Can someone enlighten me as to the proper way to export images from Lightroom into photoshop to get the image to print indentically as it does in Lightroom? My images are printing very well out of lightroom but I am needing to use the canvas print module to select gallery wrap edge treatments using photoshop and my images are not coming out the same. Currently I am exporting as TIFF with no compression in ProPhoto color space and using the same relative colorimetric intent when printing as I did in Lightroom.
First, Zip or LZW Tiff compression is lossless and produce identical print bits.
Second, Photoshop and Lightroom are somewhat different internally. Photoshop uses, and exports to the printer driver RGB values in the image's working colorspace. Lightroom, when letting the printer manage color, always converts images to an internal representation, an altered form of ProPhoto with a gamma set at 1. This is also the space the RGB values are sent to the printer using "Printer Manages Color". It has the job of converting it to device space RGB values. Since printer drivers differ between models, OEMs, and maybe even versions, it's really not a good idea to depend on the printer driver doing any color management.
I get completely consistent (Better than .5 dE) results using Lightroom and Photoshop with my printers and custom profiles when letting the application manage color. And on one printer using Photoshop I get the same consistent color management letting the printer manage color and setting ICM driver settings to the desired paper/profile and input colorspace. But only in Photoshop. Lightroom mangles the color using identical settings in the driver. This is because that driver is seeing the Lightroom RGB values, which are in an altered form of ProPhoto RGB but is interpreting it as if in the standard, Gamma=1.8, ProPhoto colorspace.
So, the only configuration where I see identical, consistent results printing from Lightroom or Photoshop is letting those applications manage color. I always set the printer driver's color management "Off."