Some improvements in the latest version 4.0 of Lightroom

The auto level is much better than before with the camera calibration process in 2012, although such a thing as an evaluative metering like modern cameras would not be bad, because if the subject is rather bright or rather dark, is not the original exposure by automatic (as before) ever not. Otherwise, I am very satisfied with the settings made (contrast, highlights, shadows, white, black). Also, the regulator for the clarity brings now a lot more. The adjustment of the correction brush are also very practical.

What is very disturbing is in version LR 4.0 (here on MacPro 3.1 with 10GB RAM), the time delay in displaying the white balance if you at a Canon RAW file is set to "Temp." or "toning" changed. After increasing the cache in the preferences from 1 GB to 2 GB or 3 GB, the delay does not change during playback of approximately 1.5 seconds.

Addition to LR 4.0: not just displaying the changed setting is when adjusting the white balance slowly, but with various changes to the image. Even the RAW export to JPG is much slower than under LR. 3