digital vs. optical zoom on dgtl cameras

[raxafarian]

the threaded attachment refers to the physical size of the opening that an add-on lens will screw into. You have to match the lens to the camera... sometimes step-up or step-down adapters are needed.

The attached lens will have a magnification associated with it (a wide angle lens will have a .56x or similiar rating, while a zoom attachement will be a 2X, 3X, etc.)

 

[colonelchuck]

I'm a newbie diver, but have had some experience in the film-digital-SLR world.

An excellent source of information is
http://www.dpreview.com/
the stuff there will answer lots of questions and offer the plusses and minuses on cameras, CF cards and lenses.

There are also some excellent links off this site.

I have a Canon D60 SLR which now takes all the photos on my website (somewherewest.com). I note that there is an underwater case for the D60. The Nikon D100 is also an excellent SLR.


cheers