Thorsten Overgaard

"You had me at Hello..."
February 15, 2008 6:34 PM  (go back to main view)
I see colors ... and I see luminance 145 cd/m2

[I might add photos later when the Uber.com tech guys get it to work again]

Until few days ago I had my good old 20" Mac that was my stable color screen. Whatever happened on laptops and other computers, I could always trust the colors on that screen.
But I changed all my computers within the last two weeks and found that the manual adjusting one could do in Apple Control Panels did no longer result in the right colors. Laptops has long been too yellow in color, but now all the screens with Mac OS 10.5 was simply far off. Too blue, too red and too closed in the shadows.

So I got me a Pantone GreytagMacbeth Eye-One Display II screen calibrator. That's such an eye device you suck onto your screen and then software runs a series of tests and colors to determine what the right color profile is for your screen and computer.

It's like a walk in the park and suddenly I see colors. I see colors! It is such a relief to KNOW that the colors you are watching are correct and standard set. You can actually adjust what you see towards what you want it to look like, knowing that it’s the actual picture and not your screen, you’re adjusting.

I've been accustomed to adjusting colors on laptops knowing the extra yellow in the photos were not real but just a screen thing on Mac laptops.

Another thing that has been bugging me is that screens (and traffic lights and car lights and other light signals) has become increasingly bright in the last 10-20 years. It's like someone has determined that we become less and less able to see, why they have simply turned it up. More brake lights on cars, and brighter too.

Where will it end? One big red glowing car?

That has been hurting my eyes too. Yet, when you get used to strong light from screens, you tend to want it that way. If you turn it down, you feel like it's too dark or you are missing something.

Personally, I have that experienced that annoying thing lately that my eyesight is worsening. It’s when I’m reading; I can’t read those ingredients on chewing gum easily anymore. My eyes literarily hurt from it and the letters on the paper jumps. So I stay away from chewing gum, fearing it might be a conspiracy, but for sure knowing there’s way too many E-numbers in it anyways ;-)

I got told it's perfectly normal around my age that this happens, but I kind of disagree because I feel there are numerous reasons that contribute to this: When I shoot a lot and look through the viewfinder, it makes my eyesight worsening in the hours after. If I get too little sleep, that worsens my eyesight too. If I read a good book too throughout an evening, that too worsens my eyesight.

But taking B1 vitamins improve it (as B1 is also known for improving night sight if anyone of you have trouble with that).

Very bright screens helps you read, but do they also hurt your eyes in a way so that you will need more and more light, and eventually screen/reading glasses?

I often wonder if those very bright screens are in reality ruining my sight. I did fine with the old screens that seem dark and dim now…

Anyhow, this miracle device, my Pantone Eye-One turns out to recommend my LCD screens' luminance to 140 cd/m2.

In reality that means that an iMac screen, like those the new ones has, has to be turned down to 6 clicks (the damn thing goes from 0 to 16 clicks where 16 is full brightness).

But only 6 clicks feel great for working with pictures and stuff. Either in the evening but also in daylight. I have very big windows (and a great view) which I have to use blinds on to reduce the light and reflections. You can't work with computer screens in sunlight. Just not.

So 6 clicis it is. That is 145 cd/m2 luminence which is 5 above the recommended 140 cd/m2.

When reading the text on web pages somehow the letters look too grayish, like watermarks somehow, so I might turn up to 7 or 8 clicks when reading texts as that increases the contrast.

On my non-LCD screen (I have a LaCie on another machine to run my scanner) I had to turn brightness down to 0 (zero) to reach the recommended luminance of 100 cd/m2 for taht type of non-LCD screens. It was on 56 before which didn't seem that bright compared to the new LCD's but somehow felt wrong. Now it feels just right.

From 56 down to 0. I would never have guessed had I not had this miracle device that can measure the actual luminance cd/m2.

My laptop also got a fine tune. The right luminance on a laptop LCD is 90 cd/m2 which in a MacBook is 9 clicks out of 16.

9 Clicks is about luminance 96 cd/m2 whereas 16 clicks is 185 cd/m2. No wonder my eyes has been hurting so much. I really really really can't figure out why I haven't spotted before that viewing a movie on my laptop, lighting up the screen 100% with 16 clicks was an over-exposure.

DVD's look awesome at 96 cd/m2 and washed-out at 185.

Luminance is not just theory. It's standards set by the ISO (International Standardization Organization) as to how you work best and most safe. They somehow knew all along that 185 cd/m2 would ruin my day. Now I know too.

Also, actually, ISO has set standards for color temperature and the amount of light in your workspace for different types of work. The little miracle instrument Eye-One can actually measure the light in the room too, both color and amount and tell if it's within range or not (it actually gives you the exact amount and temperature).

Besides safety and health, color temperature in the room also influence your sight; how you can judge colors on the screen as your eyes adjust any temperature of light towards daylight. So warm yellow light make your eyes fetch the internal blue filter - and what does that do you your eyesight. It of course makes you see colder colors on your monitor. - To some degree (as the eyes adjust incredible fast).

Color temperature is "Kelvin" or "K," named after Mr. Kelvin of UK who discovered that light had temperature, hence a color. Cold light is blue, hot is red, daylight (6500 K) is white.

Colors, color temperature, gamma and luminance are tricky things. Because you easily get used to wrong colors. Your screen may seem too yellow, too warm, but after 5 or 10 minutes you have adjusted to thinking the colors and the world look like that.

You don't notice anymore.

So that brings us back to the big headache: What is the right colors then? Because you can’t judge them anymore, given all the bad adjustments, wrong luminance, etc…

Gamma on Mac is, by default, that means when you get the machine, gamme1.8. But PC's are by default gamma 2.2.

Gamma is some radiation-mathematic stuff. What a word to use. In real life the difference between gamma setting 1.8 and 2.2 is like changing the light bulbs from 60W to 40W. That is the definition we'll stick to here.

That mans that when you adjust a photo on your Mac with your 60W light bulb and you think that it looks pretty damn cool now and then post it, the PC-users with their 40W light bulb will tell you that you are one lousy photographer because your photos are too dark.

Which is true, looking at their screen.

Television screns are even darker, so if you work with video on your screen and want it to look good on a telvision, you must use Gamma 2.5. But that's a different story.

So a pro screen should always be set at gamma 2.2. Even a non-pro scren because you look at so many photos throughout a day on your screen. And all of them are most likely made for gamma 2.2 viewing. Don't know why Apple thinks otherwise. Also my Pantone Eye-One sets it to 2.2, of course.

Anyhow, I thought you should know. There's a lot of theory and science behind color management, but in reality all you need to is to buy a Pantone Huey Pro for 100$ or so, or the 'expensive' one I got for 180$ ( in UK about 200 Pounds) and run it. Really, don't speculate about all that underlying technology and philosophy.

What you get is certainty that your colors smoke and are right on.

I’m so delighted about colors. I really am.

You know this feeling, you listen to a piece of music and it’s almost like an old friend. It’s so true and right in some sense it just feels like it was always there, always meant to be. And now someone put it onto a record.

Or listening to some well set-up hi-fi equipment where you can hear what coffee the sound technician are drinking and when a bicycle goes down the street outside the studio. There’s some recognition of true sound, true tones, the exactness of how it really is.

Leica glass is the hi-fi of the photo world, the glasses that always gets all the details and tones correct. Even many think it’s a matter of sharpnes, it’s not. It’s the correctness with which it dublicate things. Clarity, tones, temperature, all.

Yummy!

Same with colors. Looking at correct, well tempered, correctly lid colors and correct contrast is like heaven.

[Anything else? Yes, get plenty of RAM. Stuff all you can into your computer, it’s low prices these days for RAM and RAM is the most effective piece of gear to speed up your old or new computer. Runs like butter with lots of RAM.]

I
n few days I'll report from Copenhagen Fashion Week, the autumn and winther collection that was presented few days ago. Princess Mary, naked men and all. Stay tuned for that...

Gentlemen Takes Polaroids
Blog Comments (13)
Posted by devika on February 18, 2008 12:47 PM
wow that was an incredible blog. due to not having a mac, i didn't realise that things like that could even happen. although i do agree with you about the traffic lights. i wear glasses so the gum wrappers have always looked the same to me. thanks for introducing the Eye - One to me!
Posted by Thorsten O... on February 17, 2008 5:28 PM
@ Stewart: When calibrating you can decide which Gamma and luminance you will aim for. the Gamma should be 2.2 and luminance is given in the program. Maybe that is it, but else it sounds strange. You could chec this review as this guy seem to know what he is doing:
http://www.northlight-images.co.uk/reviews/pantone _huey.html

Posted by Stewart on February 17, 2008 4:15 PM
Great blog post. Thanks!

One thing though.. I have a pantone Huey and it seems to make everything look fine on my computer, but I look at my photos later on other computers, including my macbook pro and the imac at work (a photography magazine - the colours are correct!), and the images look far less saturated, to the point that they look nothing like I wanted them to. So I change them, and now all my images on the calibrated pc look really oversaturated, and normal on all the uncalibrated pcs and macs that I use.

Seems to be mostly ok for printing though.

Thanks for a great blog post, and for sharing it with us! Stewart.
Posted by Ivan Marca... on February 16, 2008 12:17 PM
l.e.d's are also more energy efficient. hey thorsten, i made the blog about colors i talked about. you might want to check it out if you dont know that already :)
Posted by CMphotogra... on February 16, 2008 5:04 AM
ambulance cars must be noticed by other drivers quickly. and even with all the flashing lights on our cars, we're ignored by some drivers.
street lights have l.e.d.'s nowadays, cause they are much cheaper, last longer than standard lights and have a great luminance at short distances. same thing for car lights. it's all about being noticed by others, which is the most important thing in traffic. i'm an ambulance driver myself, and i've seen loads of car crashes that wouldn't have happened if they only turned their lights on during the day.
btw, great article about screen calibration ;)
Posted by Thorsten O... on February 15, 2008 6:39 PM
Note that I added a text in the middle about laptop adjustment and ideal luminance..!
Posted by RPolom on February 15, 2008 1:08 PM
Nice article! Thanks for all that info... it sure does help sort out some of my own problems.
Posted by Thorsten O... on February 15, 2008 5:16 AM
@Darren: True, the 'easy' mode works best with LCD. But with my non-LCD I can adjust things on buttons on the front of the screen as well and then the 'advanced' was great, at least the first time, to determine where those buttons should be set. I really like that this miracle device with almost one button can fix it all, without me having to read and understand all kinds of philosophy and science about colors. "Easy" is good!
Posted by Thorsten O... on February 15, 2008 5:14 AM
@Chris. Not so many years ago ambulances and police cars had ONE blue light on the roof. Now they have blue light from wall to wall, in the front, in the back and to the sides.
Posted by Thorsten O... on February 15, 2008 5:12 AM
@imarcano: Yes, it's funny how we Mac users have been living in our little shell. Truth of the matter, working in graphic design (not photo editing) you can get used to a color space of too bright and too warm colors and can do amazing design that looks fine when it comes into print, even the printing guys have had much more disipline for years when it comes to colors. We have one amazing printing facility in Denmark, http://www.narayanananda.dk , which is also a monastery. I've visited them several times and they really have color under 100% control like no other. Everything at their place is perfect with the best monitors, their own profiles for each printing machine and paper, etc.
As for traditional graphic work, it's been a joke for many years that you worked on non-calibrated computers, in green (tube) or yellow light in the office, and then when you had to judge the work, you watched the test print in a daylight box with grey walls. And when it was OK, you started printing thousands of advertisements that will be seen under many different lighting conditions, none of them probably the same as that daylight box.
But for photographic work, you simply need an accurate color space. Look forward to your blog!
Posted by Darren Aba... on February 14, 2008 5:46 PM
I found that with my EyeOne II, I got a more accurate calibration by running it in "easy" mode instead of "advanced." Strange, but true. I thought it was weird, so I did some investigating, and found that others had also had the same result.
Posted by Chris on February 14, 2008 3:57 PM
damn! that was amazing. and ... i've noticed that they're replacing traffic lights from incandescent versions to l.c.d.'s, which i really don't like to look at! i've wanted to buy calibration equipment of my own for quite some time...
Posted by Ivan Marca... on February 14, 2008 2:54 PM
nice article. if i remember well, apple ships its computers with 1.8 gamma since editorials, and magazine and all that pro publishing is done with printers of the non regular consumption market, meaning that their printers and settings have been calibrated for years with 1.8 gamma.
what happens these days its that many people and many companies for printing and software, work in 2.2 gamma.
its all a big mess really. and you should set your computer depending on what your outcome is going to be, wether its printing, or web viewing. internet browsers also play an important role in colo profiles and how the rest of the computers are going to see your photos
i'm going to make a blog about that very soon, about the browsers and all that.
cheers and thanks for sharing!
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Comments
May 15, 2008 4:52 PM
Hello Mr. Overgaard,

TOS just released their debut music video - hope you dig the atmosphere,

Andrei
May 10, 2008 3:23 AM
Hey Thorsten hope you are doing well!
May 11, 2008 9:49 AM
Thanks, I'm good - and we'll soon have exiting photos to show the world!
May 08, 2008 7:47 AM
It has been, i confess, long overdue. But i have been procrastinating this simple task of leaving you a comment for weeks. I've been busy and only comment when commented.
I do admire your work and your blogs are quite the read.
congratulations on a wonderful page.
And. xoxoxox :)
May 02, 2008 6:04 PM
Super work! I will try and keep up w/ you. lol
Thanks for the invite.
xo - Tally
May 01, 2008 8:37 PM
I just wanted to say your work is brilliant! -V.Smith
May 01, 2008 4:08 PM
thanks for all the feedback, new friend! much appreciated from such a talent!
Apr 26, 2008 7:55 PM
hahah you have an awesome pic of george micheal...im still a closet fan of his lol
Apr 08, 2008 4:56 PM
Hi Thorsten

I just wanted to say hello and compliment you on your gallery. You've got a really great selection of pictures here, I really like your natural style and your use of light.
Lots and lots of interesting stuff to read too!
I reckon I'm going to be a regular reader.
Take it slow...
Mark
Apr 07, 2008 10:30 AM
Heeeeey... You're another one on here who I see has fanagled a way around (what I thought was the max) of 16 "Top Friends." How'd you manage that one, if you don't mind me asking? Whatever the case, very best of regards to you...CCx
Apr 04, 2008 12:02 AM
Thanks for the comment on my first post- nice to know I'm not alone in my technological woes! Love your photography- really beautiful shots you've got here.
Apr 01, 2008 5:44 AM
Hello.
Thank you for your kind words. I'm really glad to receive a comment from you.

Not all thinks the same, because I've received a lot of critics on flickr.

Regards, Ulissa.
Apr 01, 2008 12:20 AM
thnak you. I'm just collecting all the art i see in San Francisco... check out the new slideshow on TINGLETANGLE and WEMARNY sections on the nav bar menu of http://ozcillator.com. peace, franz
Mar 28, 2008 12:03 PM
Hello Thorsten. I've been doing a lot of uber-diving, and I must say that yours stands out as one of my top five blogs. It's so diverse and interesting! Keep up the good work! All the best,
Stewart
Mar 27, 2008 9:12 PM
Hi Thorsten,
Thanks for the great idea for a blog posting on how a designer comes to dress a star at the Oscars. I will have to write it! Continue to check my blog, I'm going to continue to add great stuff in the next few weeks.
xoNick
Mar 27, 2008 8:20 AM
Hello!Thank you very much for the invitation!I am going to read your blogs about digital photography - it is very interesting for me.
Mar 24, 2008 10:26 AM
ADDING NEW SLR PICTURES TODAY CHECK THEM OUT. WOULD LOVE TO HEAR FROM YOU. PEACE ...V
YSA
Mar 24, 2008 8:13 AM
Oh thank you so much! : )
Mar 23, 2008 8:03 PM
Hi Thorsten! :)
Mar 23, 2008 8:00 AM
Happy Easter!
Mar 23, 2008 7:29 AM
Have a great holiday
Mar 22, 2008 10:07 PM
Thanks for the compliments, kind sir. Very flattering considering how great your work is!
Mar 19, 2008 12:03 PM
Thanks for the add! You've got a lot of awesome work here--I'll be coming back to look through more carefully when I'm done with my finals. =)
Mar 19, 2008 9:12 AM
Who is u I don't no u so i can't talk u
Mar 16, 2008 8:05 PM
Hi my friend !! The whole truth about the small rocket is on my blog ;)
Mar 16, 2008 4:36 PM
I found it annoying, the D-Lux 3, that you can't get a good grip at it. That you use the screen as viewfinder is kind of OK. But the light from the screen, as well as the red AF light at night does not make it a stealth camera like a traditional quiet Leica M.
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Thorsten Over...
Male / 43

Denmark

Member Since: 6/17/2007
Last Seen: 5/13/2008

http://www.uber.com/thorstenovergaard

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