Life In The Seas Brain Coral

 

 

HomeGalleriesAbout George PerinaContactBuy ImagesGuide to Underwater Photography

   
     Digital Photography Basics
 
     Film vs. Digital
 
     Underwater Photography
 
     Underwater Housings
 
     Underwater Strobes
 
     Lenses
 
     50/50 Photography
 
     Tips and Tricks
 
     Care & Maintenance
 
     Suggested Reading
 
     Recommended Software
 
     My Equipment
 
     Useful Links
 
 

50/50 Photography (continued)

The first problem stems from a mixed environment. Lenses which were designed to focus in one environment (air) must now also be able to focus through water.

The second problem is that water absorbs light much readily than air. As a consequence, there is less light below the water than there is above --the photographer can either expose for a subject above the water, or below, but not both. So how does the photographer get around these limitations?

In the first case, the best way is by utilizing a split-diopter accessory lens. A split-diopter lens is merely a screw-on filter that fits over the primary lens. Split diopters are essentially photo-quality magnifying lenses cut in half and mounted in a rotating bezel. (most camera retailers either carry or can order a split diopter from a distributor).

 

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