Was referred to your site by a long-time Bangkok fan.
Really good. I'll hop on every week.

But - what is "bokeh" - It's not in the Merriam-Webster on line dictionary, and needless to say I've never heard it used before, nor have i read it anywhere but in your column.
hanks again for your wonderful instructions.
Best Wishes Always,  -

Allen T


Allen  -

First, thank you for reading my column.  I try to make it fun and interesting to a variety of skill levels so if you don't see anything of interest one week, perhaps you will the next.

Bokeh is a Japanese term referring to the quality of the defocused area of an image.  It is now in common usage in the English language with virtually everything photographic.  Any defocused area is called 'bokeh', and the quality of the bokeh is a subjective evaluation.  Ideally if you zoom in on the defocused area of an image, the perfect bokeh character will be as rounded as possible.  This gives a smooth and creamy appearance vs. a rough appearance.

You can find it in:

I hope this helps.



Steve -


well i bought another display (sorry to say but it was a 24" mac as I like them.

I also bough a eye-one to calibrate them, but I think they look different colors on both screens.

My question is should i be using the same profile for both displays or calibrating both monitors individually.???

Ive tried both options and they still look different to my eyes, maybe ive got bad eyes , but the wife confirms it different.


I got the 14-24 2.8 and the 24-70 2.8  very nice , just no time to play yet!!!




Hi Paul -

Let me get this right.  You have your 24 inch IMac and now have added a 24 inch external Mac monitor?

This goes to what we talked about before, because your Imac only has one GPU (graphic processing unit) it will only have one LUT (look up table), which means it can only hold one color profile.

Because it can only hold one color profile, this profile will be what's used on both monitors.  However, it will only show the right colors on the monitor you calibrated with the Eye One 2.

To answer your question, pick the monitor you want to be color accurate and profile it.  When completed, it will be properly profiled (provided you did it correctly) and the monitor you didn't profile will look off.. because it will also be using this color profile you made that is suitable only for the monitor you profiled.

So now your question is.. how do you get both monitors properly profiled on your IMac?  You cannot.  The IMac doesn't have the capability.  It only has one GPU therefore only one LUT.

If you want to use a Mac with two monitors which are profiled, you'll need to upgrade from the Imac.. and Mac makes an awesome model called the Mac Pro..  You can order this with two video cards or a dual video card with two GPU's.  Either way it will work for what you want.

Keep in mind that the Mac Pro is a high end unit and most are using it with high-end monitors (not Apple/Mac monitors).

I've ordered two NEC 24" monitors to mount in my dual display stand.. here in Thailand the  only place that sells NEC's requires a 30-45 day waiting to get the better models in.  So I wait.

Hope all is well with you in Germany!





well with new mac os i can run 2 and have 2 displays with 2 profiles see below.

So thats odd.



Paul -

Windows XP was the first to come out with a software workaround, they called it the Color Applet and it's still available on their site.  Then Vista came out with an integrated color manager that looks almost identical to your Mac OS.. and there was no need for the Applet any more.

What this does is assign a color profile to 'available' hardware LUT's, and in the best of cases when everything is working right lets you switch back and forth from one monitor to the other with a single LUT constantly updating the table as you do.. but it rarely works right.

What it doesn't do is allow you to display two different color profiles to two different monitors at the same time without two hardware LUT's.

So your question is now.. "Why is this option active in the OS when it's not supported by hardware?"  Good question.  It's because some of the top end monitors have built in hardware LUT's.  The Eizo's and very expensive top end monitors, if you look at the specs carefully will have their own hardware LUT.  Frankly I'm not that up on these as I've never used them personally, I've only read about them.

By far the most common way to solve this issue is to have two graphic cards which gives you two CPU's and two LUT's.. profile you're monitors in Eye One 2, and then make sure those profiles are assigned in the OS part that you're looking at now.

Btw -  This is probably the most difficult to understand/manage aspect of digital photography.  Everyone wants it to work (two monitors with two separate profiles) with only one graphics card.. but it won't..

I hope this helps.


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