QTR-Quadtone RIP

While it might take you a bit longer compared to starting with someone else's profile...may I recommend learning how to make profiles from scratch? It's a bit more difficult with a Mac, because you have to wrestle with the syntax of the file compared to the GUI in Win.

I make this recommendation for a couple of reasons..1) you'll learn a lot about QTR and making digital negatives in the process, and 2) everyone has a different way of building profiles, and what another user did may not make sense to you, even if it works.

Additionally, another user's light source, chemistry, development method, etc. make the profile essentially unique to that process (IMO), so you'll likely have to do a lot of tweaking anyway.

The simplest curve to make uses only PK ink, and from that you can get used to using the ink limiting and curve controls, as well as linearization. Then you can tackle gray partitioning when you add the LK and LLK inks.

Keep in mind that since multigrade B&W papers have some color sensitivity, be careful in applying colored inks...you'll have to carefully balance M and Y inks and apply them in tandem if you want to use them, otherwise you'll be activating different emulsions depending on where the M and Y inks get laid down, kind of like printing a C41 negative on B&W multigrade paper.

With all that being said, if you'd prefer to use someone else's profile as a starting point, I've got a couple of profiles for B&W paper that aren't totally fleshed-out (not linearized), but should get you started. Contact me off-list and I'll send them to you.

Good luck...

--Greg




--- In QuadtoneRIP@yahoogroups.com, "John" <jthacker@...> wrote:
>
> I'm just getting started and trying to find a source for QTR profiles used for creating digital negatives. In particular, I want to tackle silver gelatin first. Any assistance will be greatly appreciated.
>