My first zoom was a tammy 28-75. Nice lens, sharp and all, but slow focusing and too noisy for weddings. I sold it, bought the canon 24-70, then sold that when I went to mostly primes. I just landed a huge gig that has me shooting hundreds of product shots of varying sizes. I need a medium zoom so I'm not constantly moving the camera or changing lenses. My 16-35 is too wide and my 70-200 is probably going to be too long. So I found another Tammy on FM and just sent the dude the money. I guess I'll hang onto this lens.