Photography & Videography Underwater Flashcards
7 cards from real PADI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Photography & Videography Underwater flashcards as text
What is the recommended minimum shutter speed when hand-holding an underwater video camera to minimize motion blur?
Answer: 1/60 second or faster
At least 1/60 second shutter speed is recommended for video to reduce motion blur from camera movement and subject motion during filming.
An underwater videographer wants smooth, cinematic footage of a shark circling. Which filming technique is most appropriate?
Answer: Use slow, steady movements and allow the shark to swim through the frame
Slow, deliberate camera movements combined with letting subjects swim through the frame creates professional, smooth underwater videography.
What is the purpose of a red filter in underwater photography?
Answer: Compensates for red wavelength absorption in blue water at depth
Red filters add back the red wavelengths absorbed by water, restoring more natural color balance when shooting in blue water without artificial lighting.
Which type of underwater housing port is best suited for wide-angle fisheye lenses?
Answer: Dome port
Dome ports correct the refraction issues that affect wide-angle lenses underwater, preserving corner sharpness and maintaining the field of view.
A diver notices their underwater housing O-ring has a small nick in it before a dive. What should they do?
Answer: Replace the O-ring before entering the water
A damaged O-ring cannot reliably seal the housing and must be replaced before diving to prevent water flooding and destroying camera equipment.
What camera setting is most important for capturing a fast-moving fish in sharp focus?
Answer: Fast shutter speed to freeze motion
A fast shutter speed (1/250s or faster) freezes the motion of fast-moving subjects, preventing motion blur in the final image.
When reviewing underwater video, a diver notices footage has a greenish tint rather than blue. What does this indicate about the filming environment?
Answer: The water had high particulate matter or algae content typical of coastal or freshwater environments
Green-tinted water indicates high particle matter, algae, or phytoplankton content, common in coastal, temperate, or freshwater environments where green wavelengths dominate.