I was curious if Gradation was changing the tone curve of the jpg, and so applying some special Olympus recipe. Or whether it was just changing the exposure triangle to make an image high or low key, and so its results were no different than if you had decided to expose with more or less light yourself (e.g. increase or decrease the shutter speed). From some reading online, it appears to be the former, is that correct? For jpg shooters (or Raw + Jpg like me, who likes to use the Jpg for most cases but have the Raw as a backup for working on the best images), it would seem fairly important to utilize the Gradation setting and know it well. Yet I have hardly used it at all. Everyone seems to agree that leaving it on Normal is best for general shooting, particularly normal outdoor light. But are people changing it when they want a certain look, or is everyone ignoring it? It seems like changing it would make the output a bit of a lottery, unless you were well experienced with it. But if you wanted, say, a low key image as part of street shooting, it is best to play with the Gradation, or just leave it on Normal and expose low key yourself using perhaps spot metering or exposure compensation? It also seems you can't change Gradation later in camera when making jpg's from Raws, is that correct? It would be useful if you could. I don't know why Olympus lets you change some variables but not others when editing Raw images in camera. Thanks for your input.