Forums


Go Back   The TrekEarth Forums >

Notices

Reply
 
Thread Tools Display Modes
  #1  
Old 05-01-2008, 03:03 AM
danielswalsh danielswalsh is offline
TE Expert
Thread Starter
 
Join Date: Jun 2004
Posts: 2,730
Default iMac's and monitor calibration (Spyder)

Hi everyone;

I purchased a Spyder2express monitor calibrator sometime ago, but I don't use it nearly as much as a I should. I ran it last night and found that the 'after' looked a bit warm in comparison to the 'before'.
Is there anyone who can offer their experience...?

Cheers!
- Dan
Reply With Quote
  #2  
Old 05-01-2008, 10:12 PM
yanseiler yanseiler is offline
TE Junior Member
 
Join Date: Mar 2006
Posts: 210
Default Re: iMac's and monitor calibration (Spyder)

Isn't it the goal to see a difference once the monitor is calibrated ?
Reply With Quote
  #3  
Old 05-02-2008, 06:33 AM
green green is offline
TE Expert
 
Join Date: Aug 2003
Posts: 1,348
Default Re: iMac's and monitor calibration (Spyder)

The purpose of a calibration tool is to calibrate a monitor and off course you should see difference once the calibration is done. But if the difference between before and after is too dramatic there's a good chance that the calibration wasn't done properly.

I have an iMac and I use a spyder2 calibration tool. Before running the software, I make sure the brightness setting is set to the maximum. When running the software, I choose "2.2 native" as a target and unticked contrast, brightness and back lighting setting (as except for the brightness those setting does not exist on an iMac). After the calibration, the "after" is always a little warmer than the "before". But you need to understand that the "before" display shows how your monitor looks like without any calibration profile (which is fine when you calibrate your monitor for the first time).
Now if you want to see the difference between the new calibration and the previous calibration, you need to go into your monitor setting (in system preference) and then select the color tab. In the "display profile" select the previous profile (assuming that at the end of each calibration you've saved the profile in a new file) to see the difference (usually very tiny).
Reply With Quote
  #4  
Old 05-02-2008, 06:50 AM
danielswalsh danielswalsh is offline
TE Expert
Thread Starter
 
Join Date: Jun 2004
Posts: 2,730
Default To: Green

Romain- Thank you VERY much for your input!

I have been turning up the brightness as high as possible and only ticking brightness (not backlight or contrast). I do not recall seeing the option to select 2.2 native anywhere- can you please tell me more?
I guess that's why the difference between before and after seemed so great- because it wasn't showing me the last- it was showing me with NO calibration.

This all comes about because I just bought a new printer (Canon Pro 9500) and I want to ensure that what I see in Photoshop/ Lightroom is what I get when I print! I believe my color profile in Lightroom is set to Adobe RGB- is that what you use Romain?

Cheers!
- Dan
Reply With Quote
  #5  
Old 05-02-2008, 06:52 AM
danielswalsh danielswalsh is offline
TE Expert
Thread Starter
 
Join Date: Jun 2004
Posts: 2,730
Default To: yanseiler

Hi Yan;

Yes, I realise you are SUPPOSED to see a difference. I'm saying that the final results almost seem to be tooo warm to my liking.

Thanks,
- Dan
Reply With Quote
  #6  
Old 05-02-2008, 08:18 AM
yanseiler yanseiler is offline
TE Junior Member
 
Join Date: Mar 2006
Posts: 210
Default Re: To: yanseiler

Hi Dan, if it looks strange you can still run it again once it is calibrated in order to make sure that there is no difference....
Best
Yan
Reply With Quote
  #7  
Old 05-02-2008, 09:51 AM
green green is offline
TE Expert
 
Join Date: Aug 2003
Posts: 1,348
Default Re: To: Green

Dan,

You're welcome.

That 2.2 native (Monitor gamma setting) might not be available in the Spyder2Express software. I'm using the Spyder2suite which a version little more advanced than the express but less than the Pro.
Actually, I've just check the spec on spyder website and found out the gamma setting and colour temperature setting are fixed. I believe that you might be using the Apple gamma setting 1.8 as default but that should not have any impact on the color temperature of your monitor, the colour temperature setting does have an impact obviously. Now from the top of my (I'm at my office now), I think I'm using 6500K.

I don't use lightroom but camera raw and Photoshop. When I develop my RAW in Camera RAW I use ProPhoto RGB which has the widest gamut. It's only in my photoshop post-processing that I convert to a color space that will suit the end use of the picture. If the picture will be published on the web, I'll convert it to sRGB. If it's for printing, I will convert the picture to a color space that will suit the printer and the paper color space. After converting, I will fine tune all the correction have done prior the convertion if necessary. That's why I always use layers in my processing.

In short, I start with the widest gamut as possible and depending of the end use of the picture I slice it down to tighter gamut to fit the end use colorspace. This is my way of doing it other might prefer to use the target colorspace right from the start. This is also a valid way to work a picture as sometime, some tighter colorspace will never be able to reproduce a colour no matter what you do. So some people thinks it's better not to see that color from the very begining of the post-processing.

PS: All what I wrote above is what I think I know about simple color management. But color management is extremely complex. Actually, it is a job usually done by specialist in the industry. So some parts of what I just wrote might not be as accurate as think they are. So I think it is always worth to check them out from other sources.

Cheers,

Romain
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 08:37 PM.



Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.
explore TREKEARTH