital Camera

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