jt49

Nevertheless, you should not use 0 as your default. I must admit, the situation looks a bit confusing, and (following common sense) 0 would to be regarded as the standard value. But this is not the case. On the other hand, isn't -100 a fine number anyway jt

You should (in most cases) work with the default value of -100. I just compared the full screen view of a static image that I presented in PTE at values 0 and -100, and compared the results with IrfanView. At a value of 0 the image is slightly more soft. The slider sharper/smoother is to be used to control the process of mipmapping (anti-shimmering) in case of animations rather than to sharpen/blur static images. See here. jt

Another way: Settings > Preferences > Timeline > Tracks jt