Hi Everyone, I currently shoot with a Pentax K20, and have the two kit lenses and a 50mm1.4, as well as a few 'non digital' lenses. I am not a pro, by any means, but I do get a lot of requests, and like to shoot mainly children/babies etc. but have been getting alot of requests for weddings as well (which I refuse to do until I have been a second shooter several times, have the right equipment etc) anyways, so weddings will be in my future. Anyways, I am wanting to add a new lens to my 'family', and am looking at the Pentax DA 16-50mm F2.8 ED AL SDM and the Pentax DA 50-135mm F2.8 ED SDM I definitely want a 'fast' lens, but cannot decide between the zoom capabilities of the 50-135, or the wide angle of the 16-50. Any advice would be awesome. Thanks a bunch.