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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 20 May 2013 (Monday) 20:57
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Workflow question-stacking multiple images (car trails)

 
SmokeySiFy
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May 20, 2013 20:57 |  #1

Hi, so I have this idea to process a series of car trails like you would star trails to get one long exposure. So I have the raw files and I can't decide how I need to process them. Should I batch process the files and then stack them? and then process again once it is stacked. Or should I stack and then process. Thoughts? I think it would likely be best to process first, but I'm not quite sure.


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SmokeySiFy
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May 21, 2013 02:18 |  #2

Ok, well I decided that it is probably best to do the main processing first and then stack the images. I think I might have gone a little overboard with the number of car trails I want to stack, just over 800 images.

I spent this evening figuring out how to setup an action to batch process the files using the 10c workflow and to also stack the images. One cool thing I discovered while playing around with the stacking of the car trails, if you set the blend mode to darken, you can essentially eliminate the cars from the road. Don't think this would work during the day, but it was kind of eerie to see the highway with no cars on it.

Gonna let the computer do the hard work tonight and see what I get in the morning. Wish me luck!


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PhotosGuy
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May 21, 2013 08:25 |  #3

I think it would likely be best to process first, but I'm not quite sure.

You're probably right. But since there are usually multiple ways to do similar things in PS, it would have been nice to see an image of the effect that you're trying to get, & that might have promoted some comments.


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SmokeySiFy
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May 21, 2013 08:48 |  #4

I don't know of an example of what i'm trying to do. I think one of the closest is the last pictures from http://www.thepolarrou​te.com …04/a-guide-to-startrails/ (external link) where the plane trails are seen over Chicago. I have more car trails in my photo as well. Also, I definetly could have benefited from a graduated ND filter to control the lights from the cars better.

I think I was just being lazy and didn't even know where to begin to batch process photos with a workflow that is quite complicated. I did it though, after losing a working action in the process due to a photoshop crash. I'll post the results if they are any good.

P.s.:I ran the action last night, but my computer fell asleep about 1/3 of the way through the files! I thought computers didn't sleep when doing heavy work. I looked at power settings today and couldn't find anything in win7 to prevent sleep when the computer was busy.


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Workflow question-stacking multiple images (car trails)
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