I just got my Lee .9 ND filter from BH. I had a short time to test it out. I shot a few wide open (F/1.2) with filter and without filter. I have a sharp copy of the 85L that only needs +5 MA. When using .9nd filter, photo are a lot softer compared to when there's no filter. I know people say when you put filters on your lens, it will degrade IQ. But I didn't think it would degrade it that much. I found better results when I changed my MA to +20 for a sharp photo with the filter on.
Is this normal? I thought that Lee filters were top of the line filters. After spending 120 on the filter, I'm having regrets. I will post some photos up soon.