-
1. Re: Problem with Lightroom and Infrared Photography
Brett N Jul 11, 2012 9:05 AM (in response to Matthew A Kraus)When you choose "Edit Original" LR send the file untouched or adulterated in anyway to Photoshop. If you use "Edit a copy..." LR renders a copy of the file with any adjustments (or even without adjustments) and sends to Photoshop. So if LR is having trouble processing your IR files, then when you use "Edit a copy..." you should expect to see the same.
Could you send me one of your files to test this with? Send it to bnemecek [AT] adobe [DOT] com.
-
2. Re: Problem with Lightroom and Infrared Photography
Matthew A Kraus Jul 11, 2012 12:48 PM (in response to Brett N)It seems that the 2 files that reach PS, "edit a copy" and "edit original" are different once they reach phtoshop. I am not making any LR changes, so I would have expected them to be the same, but they must not be because PS responds to them differently when I try channel mix adjustments. I will forward a file to you at the suggested address. This will be an 8 bit tif that was originally a CR fle that was brought into my computer as a tiff and then imported into LR and resized down so could email it
Thanks,
Matthew Kraus.
-
3. Re: Problem with Lightroom and Infrared Photography
Brett N Jul 11, 2012 2:58 PM (in response to Matthew A Kraus)Thank you for the file. I'll take a look and reply.
-
4. Re: Problem with Lightroom and Infrared Photography
Brett N Jul 12, 2012 12:55 PM (in response to Brett N)At first I noticed a difference, but then I realized the Edit Original was sending the file as 8-bit (because the file is 8-bit). But the Edit with Adjustments file was 16-bit (because the default settings are to do a 16-bit ProPhoto conversion when sending). Once I corrected my External Editor Preferences, I see two of the same file. So check your preferences to make sure a converted file is going to end up the same as the original.
Additionally, you mention using Channel Mixer to create a blue sky effect. Can you send me that preset so I can test further, right now I've hit a bit of a dead end (unless the above resolves things).
-
5. Re: Problem with Lightroom and Infrared Photography
Matthew A Kraus Jul 12, 2012 1:31 PM (in response to Brett N)Thanks so much for working on this.
I fear the behavior you noticed was just due to the fact I cheanged the
file from 16 bit to 8 bit so the size was smaller and I could easily email
it. When I open any of my regular 16 bit files, whether I send them to PS
as "edit original" or "edit copy with lightroom adjustments", they both end
up as 16 bit and as far as I can see, seem the same, though obviously they
are not.
I don't really have a preset, but I'll walk you through the process.
1. Choose Channel Mixer from the Adjustment Pannel
2. Make sure the output channel is red, change the red channel slider from
100% to 0% and increase the blue channel slider from 0% to 100%. You can
type in the values.
3. Change the output channel to blue. Increase the red channel from 0% to
100% and the blue channel from 100% to 0%.
This is supposed to change the sky from brown to blue and the foliage from
blue to yellow and is what happens when you use the "edit original"
option. When you use the "edit copy with lightroom adjustments", the sky
turns green and the foliage pink. So you get 2 different behaviors,
depending on which option you use to bring the image from LR to PS.
That's my question, why do you get 2 different behaviors?
Thanks,
Matthew Kraus
-
6. Re: Problem with Lightroom and Infrared Photography
Brett N Jul 12, 2012 3:22 PM (in response to Matthew A Kraus)I pushed your file through on my side and everything worked correctly.
Did you try this workflow with the same file you sent me (maybe the conversion to 8-bit made a difference)?
If it happens with this same file, can you send me the after copy of the file (Send the file from LR to PS using the "Edit with Adjustments", then save it in PS and send the copy to me)?
-
7. Re: Problem with Lightroom and Infrared Photography
Matthew A Kraus Jul 13, 2012 6:37 AM (in response to Brett N)Thanks again Brett. It doesn't sem to matter whether I do it in 8 bit or
16 bit, still get the same difference with the 2 edit in PS options. My
original unimported CR file is 11.4 MB, the DPP 16 bit file that was
converted to tif is 57.1 MB, the DPP 8 bit file converted to tif is 28.6 MB
and the file that I sent you was changed to 8 bit and resized down to 12.7
MB. I going to have trouble sending you full res files, so I am going to
work with the 8 bit 12.7 MB file that I originally sent you. If you'd like
me to work with a 16 bit or full res file, I'll be glad to, but you need to
tell me how to send them to you
The 12.7 8 bit file that I sent you shows the problem well and hopefully
should be good enough for demonstration purposes. I changed the LR
external editor preferences to edit in 8 bits so the "edit original" and
the "edit copy with lightroom adjustments" are both sent to PS in 8 bits.
After I make my PS channel swap changes I see the differences in the 2
files. I am going to attach the "after copy" of the "edit original"
version in this email and in a follow up email I will attach the "edit
copy with lightroom adjustments". You should be able to see the
differences in the 2.
THIS IS THE "EDIT ORIGINAL" VERSION
-
8. Re: Problem with Lightroom and Infrared Photography
Matthew A Kraus Jul 13, 2012 6:44 AM (in response to Brett N)THIS IS THE "Edit copy with lightroom adjustments" VERSION
-
9. Re: Problem with Lightroom and Infrared Photography
Brett N Jul 13, 2012 10:33 AM (in response to Matthew A Kraus)I don't need the full res file if the lower res version exhibits the same behavior for you. But the file you sent me doesn't have the same behavior as you are reporting on my side. I imported your file into LR and then sent it to PS using both the Edit Original and Edit with Adjustments options, and both behaved the same way when using Channel Mixer. What I want from you is to take the same file you sent me, send it from LR to PS with Edit with Adjustments on your side, save the file in PS without using Channel Mixer and send the file to me.
If you were trying to attach the file to this forum post, it didn't work. All I've got here is bolded text. Just email the file again.


