Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-09-2008, 06:44 PM   #1
Veteran Member




Join Date: Feb 2008
Location: NJ
Posts: 525
Screen calibration question for Mac users

I have a Mac at home (MacBook laptop). I know that laptops are not the best tools for working with images but I just do not have the space for desktop and monitor. My Pentax DSLR is set to sRGB color space. If I set my MacBook to use sRGB color calibration, the screen looks too blueish and just hurts my eyes. When I post pictures on the website from my Mac, they look too dark on a PC screen.

So how do I set the MacBook to display the pictures same way as they would look on PC?

I know that Mac is somewhat better for imaging but all my friends and family members have PCs and I am done listening to comments that my pictures are underexposed. So the goal here is to match whatever the 93% of other people (PC guys) are using :-)

Thanks.

04-09-2008, 06:59 PM   #2
Inactive Account




Join Date: Sep 2007
Location: SD
Posts: 61
drabina, i know exactly what you're saying. you're probably using "Color LCD" as your color profile on your MacBook. I've got a MacBook Pro, and have run into similar issues trying to use the sRGB profile in there.

I'm not going to pretend to be an expert on color settings, I was able to get my photos VERY close to how they print at our local shop. My local shop (Harold's Photo) sent me their color profile for their printers and I use that to proof my photos in when i'm using Aperture2. I imagine Adobe Lightroom has similar functionality for proofing your images in a different colorspace.

I'm not sure exactly how iPhoto handles color spaces, since my images seem too look pretty decent in iPhoto, but still not quite right. So I'm not going to be of much help there... I do have a couple of profiles that match very well to what everyone else'll be seeing. You're not going to get at match for everyone (because everyone's color settings are different) but you can get it look the same on your screen and when you print it. Let me know, and i can post a couple of these color profiles for you to try out. If you're not using Lightroom or Aperture, give 'em a shot. These profiles can also be used with Photoshop if you're using that. Let me know if you have any other questions, I'll be glad to answer them! I'm sure there are other that understand more the technical stuff with colorspaces that will be able to help as well!
04-09-2008, 07:21 PM   #3
Forum Member
imadethis's Avatar

Join Date: Sep 2007
Location: Fremont, CA
Posts: 89
Hello,

Are you using a colorimeter, and how are you calibrating your laptop?

All jpeg's or .PEF's are taken in either sRGB or Adobe's color space. Once you take a photo and open it in the computer, your photo editing software will read the color space built into the file and display it on Photoshop.

Now on the other hand, the monitor is a separate and different procedure. The monitor relies on a separate color space than from your camera, so matching the sRGB color space for on the monitor will not work because monitors and cameras are independent of one another. All monitors read what is called an .ICC profile, which is the color space your monitor will display. Since you chose sRGB as an .ICC profile, sRGB on your mac laptop means the sRGB .ICC profile, your monitor's colors went all blue and whatnot. You will need a calibrated .ICC profile for each monitor you use for each monitor to display the same kind of image/color/brightness/etc. I'm not familiar on the procedure on a mac, so maybe someone with a mac can chime in.

On a PC, the procedure is to Connect the Colorimeter, Open the software, Put the colorimeter onto monitor, The colorimeter will scan your monitor, the User will adjust the monitor's settings manually, and the software will complete building a custom .ICC profile that's calibrated.

In general, all screens should be calibrated for Contrast, Brightness, R, G, B, and Color Temperature to display an image correctly from one monitor to the next. You can try to do this by using software and eyeballing it, but the best practice is to get a colorimeter for consistent results.

A few different types of colorimeters are Pantone Huey, Spyder, etc. and range in price from $70-200+

Cheers!
04-09-2008, 07:23 PM   #4
Inactive Account




Join Date: Sep 2007
Location: SD
Posts: 61
imadethis is right, however, in lieu of buying a colorometer, you should be able to find some color profiles thaf will get you pretty close, or at least good enough for government work

04-09-2008, 07:24 PM   #5
Forum Member




Join Date: Jul 2007
Posts: 83
I use the ColorVision Spyder2express colorimeter to calibrate my monitors.
04-09-2008, 07:33 PM   #6
Forum Member
imadethis's Avatar

Join Date: Sep 2007
Location: Fremont, CA
Posts: 89
QuoteOriginally posted by mitchkramez Quote
imadethis is right, however, in lieu of buying a colorometer, you should be able to find some color profiles thaf will get you pretty close, or at least good enough for government work
You could try using Adobe Gamma? to manually eyeball the calibration, and there are other free softwares out there, but I haven't tried these myself. They will enable you to do government work ; )

Downloading profiles from other monitors will not work though unfortunately. Each monitor is uniquely different and the R, G, and B values and color temps will differ from one monitor to the next.

Here's a great site with more information:
Monitor Calibration and Profiling
04-09-2008, 09:05 PM   #7
Senior Member
johnsey's Avatar

Join Date: Mar 2008
Location: Fargo, ND
Posts: 113
I've used that site and its worked wonders to help calibrate my pc monitor which was too dark. (which could be very possible that your friends pcs are too) Keep in mind macs and pcs use different gamma settings altogether. My g4 powerbook on the other hand has never needed any tweaking to calibrate, and i typically work with my images only on my mac with the adobe profiles already associated with the raw or scan files. I only use my pc as a storage archive.
04-10-2008, 07:32 PM   #8
Veteran Member




Join Date: Feb 2008
Location: NJ
Posts: 525
Original Poster
Thanks to all for replying and all the helpful information.

What about the gamma? Should I change it to match PC? I am asking because when I get the brightness adjusted on the PC, my photo uploaded from Mac looks OK. Sure there are differences with the color but that's something beyond my control (will not be calibrating everyones monitor).

I guess another question is, when the gamma is adjusted during the screen calibration, does that affects lets say Lightroom application or it has its own settings?

04-12-2008, 05:22 PM   #9
Veteran Member




Join Date: Jan 2008
Location: Seattle, Washington, USA
Photos: Gallery
Posts: 812
The monitor's calibration file is passed by the OS to your image editor, which should use that information in adjusting the program's display of colors and brightness curves (gamma) on that monitor.
04-13-2008, 09:31 AM   #10
Veteran Member




Join Date: Feb 2008
Location: NJ
Posts: 525
Original Poster
QuoteOriginally posted by christinelandon Quote
The monitor's calibration file is passed by the OS to your image editor, which should use that information in adjusting the program's display of colors and brightness curves (gamma) on that monitor.
What about my old images that were transferred onto the computer before I calibrated monitor with PC gamma? Will they adjust automatically when I launch image editing software (iPhoto, Lightroom)? If not, what are the steps I should take to convert them so they look decent?

Thanks.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
calibration, camera, mac, macbook, pc, photography, pictures, question for mac, screen, space, srgb
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Australian Pentax Users & Camera/Lense Calibration Christopher M.W.T Pentax DSLR Discussion 18 04-29-2012 07:52 AM
For Mac Users: Upgrade tiger to snow leopard? lurchlarson Digital Processing, Software, and Printing 22 02-18-2010 07:38 PM
New FREE HDR Program for Mac Users mithrandir Digital Processing, Software, and Printing 2 10-01-2009 09:17 AM
Mac Users: Aperture or PhotoLab3? drewdlephone Digital Processing, Software, and Printing 19 12-10-2008 03:34 PM
2 Questions for Mac Users RJL Digital Processing, Software, and Printing 25 02-11-2008 01:10 PM



All times are GMT -7. The time now is 01:30 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top