Tilt!!! Interesting Resolution
More Power to Edmund...:)
I thought this chart was interesting. This image is a colorized version of a screenshot of a page of Edmund's online catalog.
Please note that I have intentionally colorized this chart to make it useless!! Please do not attempt to use it as a test chart because the original version is the copyrighted property of Edmund Scientific Company. Edmund is on the web, and you can purchase what you need directly from the company.
In the days of film cameras with detecting elements distributed randomly on the film medium, there were no tilted elements on charts like this one. Tilting becomes useful and even necessary due to the rectilinear photo detecting sensor array on a micro sensor chip. Things do not necessarily resolve the same along a pixel diameter as they do in the horizontal or vertical directions.
I should add that Fujifilm cameras used hexagonal pixels stacked in such a way as to somewhat reduce the need for such a chart.. One should still use an Edmund MTF chart to verify that. I don't know what Fuji's current focal planes look like. I have been meaning to buy a Fuji camera to check it out.
There are many other very useful specialized test charts by Edmund and other companies that you should check out to see what is best for your lens and camera calibration and adjustment needs.
Tilt!!! Interesting Resolution
More Power to Edmund...:)
I thought this chart was interesting. This image is a colorized version of a screenshot of a page of Edmund's online catalog.
Please note that I have intentionally colorized this chart to make it useless!! Please do not attempt to use it as a test chart because the original version is the copyrighted property of Edmund Scientific Company. Edmund is on the web, and you can purchase what you need directly from the company.
In the days of film cameras with detecting elements distributed randomly on the film medium, there were no tilted elements on charts like this one. Tilting becomes useful and even necessary due to the rectilinear photo detecting sensor array on a micro sensor chip. Things do not necessarily resolve the same along a pixel diameter as they do in the horizontal or vertical directions.
I should add that Fujifilm cameras used hexagonal pixels stacked in such a way as to somewhat reduce the need for such a chart.. One should still use an Edmund MTF chart to verify that. I don't know what Fuji's current focal planes look like. I have been meaning to buy a Fuji camera to check it out.
There are many other very useful specialized test charts by Edmund and other companies that you should check out to see what is best for your lens and camera calibration and adjustment needs.