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Author   Topic : "Snow Leopard"
Ian Jones

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Joined: 01 Oct 2001
Posts: 1114
Location: Brisbane, QLD, Australia.

PostPosted: Fri Aug 28, 2009 8:02 am     Reply with quote
No, this is not another thread just to tell you something you already know...

What I'm curious about is this change in Snow Leopard.

Gamma 2.2.

The default gamma has been changed from 1.8 to 2.2 to better serve the color needs of digital content producers and consumers.

I always find colour management tedious and a bit confusing, so am wondering if anyone can think of any new problems this may introduce? any particular benefits?
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Joined: 24 Feb 2009
Posts: 97

PostPosted: Sun Aug 30, 2009 10:55 am     Reply with quote
Ah man colour management and profiles drive me nuts, i have spent ages trying to understand it all but to be honest i still dont really get it, especially profiles saved with images.

I "think" if you save an image on a mac with 1.8 gamma and include an icc profie with it then when you open it on a pc with 2.2 gamma and an application that can read colour profiles (like photoshop) the profile will compensate for the gamma shift and it will display fine. If you choose not to save the image with the icc profile, or open it in windows with something like internet explorer or firefox(which cant by default even read icc profiles) the image will show up darker than intended. If your on a mac you can see what the image is going to look like on windows machines by cycling through the proof settings in photoshop and seeing how the image reacts.

The benifits of changing to 2.2 gamma is that your images made on macs will display the same on pcs, and often with digital images its not how they look on your monitor but on everyone elses. Also the colour calibraters tend to suggest 2.2 gamma at 6500 white point, and they know a lot more about this than i do. This is all assuming the viewer wont be able to use the icc profile,ie the vast majority of people seeing your images.

But yeah by far the most irritating thing about all this digital color bullshit, is when you spend hours finessing your colours in photoshop then save it as a jpeg, and it gets washed out. The only way around this ive found is just before saving it out for posting, making a gamma adjustment by adding an exposure adjustment layer then adjusting the gamma setting on it a bit darker, so when it saves and washes it out a bit the jpeg matches exactly with whats in photoshop.

The more i think about this the more i get confused by it all, my brain cant really cope with the technical explanations on the net so i dont really know or understand what im talking about, just what seems to work.
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junior member

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Joined: 30 Jan 2008
Posts: 15

PostPosted: Sat Oct 24, 2009 1:07 pm     Reply with quote
What it 'means', is that Mac has the tendency to screw up all of my carefully brushed grunge compositions made on PC Photoshop, by adding a ridicu-humongous amount of contrast and making the entire thing look like it's been set on fire Shocked

I have a Macbook running slow leopard and a standard CRT PC, and I often juggle designs between the two so as you see, this is a problem for me

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