優點:
1. Carl Zess good len have not so bad quality.
2.Len have quite large apterture.
缺點:
1, Bad AF system, take focus, after the len must move toward & forward a time, so can caught the focus point, if the focus subject move , after the len focus, the subject will go away, slow speed.
2.Must use the high quality 5million pixels, when used medium to take photo to photomax output 4R, have very bad quality like 1-2 million pixels camera.
3. Expensive price.