Tue, 03 Apr 2012 21:43:16 +0200 "Andreas F.X. Siegert" wrote: > > > Or you could apply about a full stop's worth of positive exposure > > compensation during raw processing of your target shot and reprofile. > > Or reshoot the target so it doesn't need so much positive exposure > > compensation. > > There is no way to generate an image that will be bright enough after > the switch to linear. The drop is just too radical. > May be there is the problem with RAW -> linear TIFF conversion as Graeme have mentioned? You can do simple test: just shot a bulb or bright white object in daylight with defocusing and with overexposure for 3-4 stops. Then convert RAW into linear TIFF with Your workflow. Check the resulting TIFF. The saturated areas definitely should have 100% level in all three channel. If they have much less level, there is a problem in the RAW converter with camera sensor saturation levels. RAW channel values at fully saturated sensor area should become above 100% level in resulting TIFF. The saturation point shouldn't be within 0..100% of linear TIFF scale. It should be slightly higher than 100%. Otherwise You'll get huge color casts on saturated areas of images because of linearity loss in "linear TIFF" data.