Hello all,
Ich have got some experience about shooting technics during the last months, but i am quite new to lrtimelapse and lightrooom.

I want to do a video from sun (setting sun in the view) to stars. Concerning hardware I use a Panasonic G1 or GH1 with a Nocton 25 mm 0.95 and Heliopan Filters ND3 (1000x), maybe also ND2 (100x) + UV/IR-Filter ES52 . Shooting mode will be aperture priority, white balance set to sunlight. Around sunset time I will remove the ND-Filter and later on gradually open the aperture (manually). Feel free to try it;-)

My problem is:
Strong ND-filters produce a change in colour temperature, unfortunately even the UV/IR-filter cannot totally prevent that. Thus I get a distinct difference in look when removing the ND3-Filter (especially colour temperature and contrast I think, brightness is the smallest problem due to automatic selection of exposure time).

I have tried to compensate the colour/contrast - change in lightroom using the controllers for exposure, colour temperature and graduation curve, but so far I came somewhat close but by far not close enough to make that transistion invisible.

What to do now to make the first non-filter pic look same as the last filter pic? Any automatic tool in lightroom? Try harder to find the settings by myself? Or just impossible?

Thx for help!

It shold be possible. Try using WB and the HSL sliders. Make sure to set keyframes as explained in the "holy grail"-tutorial on the adjacent images to not destroy the changes, when you make transitions.
To get a close match between the images try to avoid "non-linear" develop parameters as explained here: http://forum.lrtimelapse.com/Thread-i-m-...ent-images

Thx for the info Gunther,
In between i came very close by using the sliders for exposure, wb and tone curve. Thats 7 sliders all together, a really hard job, but some more time and it might work. For sure i will minimize the amount of such transitions.

In between, for getting some faster results, i shoot in manual mode also :-)