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For underwater photography, Nikon camera and flash

Underwater photography is an important facility within the world of photography, and it is not as difficult as some might think, especially if we are equipped with a specialized camera and flash for use at a moderate depth of up to 160 feet.

Nikon company presents its new achievement in the form of a new plunger camera, (Nikonose V), 35 mm for underwater photography and in all weather conditions. This camera is characterized primarily by having two exposure modes - automatic and manual - and when used with the new Nikonos Speedlite flash (SB-102), it allows divers to practice automatic exposure underwater for the first time, as a major step to facilitate underwater photography.

This new camera has been designed to feature excellent workability both in and out of the water.
It includes an exposure indicator (LED) for clarity of vision inside the viewfinder, and like its predecessors in the Nikonose series, this camera is not affected by water, sand, salt, or bad weather, and it does not need a special packaging for use under water, as it is completely sealed against leakage to a depth 160 feet - about 47 meters After this depth, additional packing becomes necessary.
When adopting the automatic exposure system, Nikonos 7 gives automatic adjustment through the lens with a preferred aperture, giving non-adjustable shutter speeds from 1/1000 to 1/30 of a second.
There is an indicator (LED) in the viewfinder that shows the shutter speed chosen by the camera.
With the adoption of the manual system, the photographer has the freedom to choose between five adjustable shutter speeds
with quartz.
It ranges between 1/1000 and 1/30 of a second, and here the expression device remains operational so that the photographer can compare the selected nomadic speed with the speed suggested by the counter. To create special effects, use the flash with ambient light.

With the adoption of any of the two automatic systems, there are LED lights in the form of an arrow indicating exaggeration or underexposure, or a slow shutter speed that usually causes a blurry image.
The camera has a site (M90) that secures a mechanical release of the shutter at a speed of 1/90 second, as a means of support in the event that the batteries stop fulfilling their tasks. The camera is also distinguished by a site (B) for a temporary exposure.

And you understand, Nikonos 7. My lens is 15 mm f / 2.8 (RW) and 28 mm f / 3.5 (Uw) for underwater work only .. And my Nikkor (17) 35 mm f / 205 and Nikkor 80 amphibious lenses can be used under the f / 4 mm, and they are two lenses water and above it. As well as a lens (LV) 28 mm f / 2.8 to work with it above water only.
The new camera can also be used with Nikonos equipment and accessories, as well as lenses from the previous Nikonos series, with the exception of the older 15mm lens, which works in manual mode only.

The camera body weighs 695 grams and is made of aluminum alloy with a special mixture, and all the meeting points between the pieces are sealed with gaskets in the form of rings to ensure their resistance to water under pressure.

The electronic shutter and the light expression device are powered by two 1.5-volt batteries or one 3-volt lithium battery.
Also, all the controls of this camera are large so that they can be operated even while the photographer wears gloves, and there is a high viewfinder, which allows the photographer to accomplish his work while wearing this swimming mask. The camera is available in black with an orange rubber surface for indication, or green for camouflage.

Flash (102-SB) for working under water

The flash is of paramount importance in the field of underwater photography because the water filters the light from above so that the colors in the light spectrum consume shade after shade, so the red disappears first, while the green lasts at a depth of 100 feet, so the color remains for a later period before it disappears when the blue is alone. The whole picture is blue -
However, with the presence of a specially equipped flash for underwater work, the colors return to normal, and it is easy to obtain a natural and wonderful picture of the pulsating life underwater.
And if we started with the Nikonose 7 camera, for underwater photography, we must refer to the Nikonose SB-102 Speedlite flash that Nikon offers specifically for this camera.
The new flash (SB-102) was designed to ensure good tuning through the lens (TTL) and to operate fully automatically in line with the operations of (Nikonose 7) under water, so that it can first operate like it at the same depth - 160 feet - and in different weather conditions.
The flash is equipped so that it can cover the image angle of a 28 mm lens, but if we want to use it with a 15 mm lens, we can do that as well, but with the use of a light diffuser (*).

The flash is characterized by an indicative number of 1000 aza, with a power of up to 106 feet - 32 meters - and within fields ranging between / 8.2 and / 22, and a speed range between 25 and 400 aza. We mention here that the use of two flash units (SB-102) becomes It is possible with a special (Y) synchronization wire while maintaining automatic exposure control, and the flash can be used wirelessly so that it is fired by the main flash with manual exposure.

The SPID sensor works on reading the flash light as it passes through the lens, and so the exposure becomes automatic even through the use of filters and connecting tubes. If changes are made to stops, then the exposure is corrected automatically.
The same applies to adjustments to the distance between the flash and the subject.
On this basis, the flash control system gives the photographer complete freedom for multiple uses. With direct or bounce lighting inside and outside the water. It allows synchronization effects, and negates the need for calculations in close-up photography.
This allows ages to pay attention to his creative work, away from focusing on the details of distance and the like.

In the event that the flash is prepared incorrectly, the LED light starts blinking within the viewfinder, which avoids any error.
The (SB-102) operates on the energy of 6 nickel-cadmium or alkaline, manganese-class C batteries. In the event that we use the aforementioned nickel batteries, the flash readiness period to operate between one flash and another is approximately five seconds. It can also get 70 flashes before recharging.
With alkaline batteries, it gives about 120 flashes, but it takes about 14 seconds to get ready between one flash and another.