Went on a bike ride with my new 50mm 1.7 manual focus lens yesterday. I was trying take some pics of the ICW and ocean front homes, but they were all blurry. It took me a little bit to realize it was probably because I had the aperture wide open from taking pictures at my house. Sure enough raised the aperature and the picture was better. Is this a result of the same process that creates bokeh? Wide open lens quickly does not let it focus the distant objects right? What would the minimum number I would want to put it at. All of my other lenses can only go down to 3.5 so I've never had this problem.