Photography & Videography Underwater Flashcards

What is the primary reason buoyancy control is considered a fundamental skill for underwater photographers?

Answer: Stable buoyancy allows sharp images and prevents damage to the reef from photographer contact

Excellent buoyancy control keeps the photographer stable for sharp images and prevents accidental fin kicks or body contact that damage fragile coral and marine life.

What does the term 'sync speed' refer to in underwater strobe photography?

Answer: The fastest shutter speed at which the camera can properly expose with a strobe

Sync speed is the maximum shutter speed that allows the camera's shutter to be fully open when the strobe fires, preventing partially black frames.

An underwater videographer wants to film the same coral reef scene with two different cameras simultaneously. What consideration is most important for matching footage in editing?

Answer: Frame rate, white balance, and color profile settings should be matched between cameras

Matching frame rate, white balance, and color profile between cameras ensures footage can be seamlessly intercut during editing without visible color or motion mismatches.

Which behavior should an underwater photographer AVOID when photographing a resting sea turtle?

Answer: Circling the turtle or blocking its path to the surface for air

Blocking a sea turtle's path to the surface is dangerous because turtles must breathe air; circling or trapping them causes stress and violates marine life interaction guidelines.

What is the benefit of using a wide-angle lens with a close focus technique (CFWA) in underwater photography?

Answer: It captures a large, sharp background scene while focusing very close on a foreground subject

Close focus wide angle (CFWA) places the lens extremely close to a subject while capturing the expansive reef environment behind it, combining intimacy with environmental context.

What causes the phenomenon known as 'blue corner effect' in underwater wide-angle photography?

Answer: Peripheral light falloff caused by the dome port refracting light unevenly

Dome ports can create slight vignetting or color shift at image corners due to optical refraction at the curved port edges, sometimes visible as a blue tint in corners.

When should an underwater photographer prioritize the dive over getting the perfect shot?

Answer: Always — safe diving practices, gas management, and buddy awareness take precedence over photography

PADI emphasizes that photography is secondary to dive safety — gas management, buoyancy, buddy contact, and situational awareness must never be compromised for a shot.