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Archive for the ‘Colour Management’ Category

Lightroom RGB Percentage vs Photoshop RGB numbers


Trying to get my Lightroom refined images as close as possible to Photoshop optimized versions, I discovered that the Lightroom RGB percentages do not match Photoshop RGB numbers.
Lately I have been finishing my underwater images in Photoshop, as Lightroom does not offer the amount of color correction control I waned.
However, reimporting my corrected images into [...]

Firefox Fixes Color Rendering Issue


Mozilla have fixed a problem with Firefox browser version 3.5.2 rendering ICC color profiles incorrectly that seem to happen on some particular monitors (e.g dell, nec) and monitors with wide gamut.

Initial Problem description.
Fix Details.

Firefox Color Management Changed


I just updated my Firefox browser to version 3.5, went to a favorite page on CNET that has a number of test images, and it appears Mozilla have changed the colour management capabilities on the version 3.5 Firefox browser.
Going to the browser configuration menu (see my previous post Firefox V3 Browser Colour Management), I notice [...]

New Safari 4 Browser Release – Color Management Error


Apple has released a new version of the Safari browser. I like to use the Safari browser for its colour management capabilities, but Safari 4 appears to have a error in how it handles ICC profiles.
I am traveling at the moment, so do not have the benefit of my large screen, but am running my [...]

Canon Powershot G10 Technical Problems


Browsing through the Canon Australia support website, there are a couple of technical problems with the Canon Powershot G10.
Magenta Cast in Raw Images
Canon has released a firmware upgrade to Version 1.0.2.0.
According to Canon this upgrade is to fix the following issue:-
If RAW images are captured by continuous shooting under the ISO 1600 setting, abnormal data [...]

Be Careful with Scanner Auto Settings


Using scanner auto settings can cause problems when scanning images. Turning off the auto settings, and using manual settings can make image correction easier and more accurate.
The Problem
I was recently scanning some images using my CanoscanFS4000US slide scanner (Canonscan FS4000US ICC profile).  After scanning the images and assigning the custom profile, a number of slides [...]

Canoscan FS4000US ICC Profile


I decided to get serious about profiling my Canoscan FS4000US slider scanner, due to having several years of slides from the period before my switch to digital.
My Canoscan FS4000US scanner is a couple of years old now (costing around $1500AUD when new), but provides high resolution images from slides and negatives.
For years I have wondered [...]

DNG converter and Profiles Update


G10 CR2 RAW format
I recently purchased the Canon Powershot G10 so I could shoot RAW from a compact platform, and take advantage of the extra bit depth.
I have been using Lightroom2.1 and CS3/Adobe Camera Raw (ACR) 4.5 for my processing workflow. Neither of these supported the G10 CR2 RAW format.
Note: – As I am writing [...]