Mitch, since you site is actually very simple and contains very little except photos, I'd consider a non flash version with a link on the first page. I'd also consider using flash as an enhancement rather than an esseential element. Some will have to download the plugin to view, so I'd cater to those who don't want to by providing a way to view the images without downloading. You could do this by making the master menu in HTML. I'd also navigate images from the main area. Using the thumbnails above the menu is awkward, some won't figure it out and will exit the site in frustration. The navigation of the scrolling thumbnails is also a bit awkward. I'd prefer to see an array of thumbnails that either don't need to be scrolled at all, or not very much.
Text - it's a bit dark and small
It's hard for me to comment on this as I have a fast connection, but I imagine that dial up users will be left in the dark while a lot of the content loads. You can address this by providing fast loading content that includes text and a small amount of images right from the start. Flash - use a preloader which shows what % has been loaded. Also you can break it up so that they aren't waiting for preloading of too much content they may not wish to see. It's a balancing act.
email - linked to your domain is more professional than a gmail account
I like the fade in / fade out feature, as I think it suits the content and gives the site a nice feel. I think the use of flash would be appropriate if it wasn't the only available option.
I tend to agree with the comment about giving users as much control as possible over how they browse.
Text for the image annotations is definately too small
I think some kind of logo is also needed. Something more than your name in blue text. Even if it is just unique particular font arranged in a more graphic way, or smaller sirname or christian name - how you present your name needs to look designed. The menu on the left looks a little bland.
The composition of the page overall needs to convey that artistry of your work as well. As it stands, I don't think it's working. The area around the image is a frame and is as important as a frame purchased for a print. Again, it needs to look designed, not merely the result of putting an image in the middle of the screen. Of course, this is tricky when you don't have control of the monitor size of the viewer. One idea would be to use a filmstrip below the main image. Users can click on the thumbnails which then load into the main image.
Now that I've spend more time in the site, the lack of control of the main image is getting annoying. It starts to feel like a slideshow. It becomes "sit down and watch the show or leave it." For that to work, it has to be very engaging and short.
Another suggestion you might consider is to use some white on the site. Since your work is black and white, it fits that your site is both black and white. At the moment, it's mostly black and fairly dark grey. I'm a little curious if some white would help. For the most part, I feel the darkness of the site is a good thing, but perhaps some white could also be a good idea.