For the past few days I've been organizing my pics in lightroom. I'm still trying to figure out my workflow. I've been shooting a ton or raws lately and can't decide whether to save them as raws. Then only save a tiff if I end up tweaking them, then finally make a jpeg out of the tiff if I need one. So today I started to convert raws to tiffs. My raw files are around 6-8megs each. Where the converted tiffs are around 20 megs. How is this? I though a raw was an unprocessed jpeg. Why are the tiffs so much bigger?