I'm a graphic designer (and just a hobbiest photograher) so my perspective might be a bit different.
I feel you still need to develop some kind of brand. That doesn't mean an over-the-top logo, but you need something IMO. Yep, a graphic isn't as good for google indexing, but the current site title looks terrible and detracts from your image as a fine art photographer.
It's screaming for some nice typography which will add a sense of branding and ultimately credibility. Photos are wonderful - but the overall 'brand' is ordinary to me. Sorry if this sounds harsh.