I think your decision shouldn’t be based on features of those two particular cameras. You’re standing at the crossroad to decide between two systems (brands) which are quiet different in many aspects. When jumping into the (D)SLR world it’s difficult to evaluate all pros and cons between two systems for future system extension. I shoot Canon. If I would start today from the beginning to build up an underwater camera rig, I most probably would go for the Nikon D200 for some reasons. I’ll just throw in some harsh critical points on the E system from my side. Maybe they are worth to be considered for your own brand/system preferences.
- focus by wire. no mechanical focus ring with stop end like all other DSLRs. Personally I prefer a real mechanical ring.
- 4:3 image aspect ratio. I prefer classic film aspect ratio (3:2, like all other DSLRs) which has established in the past for good reasons. I don’t like the TV aspect ratio 4:3 (for shooting stills), featured by most compact digicams and the Olympus E system
- digital available light photography starts to become popular in combination with filters (have a look at www.magic-filters.com or some threads here in the board). As far as I know the only true Olympus E wideangle 7-14mm doesn’t allow filter installation at all. Maybe the new announced Olympus fisheye suffers under the same disadvantage.
- Lens costs. Olympus glass is expensive. No matter if the prices are justified or not, you have to pay a lot of money when building up the E system. For example, around 2000 bucks for the 7-14mm and 500 bucks for the 50mm macro. No third party choices here so far (which aren’t bad at all and start at a few hundred bucks).
I know this is a very single-sided post and to be honest, I’ve just shot a few pictures with an Olympus E-300 and can not comment on the system. The above points are only a few items I personally would dislike when jumping into the Olympus E system.
Julian
PS: I hop Helge is not reading here