You tell Vuescan to save raw files instead of TIFF or JPEG. Then you can reprocess them any way you like without having to run the media through the scanner again. You can even take them directly into Lightroom or Photoshop and process them completely independently of VueScan as they are simply 16bit, linear gamma TIFF files.
The workflow is up to you to define, but Sascha Steinhoff delineates it nicely in "The VueScan Bible": https://dl.dropboxusercontent.com/u/25268645/VueScan-Raw_Workflow.jpg It's a worthwhile book to have around if you want to learn, understand, and use VueScan. I have it in the Kindle edition so it's on my desktop, iPhone and iPad for easy access whenever I need to figure something out. G On Oct 26, 2013, at 4:01 AM, Paul Stenquist <[email protected]> wrote: > Sounds like a lot of work. I can't fault the scans i get from Epson Scan even > with pixel peeping scrutiny. But I ill attempt this as an experiment. In > brief, you're saying you do a flat scan in Vuescan then use Vuescan tools to > correct it? Where in Vuescan do you choose "raw workflow?"" > On Oct 25, 2013, at 9:08 PM, steve harley <[email protected]> wrote: > >> on 2013-10-25 12:17 Paul Stenquist wrote >>> With the Epson V500, there was little fine control of the various >>> functions. For example, when trying to set black point movement of the >>> control would provide almost no discernible difference, but when the >>> control was pushed to a certain point, the whole thing would fall off the >>> cliff and a drastic change would be generated. Same thing with low and high >>> curves. Plus after tweaking the preview, the resulting scan wouldn't match. >> >> tip: tweaking the preview is not especially accurate; instead i would >> suggust using Vuescan's "raw" workflow; this gathers the the "uncorrected" >> data from the scanner, essentially a 16-bit TIFF with flat gamma curve; this >> data can then be interactively reprocessed in VueScan to optimize the >> parameters without the need to rescan the source (saving a lot of time); if >> you are doing a batch, the optimized parameters can then be saved as a >> preset and automated >> >> or you can save the raw data as TIFF (or DNG, but not much point in that) >> and use Lightroom or whatever to do (and/or automate) your adjustments >> >> Epson's drivers may now be okay, but my history (going back to early 90s) is >> to distrust the proprietary drivers that are provided through (not by) >> Apple; too often they have added unwanted background processes or even >> caused system-wide problems; last i tried were Canon's mid-2000s drivers, >> which had nasty USB side-effects and i removed them quickly -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
