a print in LR 6.0

[gellswl]

I upgraded to a 27" iMac with OS 10.11.4 from an older 24" iMac with 10.6.8  and from LR 3.4 to LR 6.0. I transferred an image to the new iMac and printed using the same custom made paper profile and the same printer (Epson R3000). The two prints are not identical. How can that be?

[pflower]

At a guess I would say the the old image under LR 3.4 might have been processed with 2003 under the Calibration Tab and when you upgraded to v6 this was changed to 2012.

[gellswl]

I am quite certain that this image, taken last month, was processed using the 2012 processing engine in LR 3.4.

[Simon Garrett]

I am quite certain that this image, taken last month, was processed using the 2012 processing engine in LR 3.4.

Given that Lightroom 3 doesn't have Process 2012 that might be quite tricky.  Lightroom 3 had the original Process 2003 and Process 2010, but Process 2012 appeared for the first time in Lightroom 4, AFAIK. 

[RikkFlohr]

Lightroom 3.x did not support PV 2012. You could have edited in 2003 or 2010 with Lightroom 3.  PV 2012 was released in Lightroom 4.0

LR 1-2: Process Version 2003
LR 3: Process Version 2010
LR 4-6: Process Version 2012

[gellswl]

Ah, yes, I was incorrect. I was thinking of the 2010 processing engine. So, all things being equal, the two prints could be not exactly the same because of the two different processing engines? The prints are very close yet the blue sky, in the new version, has a slight magenta look to it withing the cumulus clouds.

[Jeremy Roussak]

Ah, yes, I was incorrect. I was thinking of the 2010 processing engine. So, all things being equal, the two prints could be not exactly the same because of the two different processing engines? The prints are very close yet the blue sky, in the new version, has a slight magenta look to it withing the cumulus clouds.

You can revert to the "old" processing engine in newer versions of LR: Settings->Process menu.

Jeremy