Dfx Video/Film in use
With your video clip on the time-line, select a filter category and double click the filter to apply to the selected clip or drag drop the filter directly onto the clip. The Effect Controls tab displays the parameters which can be customised to suit your required effect, but this is not a very visually way to work. The better option is to double click on the small Setup button which then launches the full Dfx interface.
Using the full interface you can adjust the various parameters in order to obtain the desired look. Simply click on a Preset thumbnail that suits your clip and the effect is instantly applied to the main window. Now tweak the parameters to make any final adjustments. Your settings can be saved as a new custom preset and will be added to the preset list for that filter, you can also mark a preset as a favourite.
Located above the main window is a set of icons, these include Zoom In & Out controls, Zoom to fit, Area select Zoom, Pan, Side by Side comparison (for video it is one above the other), Vertical and Horizontal split views – the split area can be user defined and a Before and After toggle button. Above the Presets are the Cancel and Done buttons, this will return you back to the host application.
A feature which is hidden from the default view is Variations. This is a grid of thumbnails displaying a series of variations on a selected parameter setting. To activate this just click on a parameter name, e.g Hue, Saturation, Contrast etc. Now a series of thumbnails appears under the Presets, you can customise this to show one to ten variations and define the Parameter spread. Oddly If you select two Parameters then I would have expected double the amount of thumbnails displayed, instead you are presented with, a (number) x (number) value eg. 10 x 10 = 100 thumbnails. This can be a lot of thumbnails to choose from. The variations panel can be docked on any edge of the interface.
The other hidden panel is the Histogram, this can be accessed via the View menu or by pressing the letter H on a keyboard. The histogram shows RGB plus white colours and is useful for some of the filters, but not all. I would have liked the option to see individual colours.