Lossless compressed still keeps everything the camera recorded, it just stores it using a more efficient format. Instead of 75MB, it "only" uses ~41MB. Decompression during processing gets the original 75MB back exactly as it was originally.
Gary in SE Michigan, USA. Nikonians membership - My most important photographic investment, after the camera. D4, D810, D300 (720nm IR conversion), D90, F6, FM3a (black), FM2n (chrome) YashicaMat 124, Graflex Speed Graphic 4x5 My Nikonians Gallery & Our Chapter Gallery