Weird Colours on a fully Profiled System

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Paul-H

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Hi all

I am looking for some help or a few pointers regarding a weird colour management problem I am having.

My system is profiled, both the Monitor and the Printer and images taken on my Digital Camera print exactly as they look on the screen as you would expect.

Even Colour Slides that where scanned on my Profiled film scanner also print exactly as they look on the screen.

So what's the problem then I hear you all shouting!!!!

The problem is the printing of scans of colour negatives, and although they look correct on the screen after conversion to positive from the negative scans the prints are just miles out, with colours to deep and overall far too dark

Why is my profiling working with digital images and colour slide scans but miles out with images that originated as colour negatives.

This is driving me nuts at the moment as I have a load that need printing and I just cannot get the results I should without constant adjustment and constant reprinting.

Anyone got any idea as to what I am doing wrong here.

Thanks for any help

Paul
 
Paul

A few questions

What app are you printing from
What printer
Do you know what brightness level your monitor is calibrated to

I'm not surprised you have problems with colour negs ( been there). Whilst most slide materials use similar dyes, and scanners tend to be calibrated for reversal, or print material, negs give them a real hard time. The orange mask doesn't help. When I used to scan negs, we had a Kodak HR500 scanner which had specific neg profiles available, and software that could use them. I suspect your scanner may not have this facility. On option maybe to use something like Silver Fast Neg Fix. It's a bit of software that post corrects colour neg scans. Don't know how good it is as I've never used it here's a link anyway http://www.silverfast.com/highlights/negafix/en.html
 
If the neg scans look right on your display just as the slide scans do which print ok, it'd seem that you've done the scans alright. That suggests something further on in the workflow? What colour spaces are involved, and what dialogues are being used between display and printer?
 
Hi guys

I am printing from Photoshop CC

My Printer is an Epson 1500W

The monitor brightness is set to 90.

Colour Space is set to Adobe 1998

Photoshop set to Photoshop Manages Colour and the Printer profile is selected there, Printer is set to Colour Management Off

All settings are the same for Digital Images, Colour Slide Scans and Colour negative Scans, everything is set the same, just cannot figure out what is going wrong with the Negative Scanned Images, as far as I can see I am doing it correctly, but I must be missing something.

The System is Profiled with Spyder4 devices for Monitor and Printer. I have tried profiles produced with Profile Prism as well and get the same results. I don't have access to any other form of hardware calibration option.

Paul
 
Is it possible that your workflow is somehow assigning a different colour space to the negative scans?

Here's a thought experiment. You could try it for real if you like.

Select two images, image A from a slide scan and image B from a negative scan, which look equally good on screen.

1. Open (a copy of) image A in PS, double the size of the canvas, paste a copy of image B alongside it. Save. Print.

2. Open (a copy of) image B in PS, double the size of the canvas, paste a copy of image A alongside it. Save. Print.

3. Use LR to print images A and B alongside one another on the same page.

What happens?
 
Last edited:
Right had a chance to try the printing options and the mystery deepens.

Print one of slide scan with negative scan attached printed fine

Print two of Negative scan with slide scan attached also printed fine.

re print of negative scan ensuring all the settings where the same was dark with a lack of correct colour.

this is now driving me nuts :(

Paul
 
It must be something to do with the colour space, surely.
 
What happens if you paste the neg onto the slide and print without changing the size? Something has to be changing somewhere.
Did you flatten before printing or print as a PSD?
 
Hi

Yes embedded profile is the same in both images, Adobe1998.

I wonder if it has something to do with the way I resize for printing, I just use the scaling function in the print driver to resize, although that has no ill effect on the digital Images or the Slide Scans.

My slide scans are 35mm slides scanned at 7200DPI 48bit 6720x10224 and around 400mb each

My neg scans are 6x6 scanned at 4800DPI 48bit 10330x10330 and around 600mb each

Should I resize in Photoshop/lightroom first.

Also I see most sites recommend that rendering intent should be a perceptual with black point turned off but Datacolor recomend that rendering intent should be Saturation with black point turned off would this make any difference. Although if its fine for digital images and slide scans I can see it being the problem.

Paul
 
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