Okay, I've been a photographer for a long time. And I have been using a single lens reflex camera with an interchangeable lens for a long time (decades!). And I have lost track of how many lenses I have purchased over the years for a variety of brands of cameras (Canon, Mamiya Sekor, Pentax, Minolta, and now Sony). I currently have 13 that I use on a regular basis. But I need a new one. In fact, it arrives today: 150-600 mm zoom lens. I took this photo last year of one of the hawks that inhabit our woods with my old 400mm lens. It's relatively sharp, but I'm looking for improvement. Okay, it's a "want" and not a "need". And here it is a week before Christmas and I'm buying a new lens (my family says this is one of my flaws with timing for Christmas gifts). If my subject shows up again soon, I'll post some comparison photos.