I have the 503cx with the 50mm and 80mm CF(E) lenses. It came with the viewfinder as well as the pm90, after having used both I decided to sell the pm90 for the viewfinder is fantastic, I like to shoot at waust lenght it does improve your shots. As for a tripod you will need one to get the maximum result. I find that a Manfrotto 190 works well, it's transportable, light and will just hold the 503 with the 40mm lens. As for the TTL flash feature, I don't use a flash ever. I have 3 backs all with the holder (you will loose the darkslide, or at least misslay it often) Furthermore what can I say... it's a terrific camery, sturdy and dependable, and nowadays affordable too.... I'de say go for it