« on: June 28, 2013, 06:59:02 AM »
+1 W -3 T. I did several tests, the results were somewhat inconsistent at the T end. The value varied from -5 to -2 and I settled at -3. What bout the aperture sharpness and AF consistency testing results? The sharpest aperture for mine was either 2.8 or near 5.0. Again, some inconsistent results were seen but it could be due to the lighting. I also tested the lens using a 36" x48" ISO12233 chart. Softer at 70 mm in corners. In real world shooting, the lens performed fine.