How Do I Simulate Brightness Adjustment When Using Direct Export?

[Keith Reavis]

I send files to a commercial printer for prints. They recommend a file with no interpolation as they have software that can up-rez better than LR so I use direct export and send a psd file with no changes to resolution,  sharpening, paper type, etc. How do I simulate the Brightness adjustment that is available in the Print module? Is there a corresponding value between say a +20 for Brightness and an exposure adjustment in the Develop module, or some other way to compensate?

[JRSmit]

How come you need to specify a brightness adjustment?
If for instance prints are too dark compared to your display, then your monitor is set too bright.

[Robert-Peter Westphal]

How come you need to specify a brightness adjustment?
If for instance prints are too dark compared to your display, then your monitor is set too bright.

Hello,

That's not always the case : When I print to Gold  Fibre silk or Canson Baryta with the canned profiles, everything comes right and the brightness slider stays at it's default position. But when I print to Epson glossy paper, also using the canned profiles that come from Epson, the print is much to dark and I have to move the brightness slider way up.

My monitor is calibrated to 100cd / m^2, my printer is an EPSON R2400 using Epson original inks.

Robert

[Simon Garrett]

Yes, I'd also wonder why you want a brightness adjustment.  If it's because images look different on a monitor when exported or when uploaded to the web, then there's something wrong with colour management on your computer.  

If it's when they're printed, check monitor brightness, or if you still need a little tweaking when printed then my advice: do it in the print program (e.g. in the print module in LR), not when you export.  

[Keith Reavis]

Printing on different papers (which sometimes means different print services depending on desired paper) gives me the different brightness levels on prints. Using the Print module is fine for some papers but I'm limited to JPG. When needing to send a PSD I have to go through export. I'm trying to find a way to compensate that once learned I can generally apply across the board. One setting for JPG's exported from the Print module, a different setting for PSD's from direct export. A smooth cotton rag is pretty close to spot on with my monitir, but a luster or gloss is too dark. Haven't even printed on canvas yet so that may be another settting.

[digitaldog]

How do I simulate the Brightness adjustment that is available in the Print module?

You ignore that and calibrate the display properly in the first place to match the print. The LR kludge is the opposite approach and silly IMHO; alter the data to produce a print that doesn't match the calibrated display.

http://www.luminous-landscape.com/tutorials/why_are_my_prints_too_dark.shtml