import LR

[Smirnoff_El_Smirnoff]

Hallo, alle bilder die ich importiere in LR wedern auf einmal sehr dunkel und sehr kontrast, und alle cataloge die ich früher gemacht habe, öffnen sich auch alle so, wie ein schlimmer dunkler preset, wer kann mir sagen was ist mit LR los? In der camera sehen sie normal belichtet aus.

[dj_paige]

Check the edit history, see if there is something in the history that doesn't look right, for example applying a preset you are not expecting to see.

Also, you might want to recalibrate your monitor.

[Ian Lyons]

Check that you haven't inadverently configured LrC to apply a Develop preset during import or set the application to use an alternative Raw Default rather than Adobe Default. For Adobe Default  your Raw Default should be configured as shown in below screenshot.

[GoldingD]

Import a fresh new photo. After import, bring up the Develop Module. Look at the sliders, especially in the general tab. Have any been moved from defaults? (only the slider down in sharpening should be altered, normally)

Also, the profile, anything odd?

This goes towards what was stated above about Develop or RAW defaults.