What is wide?
Anything that is bigger than a basketball is deemed a wide angle subject. By using a wide lens with a 100 degree coverage, you can reach within inches and still maintain an expanded background with your best underwater camera at the same time. By getting rid of the maximum amount of water as possible between the lens and the subject, you will gain better contrast and clarity and more effective light from your strobes.
Don’t overthink about focus
When it comes to wide angle photography, it has a lot of inherent depth of field, and is the amount of your image included in the focus from foreground to background. As you have more depth of field behind your focus point in this case, you can set your focus on the closest subject in the frame which is not in the center always, and makes sure that your entire image is into the focus. If you are focusing on the background, your foreground will not be in focus.
F/8 is the best
By abandoning the aperture set, you can freely control your foreground light with the help of your strobe and the background light with the help of your shutter speed. If you don’t have those controls on your camera, you can use the Exposure compensation or the +/- button on your camera to control the background light.
Look for more than one subject
It adds more to the interest of your photos when you have more than one subject. If your fellow diver is busy taking his own shots and cannot assist you, you can try framing your shot with the dive boat or a sun ball looming in the background.
Look at the blues
In most of the cameras, the auto exposure setting will lead in a background that is way too bright and will have an unpleasing cyan color to it, particularly at the top of your shot. To gain a darker and a calming blue color, you need to increase the shutter speed of your camera or you can adjust your exposure compensation to the minus side if your camera doesn’t have that control.
Work with a model
You can add more to the interest of your image if you add a diver with the wide angle shot. Pay heed to these five tips below to make it work:
Discuss on the kinds of shots you want to implement before you dive in.
Agree on the particular hand signals for how you desire your model to be posed or to swim through the entire scene.
Have your model take a light dive and advise him on where he should point the light.
Make sure that your exposure and focus are duly set before introducing the model to your scene.
Underwater modelling is daunting. When you gain a good image, show the photo to your model to provide them with the encouragement and showing them that their positioning is working well.