I have this Kowa six setup that ive had for a while. I am not too crazy about it, and am saving up for another camera. Are the optics really as sharp as they are hyped up to be? Should i sell it? I have body WLF 90 degree prism 55mm 85mm 150mm metered chimney prism focus ring case How much do you think its all worth? Am i better off keeping it?