Yeah, I've been surprised at just how useable that lens is. I thought it might be too long a lot of the time and I'd end up using the 45 a lot. But even in relatively small rooms, it's good for chest up portraits and if you're sitting close to the subject, it's still good for close head and shoulders or just head shots. I've used the 45 once since I've had the 75 and the shots I did would have worked fine with the longer lens. Now I'm contemplating selling the 45....
-Ray