Lightroom using Adobe Camera Raw Cache

Just noticed I have a lot of large files accumlating in C:\Documents and Settings\myusername\Local Settings\Application Data\Adobe\CameraRaw\Cache.
Is this normal? Should it clean out automatically (does not seem to be) or can the size be limited?
Appreciate any insight.
~Bob

Hi Bob,
SIze limit on the camera Raw cache file is controlled in the FIle Handling tab of the Lightroom Preferences (Lightroom|preferences). The default setting for LR 2.0 is 1 GB. BE aware that this setting is also controlled by any other Adobe application that supports Camera Raw (Photoshop CS3, Bridge, etc.). So, if it is changed to 4 GB in Bridge, it is 4 GB in LR. It is a cache used by the Camera Raw and it speeds up Camera Raw applications. When you have finished, you can purge the cache at any time by pressing the Purge Button in the same section that contains the maximum cache size.
Dave Huss

Similar Messages

Does Aperture use Adobe Camera Raw in any way?

Does Aperture use Adobe Camera Raw in any way? Is it important than I upgrade ACR if I do not use Photoshop?
Jerry

Thanks for the relies, guys!
I suspected that there was no connection between Aperture and ACR, but wanted confimation of that fact. You've answered my question.
Thanks again,
Jerry

Lightroom 3 and Adobe Camera Raw cache files

Lately in: User/Library/Caches/Adobe Camera Raw I've been getting tons of (cache0000019858.dat) " just an example of one of the many files"
Are thes related to Lightroom 3?
What are they and can they be deleted or moved to another drive?
I primarly use this computer only for Lightroom 3.
Thanks
David Morris

JS4653 wrote:
If you change this location will it move the files from the pre-existing location to the new one?
The question also applies to LR4, which si what I'm using.
If you mean does it move the files in the cache - I don't know, but I doubt it and it doesn't really matter. It will just use the new cache location, so will be a bit slower until it builds up the cache (and it might leave a load of stranded garbage in the old location, so probably a good idea to purge the cache before changing the location, or delete the old one manually).

Curious question about Lightroom previews and Camera Raw Cache

Posted in the Flickr Lightroom Group as well:
I have noticed something about the Lightroom (3.6) previews and Camera Raw cache that have me puzzled.
I create a brand new empty catalog and purge the Camera Raw Cache.
Then I import ONE Nikon RAW (NEF) file with dimensions 2592 x 3872 (10 megapixels - 10,036,224 pixels).
Next I export that NEF file to an uncompressed 8-bit TIFF file. You would expect the size of that TIFF file to be roughly 30 megabytes (10 megapixels x 3 bytes per RGB value) and in fact the TIFF file is 30,135,830 bytes in size. If you export the same TIFF file but specify ZIP compression the resulting file size is 10,834,038 bytes. Obviously the compression obtained here is going to be highly specific to the image but so far no surprises.
During import I specify render 1:1 previews and I go into Loupe mode and view the entire image at 1:1 size. I also visit the develop module and do a bunch of manipulations on the image but no cropping.
At the conclusion of all of that I exit from Lightroom and examine the size of the Camera Raw Cache folder as well as the Lightroom previews folder. It would be my expectation that the previews folder should have a rendered full image and that the Camera Raw Cache should also have a rendered form of the raw data. What would you expect the size of those respective folders to be?
In fact - in my trials the previews folder totals a mere 1,675,264 bytes and the Camera Raw Cache which contains one DAT file corresponding to the one cached image is merely 267,374 bytes. This does not seem like nearly enough bits to preserve the rendered image nor is there a full size image tucked away in the actual catalog either - that file is not large enough to contain that. And yet I can use Loupe mode at 1:1 size and move from image to image with no loading delays (even when importing multiple files).
I'm wondering if I've missed something obvious in my analysis and if not, whether someone might care to speculate as to what magic Adobe is practicing here. Even if we grant them some special algorithm to compress their previews I don't see how they can achieve a compression so much greater than the ZIP-compressed TIFF file achieves.
And for those that might think to ask - I've repeated these experiments with multiple raw images and on both the PC and MAC platforms.
I look forward to some answers or interesting theories or perhaps someone might replicate the experiment and report findings.

MadMan and Hal - thanks so much.
So that was my D'Oh moment of what I was missing - the use of re-rendered JPGS as previews. That certainly does fit with the file sizes I am seeing. I had naively assumed that the previews might have tried to preserve the full fidelity of the image - But as you suggest that full fidelity is likely only there in the develop module.
This perhaps explains another observation from the Develop module - moving from one image to another might display "Loading" either briefly or across a longer duration. My guess is that the length of the loading process might have to do more with what is cached in RAM than cached on disk in the camera raw cache. More of a shame then that 64-bit Lightroom on 64-Bit Windows cannot grab more RAM than it seems to do at present.

Using Adobe Camera Raw as External Editor

I've recently purchased Aperture 2.1 and am very pleased with everything thus far. I capture the majority of my photos in the RAW format (Nikon NEF specifically), and the one thing I'm trying to work out is this - with iPhoto I am able to choose Adobe Photoshop as my 'External Editor,' and when opening an image for adjustments, iPhoto sends the the picture in its native format. Consequently, RAW formatted images open with the Adobe Camera RAW plug-in, jpegs right into Photoshop and so on. With Aperture I notice that I am still able to select Photoshop as my 'External Editor,' but instead of sending the native format, Aperture allows only the 'temporary' format options of TIFF and PSD (8 and 16-bit). Needless to say, the files open directly into Photoshop -instead of the Camera RAW plug-in that I would prefer for my RAW files. Does anyone know of any work-arounds or possible solutions to this issue?

iPhoto has no RAW conversion controls, but just makes a copy of the file for iPhoto edits.
When you choose to edit it in photoshop, it sends the original over to Adobe Camera RAW. This is NOT a non-destructive workflow.
Aperture has its own RAW converter- a quite good one- so the need for ACR is removed, and the workflow IS non-destructive. You should only be going to Photoshop for the things that Aperture is not designed to do like compositing and hi-end retouching
The only work around is to export the master then open it in ACR, but that workflow would be senseless.
Honestly, if you prefer ACR, then you should be using Bridge or Lightroom for DAM as well.
DLS

Deleting Cache in Adobe Camera Raw from Library

Hi There ~
I've seen similar questions, but not a definitive answer....
Currently, in on my Macbook Pro, my:
Users --> Lv4Tunes --> Library --> Caches --> Adobe Camera Raw folder is at 85g.
My Hard drive is only 200 gb..and I am almost at capacity.
My Lightroom library lives on an external hard drive, and my back up of that library is on another external hard drive.
Can I delete ths Adobe Camera Raw cache without losing any data?
Thanks in advance for the information, it is appreciated.

The safest way to do it would be to purge the ACR cache and set its limit to a lower amount of disk space in preferences:
This will cause some minor slow down in Develop in the beginning, otherwise no impact. A reasonable size depends on the size of your images, but generally a size of 20-50GB is recommended.
Beat Gossweiler
Switzerland

Adobe Camera RAW and Lightroom?

Can I use Adobe Camera RAW in conjunction with Lightroom?

LR can send an image (or images) from LR to Photoshop by rendering them in ACR.
Sure, it can subcontract the job and passing images to HDR within PS is an Adobe-scripted example of that. However it is AFAICT an arbitrary design decision, that it must be ACR which performs the conversion in these interactions; rather than (as various third-party utilities already do) getting LR to do this part via external files.
IOW, it is only on the basis that ACR is now expected to do, what we already know LR has the ability to do, that version incompatibility arises as a problem.
Let me explain: say I want to blend bracketed exposures together. I have a current version of LR but an older version of PS. The "Edit in.." options are therefore constrained; I cannot, as I could have done with say LR3.x and the same PS version, pass a bunch of images directly.
However, I do have the LR "plugin" (potentially misleading terminology IMO) LR/Enfuse installed. This lets me seamlessly select a bunch of images, interact with external processing which merges these into a single new image (in this case the interaction precedes the making of the rendered copies, but this could be in another order), and then view a resulting image auto-imported into the right place in my LR Catalog; and know that the extra intermediate files which this process requires (as the PS method does not) have been deleted for me.
This is functionally different but in its outcome, equivalent to what using Photomerge would have got me. The difference is that ACR incompatibility has been simply circumvented.
Might there not be an argument (inducements to upgrade PS for other reasons left aside) for Adobe facilitating the use of otherwise perfectly usable older PS versions together with LR, by this kind of route? Harnessing the two horses to the wagon separately, rather than under a single yoke? Providing a scripted "pass multiple images into Photoshop" LR export-based plugin, akin to what LR/Enfuse does?
I suspect there will be a lot of people who in the past have upgraded PS infrequently, and not planning to upgrade every single version going forward, who are currently re-considering their position about PS in view of the announced change of upgrade qualification.
Lightroom only gets stronger the more ways you can use it with other software, and while a "forced" upgrade of PS merely due to ACR considerations may be tolerated when ACR is central to your workflow, this is more likely to be resented when it is LR which is central, and the ACR question intrudes only peripherally. In that case people may settle unhappily for some clunky workaround (toward which Adobe have simply been unhelpful, in their insistence on ACR parity as the sole solution).

Adobe Camera Raw changes not reflecting in Premiere Pro

I was super excited to try out the new CNDG support in Premiere Pro CC 2014, but I have to be honest - I am a bit disappointed...
I am using 16bit Cinema DNG files and the source settings sliders really aren't doing it for me (notice the pink highlights)
That's alright though, I would much rather use Adobe Camera Raw!
Right click > Edit Original
There we go, that looks nice - no pink highlights, nicely recovered details in the shadows and highlights.
PERFECT, click DONE!
Nothing...For whatever reason, changes are not reflecting.
Adobe - please allow us to use Adobe Camera Raw, there are so many folks out there that want to incorporate it into their workflow. I have tried SpeedGrade and various other color correcting tools and I have found Adobe Camera Raw to work the best IMHO
Thank you for your time.
-Loyal Paying Customer

Hi Ekombokom,
ekombokom wrote:
Hello! I too am having this same problem. I used Camera Raw (both in Bridge and Photoshop to make sure) to adjust and correct the Cinema DNG files I shot with my BMPCC; however, the video sequence in Premiere does not reflect any of the changes made. Why would Adobe not support Camera Raw settings in Premiere?
Sorry, but Premiere Pro does not have a camera raw importer. You adjust the settings in the Source Settings dialog box instead (for RED, ARRI Raw, BMCC and BM Pocket Camera DNG files). You do have access to some controls for these formats, but in some cases, Camera Raw has more controls.
ekombokom wrote:
Camera Raw is an amazing tool for refining an image and gives me the best results compared to SG and Davinci. I was so excited to be able to use it once Premiere supported CinemaDNGs but now I'm confused as to why it's not supported.
Cinema DNG from the Blackmagic Cameras are supported, you just adjust settings in Source Settings, as I mentioned. Have you tried that? The reasoning behind this is that Cinema DNG video coming from camera raw is too difficult to playback and edit with.
That said, some users bring Cinema DNG footage to After Effects, adjust the video there, then render out files that are suitable to edit with.
ekombokom wrote:
I thought the point of using Adobe was that all their products worked together seamlessly? I really hope they fix this.
You can always make a request here: http://adobe.ly/feature_request, however, I don't see a camera raw importer going into Premiere Pro any time soon (if ever) because of the reasons I previously mentioned (editing with camera raw would be too cumbersome). I think the more realistic feature request would be to add more controls in Source Settings.
Thanks,
Kevin

Adobe Camera Raw

Hello:
I'm using Elements 9. I use a Nikon D5100 and I shoot in RAW. The file extension for RAW Nikon photos is .NEF.
I'm trying to open the photo in Elements and I'm unable because it's an incorrect file format. Apparently I need to use Adobe Camera Raw to read these files. I thought that Camera Raw came installed with Elements.
How do I access Camera Raw?
Thank you.

You'll need the ACR version 6.4, at least. Use Help...Updates to install the latest ACR (6.5) supported in PSE9. If that fails, use this link to download the file:
http://www.adobe.com/support/downloads/product.jsp?product=106&platform=Windows&promoid=HT ENB
Ken

Selection in Aperture , processing in ACR ( Adobe Camera Raw )

I'm trying to figure out if there is some way to see my ratings from Aperture in finder - on original master files.
I understand "holy raw" policy and I have been following the threads about painfull renaming techniques
( obvious workarounds ).
Seeing my in Aperture rated raw files in finder is crucial for me because I want to use Adobe Camera Raw for processing .
I might also use DPP or Capture One for this in some situations.
(I prefere Aperture for selection work , I love loupe )
So is there som simple way to do it ?
One way would be for example if you could give a
color label ( visible in finder ) to selected master files .
That would be fine for me .
And as I understand wouldn't make any changes to the original file ( so it would stay "untouched" ).
Thanks for any suggestions.

Just re-read your first post and realised that you want to apply a Finder label to every RAW file based on rating. This is doable, but would require someone to write an app or script, like Adam Tow's app that moves metadata between Aperture and iView.
The rating for each image is held in the OriginalVersionInfo.apversion file next to each RAW file:
<key>mainRating</key>
<integer>0</integer>
If you are only grading into two categories and Bridge is doing what you want, then there is no reason not to use Bridge, it's likely to be faster for you, which is the main thing.
Time - setting up a hot folder takes about ten minutes, and I'd never done one before. On the other hand I know my way around Automator etc., as should anyone dealing with large numbers of images. Most of the extra steps are to bring the converted file back into Aperture, automatically linked with the RAW file as a version.
Here's to hoping that the conversion quality gets better fast!
Ian

Adobe Camera Raw (ACR), Jpeg Files and Metadata

I have been using Adobe Camera Raw (ACR) with my Canon EOS 30D, an 8 MP camera, for a while now. I would make non-destructive changes to the raw file (.CR2) in ACR where the changes would be stored in an adjoining .xmp file. Jpegs of the unedited and edited camera raw files would be created so I have a before and after versions of the images that can be viewed anywhere.
Now I have a Canon EOS 5D Mark III, a 22 MP camera and the raw files are much larger. I’m looking at using camera raw on jpeg files for some for my more casual photo shoots in order to save disk space. From what I have read, I can use ACR on jpeg files and that the changes would be stored in the metadata in the jpeg file. Is there a way for the changes to be stored in an adjoining .xmp file so that the original jpeg file is not modified, much like it is done with the .CR2 files?
I am using Adobe Photoshop CS5 on a Windows 7 machine. All software is up-to-date.
Also, I have found that Adobe’s camera raw handing is different than the raw handling of the photos using Canon’s software (DPP). Is there a way to make ACR closer to what Canon’s software does?
Thanks,
Mike

Probably not going to happen.
I agree, Canon's color is better than Adobe's in general - I just didn't know how good the Camera Standard profile might be for your particular camera. I had hoped maybe they'd made it a very close match.
Some time ago I got a very nice genius-level Camera Raw forum member named Vit to make me a custom profile that exactly matches the Canon color for my 40D, even to the point of emulating the way Canon fits the entire gamut of the captured image into the sRGB color space, so I'm more than happy.
Others might tell you that you're silly for wanting the color to match, but I understand completely your position - if you do get that kind of feedback just ignore it and push on.
Once you've set up a default to use Camera Standard, you may well be able to tweak the dozens of color controls to bring the Adobe default into line with the Canon color. I did that once before getting my special 40D profile, comparing embedded raw file JPEGs with the Camera Raw preview display with a variety of images - it was tedious but effective.
Best of luck.
-Noel

Adobe Camera RAW 6.7 Windows 7 Crashing etc...

Good Afternoon,
We are using Adobe Camera RAW 6.7 on Windows 7 32bit devices. We have had reports that it seems to be unstable and crashes or that they loose the view window and have to restart it to get it back.
There also seems to be no way of viewing RAW files prior to opening them in the RAW plugin, making the process a bit hit and miss. They should be able to open the files containing the RAW files, in the Bridge and preview before editing them in Photoshop. A temporary but not really usable workarround is that they open them through Photoshop, which gives you a postage stamp size preview, which is not really very usefull.
Has anyone come accross this before in this version of RAW and discovered a fix for it?
Any advice is much appreciated.
Regards
Jo

Hi Eric,
Sorry for the delay in getting back to you, the two camera types are:
Cannon PowerShot G1X
Cannon 5D Mark 3
The user has advised this version of Camera Raw and the same camera models were used on XP it is just since the upgrade to Win 7 - is there any known compatibility issues with this version of RAW with Win7?
Thanks
Jo

Adobe Camera Raw - JPEGS - Do Not Auto Refresh

I use Adobe Camera Raw to edit my Jpegs. From my understanding, Jpeg editing in ACR is supposed to be DESTRUCTIVE - I do not see a sidecar XMP file created when I edit JPEGS.
However, the edits I make to JPEGs in ACR do not show up on the actual JPEG file.
As an example here are the steps I take.
1) Right click on a JPEG and say "Open in Camera Raw"
2) Desaturate the image so that it is totally black and white
3) Click done - when I do this I notice that the image within the Adobe Bridge Browser is now in Black and White
4) At this point, I want to verify that the actual image has been converted to Black and White. So I close down Adobe Bridge entirely. Then I navigate to the same directory using Windows Explorer (standard system file browser).
5) My expectation is to see the same image with my ACR edits (i.e. Black and White). However, the image is still in color.
I have placed 2 screenshots online at
http://www.trick-photography.com/acr/Screenshot1.JPG
(Adobe Bridge after ACR edits)
and
http://www.trick-photography.com/acr/Screenshot2.JPG (Windows Explorer)
As you can see the image in Adobe Bridge is Black-and-White. However the actual image is not altered. I have tried to refresh thumbnails and images in both Adobe Bridge and Windows Explorer and that does not work.
In order to see my edits, I have to open the image in ACR and save it to a new folder. This takes lots of time, and I do not think this is the right way because JPEG editing is supposed to be DESTRUCTIVE in ACR.

Guess I have a different understanding. When you make an edit in ACR and click Done the original image is not modified, but the edits are retained. There is a round symbol placed in upper right corner that says the image has been modified, but the thumbnail displays the original image. If you open the image the modified version will display in ACR, and you can choose to open as is or modify further. So far this edit has been non-destructive.
However, when you make an edit in ACR and click Save Image the original image is modified and saved with new name and location of your choice. The thumbnail displays the modified image. This has been a destructive edit. I think this is the step you are looking for.

Lightroom 1.1 - Adobe Camera RAW 4.1 (Bridge, Photoshop CS3) problem

Dear all,
I am having some problems with the appearance of files developed in adobe lightroom 1.1 or in adobe camera raw 4.1 from e.g. bridge or photoshop cs3. When developing in lightroom the images look great, however when using acr 4.1 and the same xmp sidecar settings imported from lightroom, the image in acr looks very pale in comparison. For example when using the export into photoshop option in Lightroom, the image in PS3 looks very pale to the one in lightroom. The same problem persists with developing using ACR 4.1 from bridge. I have turned autotoning in ACR off. Also in the color management of PS CS3, the desaturate checkbox is UNchecked.
I am using an icc profile for my 30" cinema display, calibrated with colory eyes pro and a spyder2.
Has anybody had similar problems with ACR 4.1 or am I just doing something horribly simple wrong?
Thanks for your help!
Immanuel

Thomas,
thanks for your reply. In Mac OS X Preview the images look all good and very much like what I see in Lightroom. In any case not as pale or like with a slight white overcast to what I see when using ACR 4.1 from Bridge or Photoshop CS3. In PS color settings, preserving embedded profiles is checked. Yes, it seems to me as well that this is some color management issue. The 30" Cinema display was calibrated using Color Eyes Pro and Spyder2 to Gamma 2.2 and 6500 temp. However, even when reverting to the standard Apple color profile for the monitor, the problem persists.
No luck so far...
Immanuel

I am unable to open raw files from my Canon T1i in Adobe Camera Raw of my version CS3 of Photoshop. I have tried to update my ACR by downloading version 4.6 from the Adobe website but I am still unable to open raw files, just JPEG. Is there a way to use

I am unable to open raw files taken on my Canon Rebel T1i in my version of Photoshop CS3. When I import raw files into Bridge they come up as patches with CR2 on them and when clicked on, a notice comes up stating that Photoshop does not recognize these files. I tried to update my Adobe Camera Raw by downloading version 4.6 from the Adobe Website, but when I clicked on the plus-in, I got another message that Photoshop does not recognize this file. I spoke with a representative from Canon who said that I could not update CS3 and that I should subscribe to the Cloud. I would prefer to use my CS3, if possible. Can anyone advise me what to do?

The T1i was first supported by Camera Raw 5.4 which is only compatible with CS4 and later
Camera Raw plug-in | Supported cameras
Camera Raw-compatible Adobe applications
Some options:
Upgrade to CS6
Join the Cloud
Download the free Adobe DNG converter, convert all T1i Raw files to DNGs then edit the DNGs in CS3
Camera raw, DNG | Adobe Photoshop CC

Lightroom using Adobe Camera Raw Cache

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