I received a picture file from a friend who complained that she could not reduce it from a 14 mb 16-bit Prophoto RGB file, 1298x1699 pixels,
to a Jpeg of about 500kb. I downsampled the file to782x1024 pixels, 8-bits and sRGB, saved it as a Tiff, and then converted it to a Jpeg. Even with the quality slider at 0, the size of the Jpeg was over 1.5mb!
I gave the file to several knowledgeable friends who found the same dificulty. I suspect there is something wrong with the original Tiff (It is one layer, labeled "Background." I even tried duplicating layers and reflattening them, as well as trying to export a duplicate layer to its own file, but the problem persists.
1) Would somebody here like to play with the file and figure out why this is happening? and,
2) How could I attach the 14mb file on a LuLa post so people could give it a try?