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Help me get my top down.

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  • Help me get my top down.

    Hey all, been trying for some decent top down shots. I have used a glass pyrex dish but cant seem to get pictures without light reflections from the MH or Vho actinics. Camera is a Nikon D70. Any suggestions?

    CAReefer
    265 gallon SPS tank. Bubble King 300 Internal, MRC CR-6 Calc Reactor. 3 400 watt 20k Helios. 90 gallon Frag tank plumbed into main display.

  • #2
    How about bulding an acrylic box to go around the lens that will mount where the tripod monts on the bottom of the housing. That was you can stick the end of the lens into the water and no more glare.
    Dustin

    "Water is the driving force of all nature"
    Leonardo da Vinci

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    • #3
      I am using a Schuran flowbox, pressing the objective directly to the bottom disc:

      http://www.schuran.com/seawater/hobby_zubehoer.html

      G.Alexander

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      • #4
        Naka seems to know he has some nice shots there
        Nick
        Nick
        180G SPS Mainly
        10 Bulb T5 Starfire
        Calcium Reactor
        3 Tunze 6105's
        Profilux Controller
        ATB Return w/ wavysea
        ATB M External Skimmer


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        • #5
          Madison will make you a cool acrylic cylinder for this.. $15 shipped or so was what I paid...

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          • #6
            Okay, so now I have my acrylic cylinder, need some pointers. I still can't seem to get pics without reflections of lights or the front of the camera. I am trying to keep the cylinder flat. I have tried tipping it slightly but have some concerns for getting my camera wet. Kinda awkward trying to hold cylinder in the water, hold the camera, get in focus and finally pushing the button all while trying to keep a $1000 camera dry.

            Heeeelp!
            CAReefer
            265 gallon SPS tank. Bubble King 300 Internal, MRC CR-6 Calc Reactor. 3 400 watt 20k Helios. 90 gallon Frag tank plumbed into main display.

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            • #7
              Does your lens rest on the clear acrylic? if so, you shouldn't be getting any kind of reflections.

              If you want the tube shorter or longer let me know and i'll get one out to you monday.

              Try using auto focus until you get the hang of using this. Then hold the tube with one hand while pressing the button with the other. I'm sure you used it as a "viewer" also and you can see that once the tube enters the water the reflections, waves, etc dissapear.

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              • #8
                Haven't tried putting all the way to the bottom of the tube. Still working up the nerve. I need to get a taller step stool as the tank top is nearly 6 feet off the ground. Standing on a chair ain't cuttin it. Probably the best I will be able to do is point and hope. As there is no way I can get into the back 1/2 of the tank without climbing into the canopy, and at 6'3" 260 lbs, that ain't happenin anytime soon. Thanks for the tips, I will try them out in the am and let ya know.

                Marshal
                265 gallon SPS tank. Bubble King 300 Internal, MRC CR-6 Calc Reactor. 3 400 watt 20k Helios. 90 gallon Frag tank plumbed into main display.

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                • #9
                  Okay, here are a couple. Shadowing seems to be an issue that I hadn't planned on. Only had 2 decent ones. Any other tips?




                  CAReefer
                  265 gallon SPS tank. Bubble King 300 Internal, MRC CR-6 Calc Reactor. 3 400 watt 20k Helios. 90 gallon Frag tank plumbed into main display.

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                  • #10
                    Those are really nice!!!

                    I'm sure it's hard with the tall tank and all but if you can try and see the LCD that will help dictate where focus is going to be. Also try checking to see if you are casting a shadow or not.

                    If there isn't water coming in the bottom of the tube, then put the lens as far down as you can. I know the feeling your getting but that's the best way to do it

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                    • #11
                      what lens are you using?

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                      • #12
                        Good thought Madison, but.... The Nikon D70 doesn't use the LCD for framing pics. Strictly for post picture viewing and menu settings. I have the 28-105 mm, 1:35-4.50 Nikon lens. I also have a Canon A95, but the lens doesn't reach the bottom of the tube. With the pivoting LCD this would be ideal. Maybe I will trim an inch off for use with the Canon and get another for the Nikon.

                        Marshal
                        265 gallon SPS tank. Bubble King 300 Internal, MRC CR-6 Calc Reactor. 3 400 watt 20k Helios. 90 gallon Frag tank plumbed into main display.

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                        • #13
                          or I can just send you one made to your specs for the canon.

                          I forgot you were using the D70. My Canon is the same way. I should have known.

                          It looks like you might have to shoot blind and take lots of shots.

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                          • #14
                            Pretty much what I did. I took about 20 shots in the limited time I had. Only the 2 worked out fairly well. Started vacation tonight, so the next day or so, should have plenty more. One problem is that most of them are so close to the surface that I can't get the camera to focus at that close of a distance, <1". Oh well, could be worse things to complain about huh?
                            Thanks
                            265 gallon SPS tank. Bubble King 300 Internal, MRC CR-6 Calc Reactor. 3 400 watt 20k Helios. 90 gallon Frag tank plumbed into main display.

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                            • #15
                              Well there are two things you can do.

                              1) try using the canon. I'm not sure on the minimum focus on it, but i'd bet it's closer than the Nikon can get.

                              2) get a 50mm macro for the Nikon. That lens would work great for that kind of photography, but you have to spend a little cash.

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