Thanks Rob. I opened a different LR4 catalog on the PC that only has two photos in it and the problem didnotoccur. So it does seem to be an issue with catalogs that have a lot of raw Canon 5D Mark III images. The image "flickering/reloading" also occurs on the Mac Laptop running a different catalog but that one also has a ton of canon raw images. The PC catalog (the one with the problem) also resides on an EHD so I'm not sure if that is a factor, or not - the other one with only 2 photos total is on my hard drive.
I guess I could try to move the entire catalog to my HD (and raw images) and test again. If still a problem then it is either the size of the catalog or some setting in that catalog. Does NIK SW have a max size threshold recommended? I realize it converts the raw to an RGB format when it opens the image - the last image started as 25MB raw and ended up at 160MB after I added a few of your filters stacked and then did some touch ups in LR. Do your recommend any compression? I can set that as a preference for Color Efex in the External Editor settings?
Joan Sides
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