Epson Scan: how to use a custom scanner profile? (Windows 10)

I'm happy to report that Carpe PM's suggestion to this vexing problem worked for me. Creating a V2 scanner profile made the profile readily available to me in the ICM drop-down menu for the source profile after, of course, right clicking on the newly created profile and selecting "Install Profile."

Thank you, Carpe PM. - R

Carpe PM wrote:

I have an Epson v850 (running on Win10/64bit) that came bundled with X-Rite iProfile software. The included instructions indicated that Epson Scan only supports ICC Profile Version 2 and not to use other versions.

I tried to use a profile in ICC version 4 but it wouldn't recognize it. The ICC Version 2 works fine though Hope this helps.

I got the V850 Pro scanner with the Silverfast software and the i1 Scanner profiler from Xrite. I peoperly made the profiles using the targets supplied and then opened the reflective target file in Photoshop assigning it to the Xrite profile and printing it using my already profiled printer. Then I assigned the Epson profile and printed it, and finally I assigned no particular profile but my standard Adobe RGB default. Sadly, for all that effort, the default Adobe RGB profile worked better than the custom profiles so I'm not sure what all the fuss is about. Have I missed something?

robdestrube wrote:

I got the V850 Pro scanner with the Silverfast software and the i1 Scanner profiler from Xrite. I peoperly made the profiles using the targets supplied and then opened the reflective target file in Photoshop assigning it to the Xrite profile and printing it using my already profiled printer. Then I assigned the Epson profile and printed it, and finally I assigned no particular profile but my standard Adobe RGB default. Sadly, for all that effort, the default Adobe RGB profile worked better than the custom profiles so I'm not sure what all the fuss is about. Have I missed something?

Depends on what you are trying to achieve. I have a V850 as well and the default Adobe RGB scans are reasonably good. But they aren't a match.

If what you are trying to achieve is a visually "perfect match" then you have to ask match what? Matching something you scan to something appearing on a monitor is problematic at best. OTOH,, if you scan, for instance, a 4x6" photo then print it as a 4x6" print, how closely do you wish them to match under the same light? That's when you need to ICC profile the scanner. But even there it isn't simple. The profile needs to be made with the same technology as the photo you scan. The V850 has pretty large differences in how it scans certain colors, especially orange and blue/violet that were made with Kodak chemistry or inkjet (CYMK) dyes. I've seen differences of deltaE as large as 10. But if the scanner profile is made with the same technology as the scanned object I've reduced deltaE errors to under 1 on average. This is overkill for most casual scanning purposes but becomes important in certain uses like reproduction / archival.