I've been playing around with Lightroom and Nik / Topaz plugins and trying to understand the best workflow. As it stands now, I only make small adjustments to highlights, shadows and exposure and disable all other options in Lightroom. From there I go into DFine to adjust noise. Next step into Nik for presharpening. Roundtrip into Clarity/Color efex to enhance the color profile etc... Finally to output sharpener. With respect to adjusting the tonal curve, I know that Clarity and Color Efex adjust this more or less when you apply Clarity (topaz) or Tonal Contrast (color efex ). However lightroom also gives you a nice tone curve adjustment tool. Would I be better off sending a 'flat' file into Topaz / Nik or alternatively would it be better to adjust the tonal curve in LR before reducing the noise and before clarity in topaz? I'm thinking that I should be sending a flat tonal curve image into Nik/Topaz if I am going to be playing around with contrasts in these apps ? Right? Any advice is really appreciated. --Tom.