Author Topic: Two differences in measurement and reporting  (Read 2218 times)

Offline simont

  • Newbie
  • *
  • Posts: 3
Two differences in measurement and reporting
« on: February 18, 2012, 11:43:52 pm »
This a comment for this page on the website
My guess is that there are two major factors that can account for most of the difference:
1) DxO reports '35mm-equivalent' lp/mm numbers, which are 2 times smaller than the real lp/mm numbers, due to the smaller size of the 4/3 sensor.
2) DxO appears to compute the resolution figures from the individual raw R, G and B channels, whereas Lenstip uses a demosaiced image. It seems reasonable that the Lenstip numbers exceed those from DxOmark, because information from all channels is used simultaneously.