Hello! I'm a film student currently doing her thesis, and since it is about astronomy, I'll be shooting stars and nightscapes. I'm looking for a fast lens that is wider than my 50mm prime lens, preferably a 20mm lens or wider, and f2.8 or faster. The Panasonic 20mm f1.7 lens would be great for my purpose I think, but unfortunately, the price is too steep for me so I'm looking for someone who could rent me theirs. The 14mm 2.5 lens would also be great :) Or if anyone knows where I could rent those lenses, please inform me! :) Canon fd lenses would also be perfect, as I only have canon fd adapters for my Panasonic Gh2. Hope someone can help me out, thank you! :D