Any advice would be really helpful! I'm looking to buy a new camera but the most important thing to me is image sharpness. I started off looking for a camera and then looking for a lens, someone in another tread, said that really, I should be choosing the lens first. I currently have a Canon 10D and I want to update it as cameras have moved on quite a long way now. I'm not fussy about sticking to Canon. I would be quite happy to switch brands. All I really want is a 35mm equivalent of 30-55mm anything within that range would be fine. Probably a prime lens but a zoom lens is fine as long as it didn't compromise the image quality. I would quite like it to be fast too, maybe F 1.4 to F2. I will be using it mostly for night scapes with a tripod, I know I don't need a fast lens for that but I would like to have that shallow depth of field for other photography. Trying to just buy one really good lens rather than a range. Currently I have been looking at: Pentax K5 SMC Pentax-FA 31mm F1.8 AL Limited - Sony A580 Sony 24mm f2.0 ZA SSM Distagon T* - Panasonic GX1 (I know it's not out yet but looks like it should be good.) Panasonic LUMIX G 20mm f/1.7 At the moment, in most cases the lens cost more than the body I'm not worried about fancy tricks the camera can do. I would be quite happy with a complete manual really. Although, I would like to be able to print the images about 800mm wide. Low noise in the shadows is important too. If anyone has an opinion or experience with this kind of thing, I would be most grateful. Cheers.