Setting the white point and gamma

I've heard that when calibrating your display you should set the white point and gamma to native. What is the difference between setting the white point at 65k and the gamma at 2.2?
Thanks in advance for your time
Rick

The difference would depend on what the native points were to begin with.

Similar Messages

Setting a White Point and Black Point

I would like to suggest for future versions of lIghtroom to have an ability to set the white point and black points similar to levels and curves in Photoshop. This would be in addition to setting middle grey in the white balance settings currently in Lightroom. I find that the method of using Threshold to find the closest white and black pixels and then using these points to set the black and white points in curves or levels provides a better way to fix a color cast than the methods available in Lightroom.

MB,
There is no real need for Black and White point eyedropper type tools in Lightroom. By holding down the Alt key while changing the Blacks or Exposure sliders the display will show the areas that are being clipped. This is much faster than looking around for the darkest and lightest areas manually. If you just like to click to taste (like using the White balance dropper) then forget the Alt key and just move the sliders until you get the desired look.
Remember that the problem with Photoshop is that there are so many ways to do the same thing that it has become difficult and bloated. Lightroom strives to keep the interface as clear as possible.

Establishing White Point and Black Point

Hi,
How do I Establishing a White Point and a Black Point in Lightroom 1.4.1 and especially in Lightroom 2 Bata?
Thank You,
Hersul

The last post by OP might have closed this thread, but given the relative lack of activity on this and LR2 forums (summertime?) - I'll go a little deeper.
i White point
- If your white balance is right from the start, you just use the Exposure slider to set the white point. If not, first set the white balance - that effectively sets a preliminary white point for each channel separately, or, to be more precise, matches the right side of the histogram for each channel - then set the Exposure. So, with the white point you have complete control over the histogram, as well as over each channel.
i Black point
- here the situation is different. You can move the left side of the main (composite?) histogram using the Blacks slider, but there's no means for moving channels separately. In theory, with digital capture, there probably should not be need for this, blacks should be always black, so that's OK, but...
I once had a batch of pics scanned from film. The film was poorly developed so it has some strong brown-magenta cast in the shadows. In Photoshop it was a piece of cake to set the black point by dragging the left ends of each channel to the left edge of the histogram (heck, even Auto Level did a wonderful job). In Lightroom, there's just no way you can correct this, because you can't control the channels separately.

Automatically set the Black and the White points in Aperture?

Jasoninajeep, in this thread, refers to this Aperture Export article, which includes the helpful hint that holding "{Option}" while clicking the auto-luminance button in the Curves brick will cause Aperture to set the Black and the White points without making any other changes.
Is there any other way to automatically set the Black and the White points in Aperture?
Thanks.

Hi BBurgess!
Unfortunately, it sounds like you may have a service issue on your hands. While our QuickStart guide provides details on installing the cartridges in their respective slots, putting those catridges in the wrong position may cause an internal issue with the Canon PiXMA MG3222.
We recommend contacting our Technical Support group directly via this Contact Us link. Our Technical Support group can provide you with all available service options.
Thanks!

How to set the out point beyond 9.95 seconds???

how to set the out point in Motion 5 beyond 9.95 seconds???

First you need to make sure your project is long enough then you can adjust the play range (in/out). To make sure the project is long enough:
1. From the project properties (command-J) go to the Duration field and enter a new duration.
2. Click on the down arrow icon to the right of the current time, there is an option to show the project duration. Once set to this you can double click the number and type in a new project duration. I'd recommend setting it back to show current time when done.
3. Of course you can also change the duration of a project when it is first created, in the project browser.
Once you're sure you have a long enough project you can adjust the in and out range. You then use the zoom controls in the bottom of the timeline to show more of the timeline and adjust the play range as needed. There's lots more about project and play range duration adjustments in the documentation: http://help.apple.com/motion/mac/5.1/

How do you set the in point of a clip?

I'm using the timeline template that has a number of clips flying by and I need to adjust the in point of the clips. To be clear, I'm NOT trying to adjust the point that the clip appears in the timeline but instead the portion of the clip that will be displayed as it fly's by within the Motion timeline.

All that that seems to do is set the in point of the clip on the Motion timeline. Again, what I am attempting to do is change what is seen on the particular clip that has been dropped into this template. Where the inset clip window appears on the timeline is fine but I want is a later portion of the video within that clip to be shown as it is flying by. As it is now the clip is just beginning to show the footage I want as it is flying out of view.

When I power up my mac, I see the white screen and the apple icon. After a few seconds of powering up the screen goes dark. Yet I still can the mouse arrow but nothing else.

When I power up my Imac, I see the white screen and the apple icon. After a few seconds the screen goes dark. I am able to still see the mouse arrow as I move it around. But nothing else. What is the problem and how do I recover?

Try this from another user:
1. Shut the computer down by holding the power button for 10 seconds
2. Restart the computer and press shift at the same time until you see the progress bar start moving
3. Once you reach the point where your screen goes dark and you see the cursor, type the first letter of the username for your computer, then hit Enter, then type your password, then hit Enter.
4. After a moment, you should see the spinning beach ball
5. Your screen should then move on to something along the lines of "Completing OSX Installation" (I can't remember the exact wording). Let it finish. After that it should go to your normal desktop and the issue should be fixed. (If your screen goes pitch black during this process, hit the space bar. I thought it wasn't working, but the screen was just sleeping).

My macbook pro won't start up. I get the white screen and the grey apple icon   the spinning wheel......and it doesn't change !

My macbook pro won't start up. I get the white screen and the grey apple icon   the spinning wheel......and it doesn't change !

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

Setting the Mount Point

Hi
My startup disk is mounting fine but not appearing on the desktop. It does appear in Finder windows and works OK.
I see that in Disk Utility the mount point is "/" where it should probably read: "/volumes/Macintosh HD"
How can I set the mount point to the correct directory?
Thanks / Eckhard

Aww you're taking the time - heroes are hard to come by, and they don't always win right off the bat but encouragement helps!
G4 Dual 450 MHz
1.12 GB SDRAM some was added, can't remember how much and that was 3 years ago.
80GB = 8.61GB free
Macintosh HD = 7.68GB free
Umax Powerlook 2100XL Scanner - SCSI. Only available when I restart with the scanner on of course. Currently off and not available.
Ethernet to a D-Link ADSL router, then to an Airport. Printer etc. is off the router.
80GB contains my working files, no system.
Standard Mac Keyboard and mouse, working fine for years.
Wacom tablet - working fine for years.
USB - I only use 2 devices, a Scandisk photo memory card reader, and a 500MB USB memory stick. I mounted and unmounted both and restarted. No change.
Nothing has changed, no recent system upgrade (or the MacHD disappeared well after I upgraded). Installed Poser Figure Artist a few months ago but to my recollection the Mac HD icon was still around after that. No new drives and this configuration has been stable (which I why I stick with it) for years. No other upgrades or updates (I LIKE to keep it stable!)
No freezes or crashes or hard restarts for months. Unrecoverable freezes are very rare, can't remember the last time.
Repair Permissions worked fine when I started from the Install CD. Minor problems mostly to do with flash - corrected.
FIND:
As per your instructions:
name is: .Macintosh HD
visibility = invisible
results = 0 items
or...
name is: .Macintosh HD
visibility = visible & invisible
results = 0 items
It's not renamed as it appears correctly in Finder windows, in Disk Utility, in Startup Disk and in System Profiler, and can be opened no problem. Just won't show up on the desktop.
Here is how it appears in System Profiler:
Macintosh HD:
Capacity: 28.63 GB
Available: 7.64 GB
Writable: Yes
File System: Journaled HFS+
BSD Name: disk0s5
Mount Point: /

Setting the zero point to an exact integer

When I set the zero point to an intersection of two guide lines, I often find that it is out by exactly 0.088mm. How can I set the zero point to an exact number of mm?

There aren't any frames involved. If the zero point is at the top left corner and I insert horizontal and vertical guides at, say, 10mm in from top and left side, then drag the zero point to the intersection of the two guides, clicking on the two guides reveals that they are now at -0.088 instead of zero. I accept that 0.088mm is not a huge error, but it still niggles me.

My MacBook will not boot up past the white screen and rotating circle

Tried to start up my MacBook. Can't get past the white screen and rotating circle. Left it on for 10 min. same results. Any solutions before I bring it in for repair? Thanks.

Zap the pram
Maybe wait longer and see if it does anything or if anything comes up.

HT203167 most of my music has the exclamation point and won't allow me to place songs in a playlist on a new ipod...why? ?

Most of the songs in my iTunes library has been tagged with the exclamation point and will not allow me to place those songs on a new Nano iPod I bought...why? This is music I have purchased in the past.

See here: iTunes displays a -69 error when syncing iPod
You can use the disk diagnostic tool built into the iPod's firmware to test the health of it's Hard Drive. See this post from another forum member turingtest2 on how to do this as well as what the resulting numbers mean.
https://discussions.apple.com/thread/3784647?start=0&tstart=0
B-rock

I just got photoshop cc 2014 on windows 8.1 64 bit, and it starts up on the white layout and and whenever I start a project it is in a window? Also whenever I try to change on of these it does not save. I am using the trial

just got photoshop cc 2014 on windows 8.1 64 bit, and it starts up on the white layout and and whenever I start a project it is in a window? Also whenever I try to change on of these it does not save. I am using the trial. Basically nothing saves and it was all screwed up when I first got it.

Do a screen screen capture and post it here so we can see what you stating about a white layout...

How to set the Selected row and Column in JTable

Hi,
i have a problem like the JTable having one Method getSelectedRow() and getSelectedColumn to know the Selected row and Column but if i want to explicitly set the Selected Row and Column,then there is no such type of Methods.If anybody has any solution then i will be thankful to him/her.
Praveen K Saxena

Is that what you're looking for? :myTable.getSelectionModel().setSelectionInterval(row, row);
myTable.getColumnModel().getSelectionModel().setSelectionInterval(column, column);

How to set the page size and the margins programatically

Hello,
I am working with crystal report XI Release2 and asp.net.
One of my report is having 4 graphs in a single report.In order to display all the graphs in one page i have set the paper size as A3.(Via Crysta report ->File->Page set up)
But the page size A3 is not provided by all printers.So problem comes when the application is diployed on a machine which does not support A3 Printer.All the graphs will not be shown on a single page.
Also Each and Every time ,when the application is diployed on a machine,user has to open the crystal report and adjust the page size accordingly to get all the reports on a single page.
This is a kind of usability issue also.
Is it possible to set the page size and the margins programatically say for eg 11 X 17.so that with out doing anything all the 4 graphs will get displayed on a single page ?
Please let me know if you require more information regarding this issue.
Thanks in advance.
smitha.

Hi Ludek,
i could solve the issue by using the follwing code.
report = new ReportDocument();
PageMargins customPageMargin = report.PrintOptions.PageMargins;
report.PrintOptions.PaperOrientation = PaperOrientation.Portrait;
report.PrintOptions.PaperSize = PaperSize.Paper10x14;
customPageMargin.rightMargin = 1;
customPageMargin.topMargin = 0;
customPageMargin.bottomMargin = 0;
report.PrintOptions.ApplyPageMargins(customPageMargin);
Thanks for you help.
Regards,
smitha.

Setting the white point and gamma

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