Bump in shady areas

[Vizoom]

Hello,

how can I improve the bump?
Tried with bump mask and normal mask, bump channel and corona normal shader:
The problem: In shady zones the bump effect is almost washed out...It looks really not natural, as it would be another material there :(.
Does corona-bump only work in directly illuminated areas?
Please look at the example attached.

Thanks!

[burnin]

See, if Texture Sampling set to None fits you better.

Another option would be to emphasize surface structure by slightly multiplying bump map in with diffuse...

[Vizoom]

Thanks burnin, I´ll try it!