OK I know this has been beaten to death on forums, but I have to ask again. I got my 45-200 on friday afternoon. I like the FL a lot. I like when I shoot somewhat close. When I shoot farther away it's hit or miss with sharpness, while that's workable since this won't be my main use lens. It do have to use S-AF+MF since AF alone won't cut it. I knew that going into it. I bought it over the 100-300 based on weight. I really want that lens but it's too much. Now today my arms and hands hurt from lugging it around the yard all weekend. It's the same weight as my 55-250 but the camera is 10ozs less. I thought I'd be ok. But my darn health has been getting worse over the last month. Now I just can't do it. Even this slight lens is too much and it's killing me to admit this. Is the 40-150 a good lens? I wasn't looking at more then in passing as I wanted more reach. How is it at distances? Are birds do-able with it? I know it's range is NOT a bird lens. But my darn birds get so friendly I can shoot them with a normal to wide some days! It'll be more frustrating with the birds on our walks, but I'm going to have to make do. I just don't know how much longer I'm going to be able to do that kind of shooting. Which depresses me. I wish they would come out with some magical 8ozs 300mm lens!