enjoyyourcamera (not your test chart)

After studying the manual, the most careful construction (together about 2 hours) is obtained as a result of a 100 mm f 2.8 lens and a Canon 5D II: The right fine double lines are not resolved and left are not enough of the length. Evaluation almost impossible! In addition, there are huge ranges of variation that are not traceable to such a ruler or real objects. My guess: The slightly shiny surface of the panel irritates the autofocus of the camera. Conclusion: Suitable interesting wall decoration - otherwise completely useless for my setup !!!