Pentax 135mm f2.5: Optical Performance

it to the minolta 2.8 celtic also wide open so let's take a look and see the difference so the celtics a little bit larger lens um as you can see it's pretty sharp too um even though it's shot at two eight compared to three five i think it's pretty close in sharpness but you can see the contrast

all right so we have a winter scene here this is going to be a test of the lenses in a landscape so first one we're looking at here is the minolta 35 shot wide open at 3.5 and i'm going to do a little comparison here i'm going to keep it at 3 5 on the left and push

so by the time this lens was manufactured Pentax had a long history in producing Optics but what about this particular lens the lens has good sharpness even short wide open at f2.5 stopping down increases contrast and by f8 it's as sharp as you'll ever need the black and white show a beautiful…