I have a Canon EOS Rebel X with the 2 lenses it came with new, one of which is 35-80 telephoto (I think). It has AF and MF though I have never learned how to use MF. I've taken some good pictures with this camera over the 7 years that I've owned it- all by trial and error (lots of error). Now the problem- my neice is getting married next month and her parents cannot afford $1500 for a professional wedding photographer. Plain and simple- they can't. And, you guessed it, they have asked me to do the pictures. I want another lens for this project and I have been searching e-bay. I cannot afford an expensive lens. I have seen quite a few that I hoped might be appropriate so could someone please advise me? The ones I am looking at include the following: 78-215 Zoom lens- Canon EOS Rebel, Canon EOS m+70-300 macro zoom lens, Sigma 100-300mm f/4.5- 6.7 DL lens-Canon SLR, and a Canon EF Ultrasonic 75-300 lens for EOS, Rebel. It seems the more I read, the more confused I get with all the technical information, so- could someone please help me out here? And, please don't bother telling me that I am in way over my head with this project- I already know that but I am stuck with it and therefore I will do the best job I possibly can.