09-03-2015, 11:19 PM
Honestly, I think field curvature is the biggest issue regarding the transformation of the chart results to the real world.
I once did a ultra-wide test with the chart portions plugged to a wall - must have been 4x2.5m (15ft diameter) or something - and the difference compared to the chart results was marginal. Now this will not be the case across all lenses, of course. Some have better focus correction than others. However, if a lens performs weaker on a smaller chart, there's a message here anyway.
I once did a ultra-wide test with the chart portions plugged to a wall - must have been 4x2.5m (15ft diameter) or something - and the difference compared to the chart results was marginal. Now this will not be the case across all lenses, of course. Some have better focus correction than others. However, if a lens performs weaker on a smaller chart, there's a message here anyway.