Thank you for your comments. @dfort, thanks for the tips, I already used mlv-app at post-processing but didn't manage remove that heavy moire. I think we should more care about dresses, as you said. @Tony, Pentax 50mm f1.4 is really sharp lens. I didn't use any sharpness filter in post-processing (only adobe camera raw's standart sharpness), used the lens all scenes at f/2.8. Also, my post process steps: "Mlv App" for convert mlv's to dng's, after effects (with camera raw) for editing, visionlog and colorista for color grading.