ACR - exposure slider

I notice when I use the exposure slider in ACR and back off when I see just the initial red clipping my image is way way over exposed... Anyone else experience this problem?

The clipping highlights are only an indication. Your best exposure will probably have some elements of red and blue; so trust your own eyes.
Use the recovery slider and black slider if necessary.
The vibrance slider is also useful - it will enhance subtle colors (e.g. sky and leaves in a landscape) without blowing out more saturated colors e.g. (red and orange flowers)
Have a play around with all the sliders and experiment - no permanent changes are made to raw files or jpegs in ACR.
 

Similar Messages

  • Exposure slider not entirely linear ?

    Ive recently captured an image with a bright, red to orange sky in the background due to sunset conditions. With a linear preset in ACR (all tonal controls zero, parametric and point curve linear) theres no clipping indicated.
    Actually the Exposure slider has to be raised to +0.70 in order to drive relevant parts of the sky into clipping. But, the Exposure slider has to be set down to -0.70 in order to detach the histogram from the right end of scale.
    In between, its obvious that the histogram does not react linearly to the Exposure slider. Increasing it from 0.70 to +0.70 accumulates and compresses more and more data in the right corner of the histogram (up to RGB 254) without making the final step to clipping.
    Output space is set to ProPhoto RGB, Noise reduction and Sharpening are off, the Recovery slider for sure is at zero. Its CS4 + ACR 5.2.
    Any thoughts or explanations?
    Thanks!
    Peter

    > You can effectively get linear output from Camera Raw (with the exception of gamma encoding) by creating a custom color profile with the DNG Profile Editor with its Base Tone Curve set to Linear, then use the Camera Raw Defaults when processing your image and select that custom color profile.
    Eric, - Many thanks for joining discussion. So what would be the difference between a.) using such linearized custom profile created the way you describe with the DNG profile editor, and b.) employing a linear preset in ACR, means to set all tonal controls to zero, parametric/point curve linear while using the baseline matrix profile ?
    Or, let me ask straightforward: could there possibly be something behind my question, or am I barking up the wrong tree ?
    > The conversion of the demosaiced raw data from the camera's color space in sRGB, aRGB or ProPhoto RGB includes the non-linear transformation as well. This can not be avoided in ACR to my knowledge
    Again my understanding was that matrix-to-matrix conversion is essentially a linear transform (if this is the right term). Means that linear scaling and matrix-to-matrix conversion are essentially commutative, the sequence can be exchanged and the results will be the same (provided that the absolute value of the scaling factor is adjusted) and despite different matrix primaries and different gamma. However, I agree that there are a couple of constraints such as:
    /> out of gamut colors
    /> fancy 'gamma' e.g. with the sRGB TRC
    /> AbsCol conversion between different white points which can introduce additional clipping
    /> RelCol conversion between different white points (not sure about this one)
    So in order to check my approach of testing, I did some ColorChecker exercises. Processed it through ACR (linear preset) with different Exposure settings. Converted to 'linear gamma' ProPhoto RGB in Photoshop. Finally, all derived ratios R2:R1, G2:G1 and B2:B1 were approx the same, whether this is a color or gray patch which I think confirms linearity.
    Seems I still have to find out whats so special with my sunset sky. Or, the hue preserving feature comes in mind which was reported to cover ACRs tone curve(s). Could it be that it acts 'on' the Exposure slider as well, once a single channel is driven into clipping, thus, preventing this. Just a thought.
    Many thanks for your comments.
    Peter

  • How do I change the size of my screen, in Develop Module, so that I can access the Exposure Slide in the right-hand colummn?

    The right-hand column, under the Develop Module, begins with the Histogram and directly under the Histogram, the Tone Curve is seen.  Missing is the Exposure Slide.  How do I change the size of the screen to show the Exposure Slide before the Tone Curve?

    Right-click (Cmd-click Mac) on the tone curve panel header or any of the other panel headers and make sure there is a checkmark for Basic.

  • Moving exposure slider Lightroom 5 causes losing sharpness in pictures.

    I'm working with (RAW files form 5dmk2) Lightroom 5 on OS X (i5 .2.6 gHz 16 GB RAM Intel HD Graphic 4000, NEC PA 271W display 27') . In Develop module moving exposure slider for a short moment causes loss of sharpnes in pictures, it's really annoying thing. In Lightroom 4  everything worked just fine. How can I fix this problem and keep working with LR5 ?

    I'm working with (RAW files form 5dmk2) Lightroom 5 on OS X (i5 .2.6 gHz 16 GB RAM Intel HD Graphic 4000, NEC PA 271W display 27') . In Develop module moving exposure slider for a short moment causes loss of sharpnes in pictures, it's really annoying thing. In Lightroom 4  everything worked just fine. How can I fix this problem and keep working with LR5 ?

  • Exposure slider makes photo darker

    I have seen this question asked a couple of times, but have not seen a solution.
    Whenever I so much as "touch" the exposure slider in the adjust panel (iPhoto 6.0.6), the photo gets darker. No change in the value of the slider -- it still reads zero. But the histogram shifts to the left and the picture becomes darker and appears to be more saturated -- too saturated, in my opinion.
    Are there any solutions to this?

    The solution is for Apple to fix the software.
    It may not help, but it might make you feel better - let Apple know about it.

  • HP TRUEVISION HD/YOUCAM WEBCAM: BLACK/DARK IMAGES. EXPOSURE SLIDE REVERTS BACK TO -9

    Hello,
    I use a HP Pavilion dv6 -  LK968EA Notebook PC with Windows 7 64-bit operating system.
    The Youcam 3.5 shows a BLACK screen. It worked perfectly when I first got the laptop last year, but all of a sudden, it just got dark. It shows a very faint dark silhouette when I am in the sun, and It does NOT show any image when I am under a halogen lamp or in a room flooded with 4 double fluorescent lamps.
    I have not touched the settings. But when I compared the settings with that of a friend’s, I saw that the exposure setting on his HP TrueVision HD/Youcam 3.5 was -2, while mine was -9.
    I moved it to -2, and nothing changed. So I clicked “apply” and “ok” and still NOTHING CHANGED.
    Someone said I should move the exposure slide to -2, tick “low light compensation” and tick “auto” next to the exposure slide, then just click only “ok”. I did ALL that and nothing happened. I repeated these steps and clicked “apply” and still NOTHING CHANGED.
    I ticked “auto-lighting” and still nothing happened.
    THE EXPOSURE SLIDE DOES NOT REMAIN AT -5 OR -2. IT KEEPS REVERTING BACK TO -9, EVEN THOUGH I ADJUST IT AND CLICK "APPLY" AND/OR "OK". AS SUCH THE IMAGE QUALITY IS STILL BLACK. Clicking "Auto-lighting" does NOT change anything.
    THAT IS THE PROBLEM.
    KINDLY PROVIDE ASSISTANCE ALONG THAT LINE.

    Exactly the same issue. The exposure setting won't change. It's not even that it doesn't save, as you look at the preview screen, all of the video proc amp setting change live, but when you get onto exposure, it does nothing. And then it doesn't save.
     So this issue has been floating around for about 3 years and nothing has come to light to fix it.

  • Exposure slider

    I'm shooting RAW with the camera (Canon 60D) exposure at 0 (no compensation).  When importing into LR3 (also not using any presets), the exposure slider is typically at +2 or above.  I thouht the LR exposure slider would also be at 0.  Why does this happen?

    Make sure that <Apply auto tone adjustments> in Preferences is unchecked.

  • Camera Raw exposure slider jumps back

    I´m desperate
    The exposure slider in camera raw always jumps back or forward to the nearly next full f-stop if I choose another slider!

    There has been a discussion of this in the Camera Raw forum that you might want to follow:
    "Exposure slider jumps back"  http://forums.adobe.com/thread/1326441?tstart=0

  • Exposure slider in raw converter

    THE exposure slider Goes to 0 everytime I touch another slider in ps cc RAW converter
    ( same problem in ps 6 ) one week ok than again same problem .

    I suggest first checking the PV2012 information at the two links I provided.
    Andrey Tarasevich wrote:
    So, with the old "Exposure" slider I had a semi-formal/mechanical method of adjusting exposure: just increase (or decrease) it to the point when there's no highlight clipping. But what would be the proper way to use "Exposure" slider in PV2012? How do I decide the "Exposure" setting now? Just by the look of the picture on the screen?
    Yes. As explained the PV2012 Exposure control is now primarily used to set the midtone exposure levels only. The Whites control is used to establish or change the White clipping point, and same for the Blacks control.
    If you want to get a visual picture of just how the PV2012 controls work on a raw image download this file:
    http://forums.adobe.com/message/4602370#4602370
    And here for information on differences between the Basic panel and Tone Curve controls:
    http://forums.adobe.com/message/4789422#4789422

  • ACR Blacks slider problem?

    Hi
    When i use the "Blacks" slider in ACR the darkest parts of the image "block up" and look very noisy. Unlike setting the black point or creating shadow clipping with the levels tool in PS, which gives a smooth effect, the black slider in camera raw seems to make the shadows crunchy and often with red pixels around the black ones.
    I use both PS5 and PS6 and on both programs i have the same "problem". I also have used ACR 6.2, 6.7, 7.0 and 7.2. All with the same effect.
    Up to ACR 7.0 the blacks slider had a range of 0-100 with the default being 5, and from 7.0 onward the slider can be set to either a plus or minus figure. In either version the default value often makes my shadows look pretty awful on screen. My question is - is this normal? In every book i read it says the blacks slider can be used ruthlessly to sett he black point but if i do that it creates a pretty blocked up result compared to the Levels black slider in PS.
    I shoot with a Canon EOS 5d mk2 and the RAW files appear to have quite noisy shadows when compared to the out of camera Jpegs which have silky smooth ones. Not sure if that is part of the problem?

    You have several issues swirling around...first off, the old Blacks slider in Process Version 2003/2010 is completely different than Process Version 2012. Yes, any Blacks moves in the earlier process versions tended to really clamp the Blacks...that is now considerably different in the new PV 2012.
    So, which do you want to learn how to use?
    The Blacks slider of PV 2012 is prolly the last slider you want to use in the tone controls in the Basic panel. If you use it too early, you are not taking an optimal approach to tone mapping. There are plenty of tutorial (Adobe TV) to learn how to use the PV 2012 adjustments...if you learn how to use PV 2012, I suspect your clamped Blacks issue will go away.
    As far as the noise in the shadows, the camera JPGs get a dose of noise reduction in-camera. In ACR/LR, luminance noise reduction is set to zero (no luminance noise reduction at all). This would explain why your JPGs seem smoother than the default rendering in ACR/LR. I suggest learning how to adjust the luminance noise reduction in ACR/LR to optimize the noise in your raw captures. Some decent tutorials out there for that too...

  • ACR 7 Slider in Batch Mode

    Eric:
    It would be very helpful if the Slider could be made much more clearly delineated and more visible in ACR 7.
    I am finding it very hard to see it at all at the moment!

    Pete:
    Thank you so much for picking-up on this issue.
    On the attached screen shot, you will notice that there is virtually no tonal difference between the Scroll slider itself and the background bar which it slides against so that it is very difficult to see the Slider.
    I suggest that the bar should be darker and the Slider brighter — with perhaps a drop-shadow effect as well?

  • LR 2.6 freezes when select gradient tool and then move exposure slider

    Often i lay down a gradient tool on an image then move to controls to adjust exposure, etc. Frequently I get the "spinning beach ball" and must force quit. No other problems.
    imac i7, 8GB ran, 10.6.3
    thanks for any suggestions.

    bump

  • Batch Processing HDR

    I've got to be making this unnecessarily hard...  Bridge CC, PSCC, LR5.x
    I've got a bunch of HDR sets, I want to process them into 32-bit files that LR will read (which as near as I can tell, means tiff).  I want to do them in large bunches, not one at a time.
    I"ve got Nik HDR Efex Pro, which doesn't appear to do batch.
    I've got Photomatix 4.2, which does batch but doesn't appear to save 32-bit tiffs in batch.
    HOW do I batch a bunch of sets and process them?  I"ve seen a script, but isn't there some built-in way of using batch processing or Image processing or SOMETHING more efficient?

      I THINK V5 of Photomatix may save 32-bit tiffs,
    No, not after tone mapping or fusion, you can set prefs to open the file as 32 bit and then save as floating pointing tiff, but honestly, I only looked at it once and since my (nor most or any at all) monitor can't show 32 bit colors properly I would not know what to do with it I'm afraid.
    But this option is also available in PP 4
    but unfortunately I have V4 and when I tried the free update to V5 it told me my V4 was an upgrade password, so even though V5 is a free upgrade apparently it's not free if you've already upgraded to V4….
    I had the same struggle but I believe this was due to having a to old license for version 4 (mine was almost 4 years old) for being entitled for a free upgrade. However they charge the very reasonable fee of $ 29,00 so I can't say they are to blame for this
    And at the moment HDR Efex Pro V2 isn't working at all with CC.  It crashes every time I try it.  Even doing the instasllation as instructed in other topics here say, it's not working.  I'll have to keep fiddling with it.
    There are some strange things happening with NIK (maybe the transition to Google has something to do with it, I remember iView Media Pro being screwed thoroughly by Microsoft after they bought it and changed it to Expression Media…).
    Never used NIK my self but both HDR Efex Pro 2 and/or Selective Tools are to my believe responsible for the rare ACR Exposure slider set back  in combination with OSX Mavericks. If you remove one of the aforementioned plug ins from the Google folder (previous called NIK) in the PSCC plug in folder the ACR bug is gone.

  • Exposure Curves in ACR

    Using ACR (CS3), I find that I can get decent expansion of dynamic range by using one raw file and creating 3 different files from it by varying the exposure setting: 1 under-, 1 over, and 1 normal exposure. Then of course those 3 files are composited in Photoshop using the usual techniques of either masking or the HDR plug in.
    But I would like to see an additional curves dialogue that affects exposure. Boosting shadows in ACR’s current tone curve dialogue does not, for example, bring out the hidden detail that really is present in the raw file. The affected areas will of course be brightned but flat, often monotone, while compositing 3 different files with differing exposure settings of that same raw file would bring out all the recorded detail.
    Does Adobe have plans to make an exposure curve dialoge box?
    Thanks

    The Exposure slider is indeed in stops (-4 to +4 EVs) but you will find that it isn't completely equivalent to changing the exposure in the camera due to other settings in ACR also coming into play, although you may be able to find a set of brightness/contrast/black-point/toning-curve/camera-calibration that come close.

  • Exposure Adjustment in ACR

    I am conducting some camera & lens tests and would like to hold the shutter speed at a constant and vary the exposure over an approximate 5 stop range of apertures. I'd like then to correct the exposures as closely as possible in ACR. Are the values shown for the exposure slider in stops or something other? In the end with respect to exposure, contrast and brightness I would like all of the images to very similar without repect to sharpness.

    The Exposure slider is indeed in stops (-4 to +4 EVs) but you will find that it isn't completely equivalent to changing the exposure in the camera due to other settings in ACR also coming into play, although you may be able to find a set of brightness/contrast/black-point/toning-curve/camera-calibration that come close.

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