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You are right with the Van der Waals equation and your calculations. However what does this really accomplish?? You could use the redlich-kwong EOS, Clausius EOS, Beattie-Bridgeman EOS or any other equation of state that sticks in coefficients to to account for a gases deviation from ideal...

I made two dive trips to Montserrat in 2009. It is a bit of a hassle to get to since only tiny 19 seater aircraft fly into the island. However, the diving was very good by Eastern Caribbean diving standards. Lots of bigger fish, lobster, rays snake eels etc.

Most Caribbean DM's / Instructors I know wear fullsuits. Only a couple wear shorties but the majority wear 3 mm fullsuits and quite a few 5 mm because of repetitive diving despite it being in warm water.

Pics taken with Canon G10 in WP DC-28 with Sea & Sea YS 27 DX and Inon UCL 165 m67 wet lens. Dive Operator: Pro Divers Enjoy! Spotted Anemone Shrimp Hawksbill Turtle Foureye Butterflyfish Chain Moray Barred Hamlet Hawksbill Turtle

All Pics taken with Canon G10 in WP DC-28 housing and Sea and Sea YS 27Dx strobe and INON UCL-165 wet lens. Dive Operator: Pro Divers St. Kitts Comment and Critique Welcome! Enjoy! Diamond Blenny Triplefin Hermit Unknown Tube Blenny If you know the fishes in pic #2 or #4 let me know!

Having your camera positively buoyant may not be the best of ideas. If you let go of it underwater it will shoot up and be wayyy more of a pain in the neck to go retrieve. If at any point during the dive you need to rest it down, it would be impossible since it will always float away and lastly...

All pics taken with Canon G10 in WP DC-28 with sea and sea YS DX27 and INON UCL-165 wet lens. Comments and critique are welcomed and encouraged! Enjoy! Spotted Anemone Shrimp Juvenile Red Hind Lizardfish Lizardfish Leech Headshield Slug Giant Anemone Unknown Crab Juvenile...

All pics taken with Canon G10 in WP DC-28 and sea & sea YS 27DX and YS 17 and Inon UCL - 165 wet lens. Comments and critique welcome! Porcupinefish Pederson Cleaning Shrimp Coney Scorpionfish Orangespotted Goby

All pics taken with Canon G10 in WP DC-28 and sea & sea YS 27DX and YS 17 and Inon UCL - 165 wet lens. Comments and critique welcome! Very bad vis today so a few macro shots. Neon Goby Christmas Tree Worm Tube Sponges Lizardfish Red Hind

All pics taken with Canon G10 in WP DC-28 housing, Sea and Sea YS DX 27 & YS 17, Inon UCL-165 wet lens. Comments and critique welcome! Spotted Anemone Shrimp Nurse Shark Eye Southern Stingray Longspine Squirrelfish Feather Duster Green Moray

Thanks... That jawfish shot took quite a bit of patience as you can imagine...Should be posting some more pics from today this afternoon... Glad you enjoyed this set!

All pics taken with Canon G10 in WP DC-28 and sea & sea YS 27DX and YS 17 and Inon UCL - 165 wet lens. Comments and critique welcome! Yellowhead Jawfish Sponges Squat Lobster Shrimp Goby Feather Duster Pike Blenny Yellowhead Jawfish

Thanks!... May 11th pics coming up soon, check em out !

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The Bigeye has truly out performed my expectations. Heard a lot of neagtive reviews about it, however, I was very impressed.. the lens glare is there but you can work to minimize it also if you zoom in just a touch it doesn't show up... The two wide angle shots were taken with it and I'm happy...

Comments and Critique Welcome!

It all depends on the conditions. In darker/murkier water you may want to use a shutter speed which is a little slower to allow a bit more light in ex. 1/30 - 1/40 and an f stop of 5.6 and up .... If the water is clear with a lot of ambiant light, I use higher f stops and shutter speeds up to...

I've never owned the YS 110a but I do have a YS 17 which I've knocked around for a while and it does a very similar thing when the batteries are low. Have you checked / replaced yours?