Folks, I need your opinion here... I have: Nikkor 35mm f/1.8G Nikkor 50mm f/1.8D What I'm considering: Tamron 28-75 f/2.8 Would this be a good move? I'm losing some speed but I think I'm OK with that since I could go to one useful lens. Uses: General around the house kid photos. Family events/holidays. Portraits I'd need to sell the two primes to get the zoom, I appreciate your input here.