Hi, I recently purchased Sony A7 camera with Sony 28mm F2. I also have from before Minolta MD 50mm f1.4 lens. Not that I am not happy with Minolta lens, but I was looking for little bit wider lens for street or walk around. I have read a lot good reviews about Voigtlander Nokton 40mm f1.4 lens as very good combo with A7 cameras. I was wonder if anyone had any experience with both lenses and what would be impression regarding sharpness, IQ and colour. Is it worth spending $450 as an upgrade from Minolta to Voigtlander? Thank you.