Hi all. I will likely be looking for a new 28mm lens which will be used primarily for landscape work - typically stopped down a fair bit. A secondary consideration is fairly decent performance when used wide open. Having said that, landscape is my primary use. I am not looking to blow the bank on this one so would likely end up with a non-Leica brand lens. What are some of the proven performers in this focal length? Zeiss? Konica?