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Underwater Photography

Underwater Photography. Basics. Underwater Photography - Equipment. Compact – point and shoot D/SLR. Compact – Advantages. Smaller size for travel Less drag underwater Ability to change lenses underwater (Wet lenses) Much less cost  Less weight, easier to carry and beach dive with

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Underwater Photography

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  1. Underwater Photography Basics

  2. Underwater Photography - Equipment • Compact – point and shoot • D/SLR

  3. Compact – Advantages • Smaller size for travel • Less drag underwater • Ability to change lenses underwater (Wet lenses) • Much less cost  • Less weight, easier to carry and beach dive with • With wet lenses, you can shoot macro, Wide-angle, and video all in 1 dive

  4. Compact - Disadvantages • Smaller sensor (more noise, smaller dynamic range, etc.) • Increased shutter delay and focus delay optics are a lesser quality • Less choices for good quality lenses • Only a couple models can shoot in raw and use a true fisheye lens • Very slow raw write speeds, if raw is offered Less battery life • Less control over depth of field. A larger-sensor dSLR will have a smaller depth of field at a large aperture, giving a blurred background that is difficult to accomplish with a compact camera.

  5. D/SLR Advantages • Nikon, Canon, Olympus, Sony and Fuji • Ability to shoot in RAW • More camera features available • Aperture settings • Shutter speed settings • Depth of field

  6. D/SLR Disadvantages • Difficult to access camera features • Difficult to remember which button performs which function • Two handed operation needed for accessing most camera features • With housing and lighting set up is very bulky, adds drag and can be difficult to capture fleeting moments

  7. Underwater Camera Features • Full manual mode available • Good quality UW housing available • Close macro mode, although this is less important if you are going to use wet lenses • Ability to take wet lenses, macro & wide angle • Ability to take a fisheye lens. • Low shutter lag

  8. Underwater Camera Features • Long battery life • Ability to view histogram • Ability to manual white balance • Raw mode • Ability to fire strobes via sync cord • Good auto focus capability • It should be easy to adjust the aperture and shutter speed UW

  9. Underwater Camera Choices • Waterproof cameras – no housing • 10 ft for snorkeling only • 33-40 ft for snorkeling and shallow dives (free diving) • Housing • Camera specific/Sport • Full, partial or limited use of all control • Kits

  10. Camera and Housing Choices • Panasonic • 40 ft no housing • Leica 4.6 WA 28-128mm • Fast autofocus • Short shutter lag • $284.20 (B&H) • Aqua Tech Sports Housing for Nikon D700 • 33 ft • Interchangeable lens ports • TTL flash compatible • Need Lens port • $1,894 (B&H)

  11. Camera and Housing Choices • Ikelite Housing Nikon Coolpix S3100 • All controls • WA lens • External Color Filters • 200 ft • 1.3 lb • $259.95 (B&H) • Aquatics Housing for Nikon D700 • TTL Compatible w/adapter • Moisture alarm • Double Nikonos Bulkheads • All controls • Multiple lens compatible w/lens ports • 300ft • 7.2 lb • $3,100 (B&H lens not included)

  12. Camera and Housing Choices • Bonica Sony DSC-W350 Camera, Housing & Light Kit • Color correcting light • 130 ft • 14.1 mp Carl Zeiss Lens • $919 • Sea&Sea Housing for Nikon D300S Flat Port Pkg w/YS-01 Strobe • Double Nikonos bulkheads • 200 ft • Leak sensor • All controls • TTL compatible • $4,499.95 (B&H)

  13. Underwater Lighting • Water absorbs light • Light levels drop at lower depths • Red is absorbed faster than blue, causes loss of color especially at lower depths • Water sucks contrast and sharpness • Need to get close to subject • Four sources for light • Strobes • Dive lights • Focus lights • Sun

  14. Underwater Light Quality • Amount of light • Color of the light • Direction of the light • Amount of diffusion or softness

  15. Loss of Color Underwater • Water absorbs different light wavelengths to different degrees • Longest wavelengths absorbed first • Colors disappear in order that they appear in the color spectrum, ROY G BIV • Color disappears • Red 15 ft • Orange 25 ft • Yellow 35-45 ft • Green 70-75 ft

  16. Loss of Color Underwater • Horizontal distance counts! • Strobes light subject 5 ft away, light travels total of 10 ft (5 there and 5 back), significant loss of reds • Must get close to subject! • Brain compensates for color loss • Think you see red and orange • In ambient light shot red and orange are gone!

  17. Scrawled File Fish

  18. Coral Formation

  19. Reflected Light Underwater • Light penetration depends on surface conditions • Choppy water reflects more light • Sunlight from horizon reflects more than sunlight from above • Brightest conditions 10AM to 2PM on sunny day • Early morning or late afternoon light has soft quality

  20. Backscatter • Caused by strobes or internal flash lighting up particles in the water • Point strobes away from subject

  21. Backscatter • Take photos away from other people • Use proper fins and frog-kick, achieve perfect buoyancy • Shoot macro only from a few inches • Don’t shoot against open water, use the reef • Edit in Photoshop if it happens

  22. Backscatter

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