Grouper Underwater Camera Settings and Technique

Grouper Underwater Camera Settings and Technique

Spend a week diving the reefs of Little Cayman and you probably won't order grouper at a restaurant again. These large fish will not only approach you, they will even try to come in contact with you. When you look into their large eyes, they seem to be trying to convey a message. They are. The message is: We should hunt together.

We have watched them follow large eels across the reef, trying to spook small reef fish out of their coral caves. They will do the same thing with divers, hoping for a spooked reef fish to come close enough to grab. When you set up to capture an image, the grouper will often swim around the back side of the coral trying to find the back door that small fish might exit from. With their unique markings and social nature grouper are a ton of fun to photograph. 


Steve miller grouper photo little cayman taken with ikelite housing and strobes

F-16 • 1/160 • ISO 100 © Steve Miller 



Grouper is a name applied to various species of sea bass. In the Caribbean, there are diving areas that have been protected for so long that the grouper residing on the reefs show no fear of divers or cameras - in fact, they will swim to you and even follow you on your dive. One of our favorite places for this is Little Cayman.

DSLR + Mirrorless

ISO: 200 to 400

Mode: Manual

Aperture: Variable through whole range, depending upon how dark or light you wish your background to be. Start with F-8 if you aren't sure, then change after previewing your image.

Shutter Speed: 1/125 to 1/160 flash synch.

Lens: 8mm to 100mm. Face shots and eyeball shots are beautiful, even a section of their skin or lips can make nice image. But for the big ones it's nice to have a super wide zoom lens - particularly fisheye.

Point + Shoot

ISO: 100 to 200

Mode: Manual or Aperture Priority. If you are shooting natural light, Program will work as well.

Aperture: Full range depending on sun in your frame.

Shutter Speed: 1/125 to 1/200

Lens: Full wide angle with or without a wide angle wet lens.


steve miller grouper photo close focus wide angle taken with ikelite housing and strobes

You won't have much trouble getting a Close Focus Wide Angle shot of a grouper, their inquisitive nature means they'll enjoy getting close to your dome port. F-18 • 1/160 • ISO 100 © 2022 Steve Miller



Grouper will gaze into your dome port, less than an inch away. This can make for very sharp images, since very little water will be between the lens and the fish. Keep this in mind when positioning your strobes and selecting a lens to use. For fast focus and an extreme depth of field, fisheye lenses excel. This is one of the few times that a wild animal will be such a cooperative subject. As you shoot, remember that the frames with the most severe upward angle will reward you with the gradient of light from the surface, your background will be brighter and more saturated with these angles.



Generally, we like to position our strobes away to minimize scatter in the frame. If you are shooting from a few inches away, you will need to point the strobes inward, or the center of their face will be in shadow.


steve miller grouper close up shot taken with ikelite housing and strobes

F-10 • 1/125 • ISO 100 © 2022 Steve Miller


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Additional Reading

Close Focus Wide Angle In Depth

Why You Need a Fisheye Lens Underwater

Turtle Photography Underwater Camera Settings

Just Below the Surface | Shooting on Snorkel in Grand Cayman

When to Use a Compact 8" Dome Port Underwater 

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