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Making photos under the water with common camera.
Is this possible. Or this need different optics.
Is this possible. Or this need different optics.
exponent137 said:And what happens if water is touching lens (so no air it is in front of the lens, so it is not water-tight). Is it possible to do photos?
mgb_phys said:In that case the front element of the lens will have almost no optical power.
The lens elements bend light because of the difference in refractive index between air (1) and glass (around 1.5), if you replace air with water (1.33) the difference in refractive index is much less and the bending power of the lens is reduced by 75-80%.
It depends on the design of the lens but generally most of the optical power is in the front surface of the first element (especially in wide angle camera lenses) so I wouldn't expect most lenses to produce an image.
Yes, you can use a regular camera to take photos underwater. However, you will need to make sure it is waterproof or has a waterproof housing to protect it from water damage.
In addition to a waterproof camera or housing, you may also want to consider using a dome port, underwater strobes or lights, and a tripod or stabilizing device to help capture clear and steady shots.
To avoid blurry or distorted photos underwater, make sure to use a fast shutter speed and a wide aperture. Also, try to stay as still as possible, or use a tripod or other stabilizing device, and make sure to clean any water droplets from the lens before taking the photo.
Yes, you can use filters for underwater photography. Filters can help enhance colors and reduce the blue-green color cast caused by the water. However, make sure to use filters specifically designed for underwater use and to adjust your white balance accordingly.
In addition to using a waterproof camera or housing, you can also consider using a wrist strap or floatation device to prevent your camera from sinking or getting lost in the water. Furthermore, make sure to rinse your camera and housing with fresh water after each use and properly dry them before storing to prevent any salt or mineral build-up.