Originally posted by ARCASIA Hi Sergio,
Thanks so much for your presentation of evidence regarding this lens. And no, your post is not too long. It is really great how your photos so vividly show the effect of no anti-aliasing filter. It is not often that we get such a persuasive post - there has been too much impulsive impuning of Pentax lenses lately based on unscientific comparison of a few quick photos or reference to the opinions of others.
True, your evidence can be easily dismissed by alluding to product variation. It is odd though, I have owned nearly 20 Pentax 67 and 645 lenses over many years, including the FA 35/3.5, and not one exhibited the negative characteristics so often referred since the availability of the 645D. And many were bought used. But of course, what do I know, I just use film!
If only the naysayers could present real evidence as you have to implicate all of these poorly designed lenses manufactured without any QA to speak of, then it would be finally confirmed that I have been shooting with junk lenses for all of these years, and I could rest easily knowing that the short comings apparent in my photos could be attributed to faulty equipment!
Best, Alan
Alan,
I agree, most are very good, but 40 MP are really a challenge. I agree also that there could be some sample variation, as suggested for the 45-85. But I tested 3 of these, and all were showing the same defects : good center sharpness, but asymmetry on sides and corners, and acceptable usability stopped down at F11.
But escluding the zooms, that must be stopped down, and the 45 2,8, all the other are
outstanding or at least very good.
I'll prepare a list, with my findings, at the end of tests.
Thank you for your kind words.
Sergio