Today I tested the Minolta f2 50mm and I could not see a big difference from the Minolta Rokkor-X f2 50mm I tested the day before. I still get pretty sharp images! I tested this one inside on 2 of my cats and some flowers and also outside with my daughter and Lennox again. I do see some specs of dust/dirt on the inside of the lens beyond the glass, but that didn't seem to affect the images. Here are some of my shots with this lens and once again, I am impressed by this vintage lens! I only had two vintage Minolta lenses and I am very pleased with them! Next to text will be my Pentax series of lenses.