I am hoping you guys can help me with a question. We aren't serious photographers but we love taking walks on vacation just looking for shots. We currently use a Nikon D50 that we love.
We have always bought disposable underwater cameras for our diving or snorkeling with mixed results. We don't do it often enough to make a large investment. I found a 6 mp Vivitar with a 4x digital zoom that would probably fill the bill for us; Vivicam 6200W.
Since the disposables are film cameras, there isn't a way to guage the equivalent mp, right? Just curious if we can expect better pictures with the Vivitar or if you guys have another suggestion.
Thanks for you help
It's hard to equate film to megapixels. Megapixels are arranged in an orderly pattern and are all the same size. Film is composed of grains that very in size and pattern. There is great variation between films as well. A piece of 35mm film has somewhere between 3 and 24 megapixels (I've seen estimates that low and that high).
For underwater shooting, I think you have 5 major choices these days:
1) Underwater disposables
2) Underwater point & shoots (Pentax W30, Olympus 790SW)
3) Regular point & shoot with underwater housing
4) DSLR with EWA Marine type bag
5) DSLR with underwater housing
The last is ideal except that the price is outrageous. I've used an EWA Marine bag with decent results on my DSLR (see
here), but I don't really trust the bag. I wouldn't use one far from shore or with a camera that I valued.
Our current solutions are an underwater point & shoot (Pentax W30), which gives marginally acceptable results (see
here) and a regular point and shoot (Canon G9) with an
underwater housing. The housing was only $170, so it wasn't a
huge commitment.
If you are going to go diving, you'll want something that is weighted so that it is neutrally buoyant.