Hi guys, first post. I have been researching for a while but have to accept I am overwhelmed with info and would like some advice please. I mainly work with video but I think the principles that matter to me carry over. I make some money from part-time event work and would describe myself as a 'startup' semi-pro. I made the jump from prosumer camcorders a few months back and picked up a panny GH1 from Ebay. Since I got it for a great price and it is somewhat superseeded, I took a further gamble and hacked it to make a GH13. My research identified the 20mm f1.7 lens as a good place to start learning about the camera and I was stunned by how good the results are. I quickly brought it into my workflow and it is now my main camera, with a 4k camcorder as back up!! ( + audio etc ) Thats the background, my question to you guys. I am looking for recommendations of lenses. I will certainly pickup at least one legacy 50mm fast prime and I really like the look of the canon FDs and minolta rokkor options. However, the convenience of a zoom lens in event work would be a huge advantage. In particular, I have found the 20mm to be a great all rounder on the GH1 but need to get too close to the subject for close up shots. I have looked into the question of constant aperture zooms and this is where I get confused. I am going to purchase a Panasonic GH2 body fairly soon and the GH1 will be a B cam. So a simple system is vital where by all lenses work on all cameras which would be equiped with the same adapter. I only use the cameras in manual mode so don't need any auto functions, they cannot be trusted for event work. Even OIS is not necessary as I use pro camera stabilising equipment. So to sum up... am I best off going for a good selection of legacy manual primes, lets say Canon FD for the sake of argument, accepting the disadvantages of changing lenses at the event etc, but clearly saving myself lots of money. Or can anyone suggest a decent solution of a zoom lens the can be used indoors for event video work. Something roughly in the range of 40mm upwards. Also, in relation to the constant aperture 'dilema', I probably won't need to zoom whilst recording (although it would be nice to occasionally) so in this case is it true to say that a good legacy zoom with a variable aperture is adeqaute.... and can anyone suggest one of these too??? A huge thanks for anyone who takes the time to reply to this 'big' first post! I am certain these questions have been asked before so sorry for the repetition if so but hey... I have to post something if I want to talk to you guys dont I. Thanks.