JonO wrote:
> Hi Dave,
>
> I assume you're doing it manually, rather than Fred Miranda's
> plug-in? I wonder if you could build an action that would automate
> the process. I should also say that I have both Mac and PC, but
> would like to do this on a Mac, because I get better printer/screen
> calibration results.
>
>
>
> Dave Luttmann wrote:
> >
> > JonO wrote:
> > > I'm now investigating options for upsizing images... from Fred
> > > Miranda's stair-stepping plugin to S-Spline and Genuine Fractals...
> > > I do it manually now, using incremental upsizing with Photoshop 7.
> > >
> > > I'd be interested in hearing what people think of the various tools
> > > and others I may have missed.
> > >
> > > JonO.
> >
> > I've had the chance to play with Genuine Fractals, Q-Image,
> > S-Spline, PS 7 stair stepping in Bicubic, Lanczos, Bell, Mitchell,
> > etc, etc, etc. On the 16x20s & 20x30s I've had done, there is
> > little to no difference. I find the bicubic stairstepping in PS7
> > quite often provides slightly better rez @ 100% on screen....but in
> > the print, there is no difference. I've put aside all the other
> > upsampling tools I used to use and have stuck with stair stepping
> > in PS7.
> >
> > Dave
> >
>
JonO - I agree with Dave. I tried several upsize options and settled on writing my own action based on bicubic SI in 10% steps for PS 7.

Two things to note, as a first step in the action make sure you do a PURGE so that there are no memory/time problems.

Second, alternate the steps by first the long side then the short side. This seems to give a smoother transition. i allways run noise reduction on my images before using the action.