Strong Contrast Adjustment

This image is given as an example in The Creative Digital Darkroom, Eismann: http://www.creativedigitaldarkroom.com/CCD_Downloads/Chapters_Files/Ch_6/ch6_BelowSeaLevel .jpg
The contrast of the sign was adjusted by steep curve applied to a selection of the sign on a Curves Adjustment Layer in Photoshop.
I tried using the Lightroom Adjustment Brush to approximate the Photoshop adjustment by painting Contrast set at 100. This had very little effect, and I thought that I really do need Photoshop for such difficult adjustments. However, I decided to pull out the stops, and I was able to get an excellent contrast adjustment using the following Adjustment Brush settings and painting on the sign: Exposure: 2.14; Brightness: -200; Contrast: 100; Clarity: 100; Sharpness: 38.
This clearly pushed Lightroom to the limit, but it performed well, and it avoided another trip to Photoshop.

Thanks for the tip Eric!

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Contrast adjustment creates color cast - why and how to fix?

I used a local curves adjustment (with a layer mask) set to "Strong contrast" to make the space shuttle "pop" in a particular shot. I looked it so much I copied that adjustment layer to the rest of the launch sequence. I then realized that as I went earlier in the sequence (20 seconds in real time at most) each successive photo developed a blue color cast from the contrast adjustment. I tried a luminosity blend hoping that would take the color out but no change.
Ideas as to why? And best way to correct?
PS: It's a tiff file that was sent from lightroom with the proper white balance.
Thanks!
Roscoe

Could you post lores or sections of the image where the adjustment worked and one where it resulted in the cast?
If switching the Adjustment Layer’s Blend Mode to Luminosity does not work (which seems a bit peculiar) the you could possibly work against that with a Hue/Adjustments Layer (in a Group with the Layer Mask applied to that instead of the Curves Layer or clipping masked to the Curves Layer after turning off »Blend Clipped Layers as Group« for it).

The contrast adjustment in Aperture version 3.2.3 causes picture to go black

I can reliably turn off and on the contrast adjustment in see the error occur. When I try to re-generate thumbnails for the picture, it re-generates either as black of random color stripes. I have reinstalled Aperture and rebuilt library and the error persists.

I have reinstalled Aperture and rebuilt library and the error persists.
It still looks like their might be a problem with your library. Do you see the same corruption for all your raw images or only for some selected few images?
Do you see the same error, if you create a new Aperture library and import some raw images into the new library?
If a new library works well, I'd suggest either to repair your current libary manually by removing some files from the library package (see the link below) or to try to import the current library into a new, empty library.
Manually repairing the Aperture Library: Re: Aperture 3 rebuild library - SQLITE MISUSE

Is the iPhone screen contrast adjustable?

Is the iPhone screen contrast adjustable? I'm not talking about brightness. My screen shows shadowy horizontal (in portrait mode) stripes. I can still read the screen, but it is generally washed out, with the prominent stripes. Playing with the brightness doesn't help much.

I opted to send mine (well my wifes) in, in the past.
Call 1-800-MY-IPHONE
Tell them the problem.
They will ship you a box (prepaid to send back) with all the materials needed to ship back.
You will be told to take the SIM card out (they will even send paperclip to help). Then pack up (they even send tape) and send back.
You can put your SIM into any other phone that uses SIM cards and use it while yours is getting fixed/replaced.
Once they get it, it is like a 1 day turn around. Ship, repair/replace, ship back took me just 3 days. Your experience may vary.
Be sure to really explain the issue. I would even include a note in the box back explaining it in case the service notes the tech writes are not clear enough.
Message was edited by: DaVBMan

Exposure vs. Levels vs. Brightness/Contrast Adjustment Layers?

I have some photos that are a bit underexposed and I'm trying to brighten them up a bit and I made a Levels adjustment layer and also experimented with the Exposure adjustment layer. Are these essentially doing the same thing OR are there reasons to have a Levels adjustment layer along with an exposure one and a Brightness/Contrast one?
Thanks in advance.

The Exposure adjustment in Photoshop is primarily meant to correct tonal values of High Dynamic Range images, which are 32 bits. This command makes tonal adjustments using a linear color space or gamma instead of your image’s color space. You can use it on 8 bit or 16 bit images too, but the adjustments may seem rather drastic.
When rescuing poorly exposed 8 bit or 16 bit images, I prefer Levels or Curves because you have greater control. Brightness/Contrast, isn't something I use much.
Nancy O.

Weird contrast adjustment problem...

I've been attempting to emulate the in-camera settings I use on my Olympus E510 in order to preserve highlights, but are those that are only used by the Olympus Viewer software. In doing so I have found what might be a bug, although I'm not sure what with.
I've left Raw Fine Tuning to the Apple default settings, and using the 'Highlight/Shadow' view. If I see clipping in both shadows and highlights, I've been trying out a method of turning down the contrast a little (using the Enhance brick). One click on the arrow sets it to -0.05, which is just enough usually.
However, I have found that it often recovers more of the shadow than the highlights. If I then try to bring up the Blackpoint adjuster, the shadows darken, but the blue indicator does not operate at all, it seems like the scale in the histogram has hit a kind of wall, and doesn't actually move down to the clipped zone.
At the other end of the scale, the highlights display as expected, and the red clipping indicator shows up as you make adjustments.
Anyone else seeing this?
Thanks
Andy.

I just figured something out. If I disable the three finger drag for the trackpad the problem goes away. That's a weird bug. Any workaround?

Brightness/Contrast Adjustment for Videos?

Is it possible to adjust the brightness & contrast for videos on iPod?

Is it possible to adjust the brightness & contrast
for videos on iPod?
Twenty thousand threads later and I've never heard this question asked before. If you think it looks bad, it may be that your iPod isn't working properly. Go to a store and compare it with another one, but make sure you look at your own iPod in the same store light.

Contrast adjustment

Any way to adjust the screen contrast so I can read it without the back light?

That's no answer...
With previous versions of ipods, I could read the screen without turning on the backlight...thus saving the battery life.
This new generation seems to be impossible to read without the backlight.

Save video with contrast adjustment?

Hello!
I've searched for this on many sites, and can't seem to find an answer, not even in the Quicktime manual. I am using Quicktime Pro 7.4.5, and have a black and white music video. I need to bump up the contrast slightly to make the black darker. I can achieve this in the Audio / Video settings for playback, but is there a way to save the video with these settings? I've had no luck doing so, so far.
Any help, or another way to achieve this would be helpful!
Thanks in advance!

A/V Control settings are not saved with the file.
QuickTime Pro has some built in filters but that would require an export. You don't want to compress an already compressed file.

IPad Screen Contrast Adjustment Issue

On my iPad, which is the first model with the Retina display, I'm having some issues with the screen. Whenever I watch a video or view something where the majority of the screen is dark, the "whiteness" of the screen becomes very high, to the point where white objects on the screen are overly bright and unrecognizable. When I go back to a primarly white screen, (such as exiting full screen in the YouTube app), the whiteness goes extremely bright to the point where the different colors can't be distinguished, and the text is almost unreadable. Like this. It's almost as if the contrast is turning all the way up. After 5-10 seconds, the screen fades back to normal.
The problem is that when watching videos, bright objects on screen are so bright they can't be seen.
Has anyone seen this before, and what is the recommended course of action.

Konnor,
The best for you is go to the Apple Store, try to check if the warranty is active.

Adjustment layer (Brightness/Contrast) not rendering correctly

So I imported this big PSD file into after effects and everything looks good except this one adjustment layer, it's a brightness/contrast adjustment layer and instead of increasing the contrast in after effects it just turns the layer its suppose to adjust pitch black.
Thought this was odd given PS and AE share the same engine..

Yes, they do use the same code bassis, but some PS stuff simply is useless in AE and conversely, there are technical limitations inherent in how some of it works. The new PS Brightness&Contrast uses a weighted formula without making provision for temporal stability, hence it is of no use in AE - you wouldn't want your footage to flicker. The old algorithm on the otehr hand simply applies a dumb linear adjustment and therefore works. Not sure what you mean about smart objects - AE retains the rasterized layer data of an SO and that is all there is to work with. AE has no access to specific custom data that Photoshop uses, which in itself could just be a reference to pasted AI data or something like that. Simple technical limitations to prevent creating "loogic loopholes" and unresolvable cyclic dependencies. For more specific details please refer to the help and adapt your workflow to avoid these dead ends. There is no point in trying to finish everything in PS, if you're going AE, anyway.
Mylenium

Satellite 4300: Can you adjust contrast?

Hi All !
I've just bought an old 4300 Pro and whilst I can find the brightness control on the screen, I can't find any contrast adjustment. Can anyone advise please
( would prefer not to have solutions that involve removal of motherboard etc
- too depressing ! )
Thanks
#Pete

Barrie
Its got Windows 98 ( not sure if its 98 or 98SE ) I have just adjusted
Accessibility Properties to Show High Contrast in Settings - that seems to have helped a little. I'm sure theres room for improvement though ; - my last Laptop sittting next to me - lonely and discarded had far better contrast - - perhaps I should have just bought a brand new laptop - the only trouble is my 13 yr old daughter takes out her frustrations on the laptop - probably why the last one expired !!!
Thanks for the link anyway - perhaps the drivers need updating.....
Cheers Pete

Enhance Contrast does not stick

I like to enhance the contrast on my display to add a little pop to the colors, so I set the System Preferences > Accessibility > Display > Enhance Contrast slider to where I want it. When I restart my computer, the slider is still set to the same spot but the contrast is back to the normal setting. As soon as I adjust the slider, the contrast adjusts accordingly again, but to do this everytime I restart my computer is a pain.
I don't believe it is an issue with Mavericks, it was also doing it in mountain lion. I have both an iMac late 2012 and a Macbook Air mid 2013, and it does this on both devices.
Any ideas? Anyone else see the same thing?

CS5. And I should say, the instructions given on the Adobe site on how to swap out the colors.xml file indicate a folder that doesn't exist. There is no Preferences folder. It's Configurations.

Aperture creating new version of image for each adjustment applied!

To anyone out there who can sort this one out, I will be forever grateful!
Here's the problem. I'll be jamming away in Aperture, adjusting photos like a madman. After adjusting a random number of photos (it usually varies between 5-30 photos or so after starting Aperture each time), the adjustments panel will no longer update when I click on a new image (i.e. it holds the info from the last image I adjusted and will continue to apply new adjustments to that last image even if another image is highlighted). If I switch to the metadata panel and then back to adjustments it will refresh itself and recognize the currently selected image (although I have to do this for EACH image I want to adjust once it starts acting up like this). The BIG problem is that even if I get the adjustments panel to recognize the selected image at this point, for EACH adjustment I apply it makes a new version of the image. For example, if I first change the contrast, it will make Version 2 of the image and select it (which is what it's supposed to do for the first adjustment, because I have "create new versions when making adjustments" checked in my preferences), but if I then make another adjustment like changing the saturation, it makes Version 3 of the image (from the master, so that only the saturation adjustment is applied and not the contrast adjustment). As you can imagine, this utterly destroys my once incredibly efficient Aperture workflow and makes it pretty much impossible to use Aperture for adjustments unless I turn off "create new versions when making adjustments" in the preferences, at which point it does seem to work again (although I've only tried it on a few images, so not 100% sure it will work properly even then). If I restart Aperture (or my computer), it will work normally again for a few pictures and then will start acting up again with the same problem.
Originally I was running into this problem on my PowerBook G4, and so I figured it was just because Aperture didn't like my wussy G4 processor and was acting up when the load got too heavy (after all, the adjustments would work fine for up to 30 images or so). However I recently purchased a sexy iMac 24" 2.8 GHz and maxed out the RAM to 4GB, but I'm still getting the same darned problem with Aperture on my iMac. Yes, I'm using the same library of photos I was using on my PowerBook G4.
This problem has been plaguing me for about 3 months now (everything else in Aperture works fine so I'm still using it to import and organize my photos, I just haven't been able to make adjustments on large groups of pictures for a while), and I've searched and searched these forums countless times to see if anyone has run into similar problems, but I've not seen a single mention of it. I've also tried EVERYTHING mentioned for similar problems (rebuilding library, vacuuming database, erasing com.apple.aperture.plist preference file, repairing permissions, reinstalling Aperture, making burnt offerings to Steve Jobs), and NOTHING is working. ARRGH!!
For those who might have some words of wisdom to offer this delighted-***-miserably frustrated Aperture user, here are a few more details about my setup:
I have a library of about 37,000 photos, the vast majority of them being RAW .CRW files from a Canon 10D. The 25GB library file is stored on my internal hard drive, and all photos are referenced from an external LaCie 500GB FireWire 400 hard drive. I have a LOT of export plug-ins installed in Aperture, but no image adjustment plugins. I have generated previews turned off for all projects. I've had the same problem on both my PowerBook G4 and new iMac 24" 2.8 GHz. One other thing worth mentioning is that instead of upgrading from 2.1 (which was already giving me this problem) to 2.1.2, I downloaded the full version of 2.1.2 and installed it. I noticed that my 2.1 Aperture.app file was less than 100MB, whereas the 2.1.2 Aperture.app file is over 300MB. Don't know if that's normal or not.
The only other thing I can think of to try at this point is to load a new library into Aperture and import a large group of pictures and make adjustments to them to potentially see if my problem is being caused by Aperture or by the library. Will probably try that tomorrow.
I would appreciate any advice or feedback anyone can offer about this nasty little problem, as it's giving me a serious hormonal imbalance.
THANKS!

Thanks for the reply RB, but my current workflow depends on me creating new versions when I make adjustments. I suppose as a temporary solution I will probably have to either turn this preference off or just be willing to constantly restart Aperture. At least I finally found another thread with the same problem, so finally I don't feel completely alone in the far reaches of the Aperture universe. For anyone who is interested, here is the link to that thread:
http://discussions.apple.com/thread.jspa?messageID=8555067
It appears this problem is closely related to the ubiquitous black viewer problem that seems to be plaguing far more users than my issue (although I've run into the black viewer problem a few times myself), as both problems force Aperture to output the following message to Console:
Main Thread Exception in Aperture: * -NSCFArray objectAtIndex:: index (1) beyond bounds (1)
It seems that both of these problems existed in Aperture 1 and 1.5 up until the 1.5.6 upgrade which seems to have fixed it, but then with Aperture 2 the problem seems to have returned. At least that's the gist of what I've been reading on a number of threads. Whatever the case, I hope Apple gets this sorted out in their next update!
As it appears there is no proper answer to this problem at the moment, I'm gonna go ahead and mark this thread answered (and since you were kind enough to at least take the time to reply RB, you can be credited with the answer... thanks!).

Bridge CS6 How to turn off auto tone adjustment for the loupe?

Adobe Bridge CS6. 'Apply auto tone adjustments' is unchecked in Camera Raw Preferences. Yet every time I click on an image in the preview panel it does a tonal adjustment before it magnifies the image detail. I am viewing bracketed images and do not want any auto tone applied at any time while previewing images. How can I turn off all auto tone adjustment for the program - including the loupe. I never had this issue in a previous version. I'm on PC. Thanks for any help!

All 4 Default Image Settings are unchecked. Checking this further I have found this is only a visual issue in Bridge Preview. I have opened the same raw file before any adjustment had taken place (w/o using the loupe magnifier) in PS CS6 - and then again opened it after using the magnifier which did an auto contrast adjust on the image. Both files are the same in PS CS6. This is only a visual issue within Bridge (Master Collection CS6) on my Win7 64 bit machine. No issue with a standalone PS CS6 version on my XP 64 bit system.
There is no auto adjustment of the image until I use the loupe (magnifier tool).
Note my previous comment as to what happens when I use it. Thanks!
I have a feeling this is a bug. I have a Photography help group on fb and posed this question to them. I had mostly no issue responses but got this from another person. I checked after reading this and it is the same issue with me - this only happens with raw files, not jpeg. Here is his comment line.
Carl, I see what you mean, I have tried several adjustments to the preferences and none seem to work. The image automatically adjusts after a brief time. There does not seem to be any way to turn off the adjustment. I'm using Bridge CS 6 on a Mac. I don't think it has anything to do with camera calibration, but it only happens when using RAW files. I tried it on JPGs and TIFFs and it did not adjust the loupe image. Wonder what Adobe has to say
So - tThanks for any thoughts! So at least it's not going to be an editing issue - but it's a pain here. I use Bridge to edit my shoots and I often shoot bracketed images. While I cull images according to the histogram, I also do visual assessment and I can't have Bridge doing it's own thing on tonal adjustment.

Strong Contrast Adjustment

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