Every time you fill up your card (or before it's totally full, if you want), you transfer the pictures to your computer, erase the card, and start over again. The thing is (forgive me if I'm stating the obvious) SD cards are rewritable, and I think the CD-R's that the Mavica uses are not re-writable, right? So with the SD card, you only need to buy one memory card for as long as you own the camera. Cards are also available with much bigger and smaller capacities. Maybe about 77 pictures on a 128 MB card. The Sealife cameras seem to have 3.3 megapixel resolution, so you could expect similar picture capacity to what you get with your CD-R, I guess. The larger thing in the person's right hand is some card reader that SanDisk makes).
(The card itself is the tiny thing being held between the person's left fingertips. You might want to start by browsing around B&H's site, or that of Sealife ( Well, it looks like the Sealife cameras use SD memory cards. I haven't used one of these, so I'm not sure if they offer any real advantage. In your price range, I've seen some made by Sealife, which I found on the website of my favorite camera store: Even these have a removable waterproof housing, and they can be used without the housing outside of the water.
The other option is to get a digital camera that's specifically designed for underwater use. For that reason, some people recommend testing the housing in the sink, now and then, without the camera in it. So one always runs the risk of damaging one's camera.
From what I've read online, most of these work very well, but after a while, seals dry out and they can leak. I have a Canon camera, and Canon makes housings for pretty much all of their digital cameras, as far as I can tell. So, one option is to buy a housing for the digital camera that you already have. Even the ones specifically designed for underwater use come with waterproof housings. I've looked into this a little bit, as I too found that the disposable cameras don't cut it.įrom what I've seen, there's isn't a digital camera that can be used underwater without a housing.
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