After I have now found often enough that my pictures were not always perfectly straight I ordered the Focusing Screen Ec-D. The installation and the exchange took place without any complications. As usual, was a good guide with included. The preference menu select the appropriate setting for the Focusing Screen Ec-D. Now makes this lens again more fun. Above all it is also much better to make his image classification based on the Focusing Screen Ec-D. Accordingly, it is also an excellent work easier.
