QUOTE (nprguy @ Dec 18 2005, 10:18 AM)
Thanks, Tim,
I'll take you at your word and ask another newbie question: What would you consider to be the most critical lenses (type and size) to start out with? My priority would be macro (pygmy seahorse filling frame) with a 2nd choice of wide angle that would allow me to get reef scenes at a distance of, say, 25 feet.
Thanks much,
I would suggest you look at the Splashdown site, because the site owner went through just the progression from Olympus PS to Nikon DSLR that you are considering. His experience and recommendations are helpful, and there are lots of photos to demonstrate what the various rigs are able to do. He also recommends some lenses, interestingly the same ones I would suggest.
Here are my recommendations based on your expected uses.
Nikon makes some outstanding macro lenses. Probably the AF 105mm F2.8 lens would be a good first choice ($450+), giving you more distance to subject than the 60mm. It's my favorite on land for closeups, and is a great lens. The 60mm is also great, for larger subjects ($350+). If you want the sharpest closeups possible, these are the ones.
For wide angle, the most popular is the 12-24mm Nikon, but it's very expensive ($900+). You might consider the Sigma 10-20mm zoom at half the price ($450+). You can do some interesting close wide work with these, because of their ability to focus closely while displaying the environment of the subject in the wide background.
Whatever lens you buy, you have to match it with an apropriate lens port for your housing. If you use the Ikelite housing, the ports are listed here for example:
http://www.ikelite.com/web_pages/2port_nikon.htmlThese two lenses, a good macro and a wide zoom, will do nicely for a start, and I would get some experience before buying more.