Hi Jan!
That's already been requested and it is listed in the feature request documentation. Thanks for mention it again.
Mistika currently only saves stills in dpx because it's supposed to be the best way to deliver images so they contain all the grading information without compression.
As Yoav mentioned, there are a couple ways you could transform your stills images into jpsg:
- With a Watchfolder, that you may even connect to a mail or a delivery service available in Workflows.
- With render presets in Boutique, and quickly setting the in and out points only covering one frame for the render.
Maybe other users come up with even better ideas to perform this operation.
Cheers,
Cristóbal