2013-04-19, 12:54
Hi,
First I want to thank you Gunther for making this awsome piece of software. Keep up the good work.
I am about to purchase LRTimelapse and I am currently looking at a few scenarios that is typical for what I want to do.
Some days ago I ran into a problem that I have not yet been able to solve in a good way. I have searched the forums and web for a solution, but found nothing. That is the reason I am now posting here. My scenario is as follows:
I have a timelapse sequence shot at dusk using the "holy grail" method. I changed the shutter speed and ISO values during the shooting. The changes are quite small since I don't want to do large changes to exposure changes because this might affect image quality. So I have around 10 to 15 pairs of holy grail keyframes in my sequence.
So far so good. When I edit the keyframes in Lightroom I start by setting the exposure value for the first frame and work my way through the frames by CTRL+SHIFT+C/V and Match total exposure. When I reach the final keyframe I have a smooth transition over the whole sequence.
The last keyframe is obviously much darker than the first since I did not make any additional changes to the exposure of the holy grail keyframes. The fading of the sequence from start to finish is exactly as what actually was recorded by the camera and if I go back to LRTimelapse, make the auto transition and render the sequence in lightroom, it looks good.
However, now comes the problem. I don't want the sequence to be darker at the end. I want to gradually increase the exposure to compensate for the fading light. So basically what I want to do is to set the correct exposure to the last frame and make a linear transition from the first frame to the last. But this is not possible because then I have to remove the holy grail keyframes and the adjustments for the holy grail exposure jumps are lost.
I have looked at your tutorial and I can see that you solve this by gradually (manually) setting the exposure a little more to each holy grail keyframe. But this means you actually have to do this whole transition manually which I find does not give me good enough results.
What I basically want to do is to do a second pass exposure transition. I want to first take care of the holy grail keyframes, and after that be able to make changes to exposure that are nicely interpolated over the sequence. I have tried to do this by exporting as original or as DNG, but the exposure values are written to the file and if I apply an additional exposure transition with new keyframes, the compensation for the holy grail jumps are lost.
I don't want to export to jpeg because the changes to exposure to the last frame are quite large (2-3 steps) and jpeg would not be able to handle that.
Does anybody have a solution to this? Or am I missing something fundamental?
/jonas
First I want to thank you Gunther for making this awsome piece of software. Keep up the good work.
I am about to purchase LRTimelapse and I am currently looking at a few scenarios that is typical for what I want to do.
Some days ago I ran into a problem that I have not yet been able to solve in a good way. I have searched the forums and web for a solution, but found nothing. That is the reason I am now posting here. My scenario is as follows:
I have a timelapse sequence shot at dusk using the "holy grail" method. I changed the shutter speed and ISO values during the shooting. The changes are quite small since I don't want to do large changes to exposure changes because this might affect image quality. So I have around 10 to 15 pairs of holy grail keyframes in my sequence.
So far so good. When I edit the keyframes in Lightroom I start by setting the exposure value for the first frame and work my way through the frames by CTRL+SHIFT+C/V and Match total exposure. When I reach the final keyframe I have a smooth transition over the whole sequence.
The last keyframe is obviously much darker than the first since I did not make any additional changes to the exposure of the holy grail keyframes. The fading of the sequence from start to finish is exactly as what actually was recorded by the camera and if I go back to LRTimelapse, make the auto transition and render the sequence in lightroom, it looks good.
However, now comes the problem. I don't want the sequence to be darker at the end. I want to gradually increase the exposure to compensate for the fading light. So basically what I want to do is to set the correct exposure to the last frame and make a linear transition from the first frame to the last. But this is not possible because then I have to remove the holy grail keyframes and the adjustments for the holy grail exposure jumps are lost.
I have looked at your tutorial and I can see that you solve this by gradually (manually) setting the exposure a little more to each holy grail keyframe. But this means you actually have to do this whole transition manually which I find does not give me good enough results.
What I basically want to do is to do a second pass exposure transition. I want to first take care of the holy grail keyframes, and after that be able to make changes to exposure that are nicely interpolated over the sequence. I have tried to do this by exporting as original or as DNG, but the exposure values are written to the file and if I apply an additional exposure transition with new keyframes, the compensation for the holy grail jumps are lost.
I don't want to export to jpeg because the changes to exposure to the last frame are quite large (2-3 steps) and jpeg would not be able to handle that.
Does anybody have a solution to this? Or am I missing something fundamental?
/jonas