Rendering: Larger Preview.... Stalls in Library Module.

I am running Lightroom 2.4 on a Windows Vista system. I have found recently that when I use the library module and attempt to zoom in on a picture in that module the full size picture on screen reverts to a highly pixalated view (presumably the embeded low res jpeg from the Nikon RAW file) and I get the message "Rendering: Larger Preview..." and nothing at all happens. If I then select the develop module the picture renders correctly, if following this I select the library module again all used to be well but now I get the message "Rendering:Develop..." and again nothing happening.
Has anyone encountered this problem and discovered a solution?

John
Thanks for the input. The problem certainly happens then but I am getting
it other times as well. I found some advice on the forum about the problem
which suggests it is associated with MS Vista's complex file access
permision system. It appears you have to give all users read write and
execute permission on all your Lightroom files. I am trying that to see if
it solves the problem.
Thanks again
Dave

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Lightroom pictures blurred in Library module - Rendering: Larger Preview...?

I am using the latest version of Lightroom running on a system using Vista Ultimate 64bit OS, an Intel Core i7 processor, 12 Gb of ram and two nVidia GTX295 video cards. I problem that I am having is in the Library module, where, when I move from picture to picture, some pictures, at random, will load blurred. The caption, in the lower center of the picture starts with "Loading from Previews" then goes to "Rendering: Larger Preview," and it stays there. I can move to another picture which may or may not load properly. This issue does not seem to affect the Develop module; pictures which load blurred in the library mode are crisp and clear in the Design module.
I did not have this problem running Windows XP!
Any suggestions to address this issue?
p.s. I have read a previous thread which suggested that deleting the preference file might be a solution. I have done this, without success!
jwp

My suggestions would be to backup and check the integrity of your catalog, to render standard previews for all images, and if necessary to delete the previews file and directory.

Lightroom 3 Large previews are soft...

Last Year I posted on this forum how on my Mac with Lightroom 3 I was getting soft previews of photo's, well here we are a year later and I still cant use lightroom in my workflow because of this soft preview issue, It's pissing me off to no end.
When viewing my 5D mkII raw files...and other camera model raw files, in the Library & Develop modules, the large preview image in both modules gives a slightly blurry rendering of the photo, if I zoom to 100% I can see the file's actuall sharpness, but I need to be able to run through thousands of files from a shoot and quickly pick out the sharp images from the misfocused one's, which is impossible with this issue.
So now a year later I'm inquiring again to you on this forum and Adobe technicians to help me resolve this issue once and for all.
P.S. For the record, this issue has been here from the day I installed LR3.
My hardware: 2009 Mac Pro with 12GB of Ram, Eizo CE240W 24" Display at 1920X1200.
From what I gather this is a known issue, but reading the below link/posts, I've not found a solution… http://forums.adobe.com/message/3009930#3009930
Thanks, looking forward to your thoughts.

Hi, I have exactly the same issue in LR3, this was not happening in previous version of LR.
When I import picture into LR, I also build "standart previews", which leads to slight soft preview when reviewing picture in the library module (going to the develop module does not help here). Zooming to 100%, waiting for the full rendering then zooming back solve the issue for the current photo. This seems to happen on random pictures since even if I worked on the picture, viewed it at 100% in a previous Lightroom session, it just render it blurry.
Here is a sample showing the issue, the first link show a screenshot just before I zoom at 100%, the second link, just after:
Screen shot before zoom
Screen shot after zoom
It also happen with more modest picture size on the screen (when all panels are shown).
So, it seems like there is a bug somewhere in LR preview rendering.
Cheers,
Philippe.
Edit: open links in new browser tab or windows: the image viewer of the Adobe forums show only a reduced version of the screenshots behind the previous links.

All of a sudden LR won't render larger preview.

Today after using LR sucessfully for some time it won't render larger previews, in the library mode, of images in my catalog which were downloaded by another computer. The images turn extreemly blurry and will not come out of it. I restarted windows vista and optimized LR. Any suggestions?

The images will have a ? on the badge when they're offline and you're looking in grid mode. Are they offline?
If so, and you bring them back on, you can create 1:1 previews, but won't be able to edit.

Specific Problem with Library Module 1:1 Preview Loading

Hi everyone. I've spent hours searching Google & forums for specific tips to try but I've found nothing that solved my problem. I have a very specific problem loading 1:1 previews in Lightroom 3.3 while zoomed to 1:1.
When I initially import a shoot (usually 3000 to 6000 images), I always render 1:1 previews during import. My understanding is that this activity writes full-sized previews to the "Previews" folder, but I also have observed that .DAT files are created in the "Camera Raw Cache" folder. I have my Lightroom Previews folder and my Adobe Camera Raw Cache folder on the **same** solid-state hard disk, which is dedicated to Lightroom.
When I browse these newly-imported images in the Library module in Loupe view at 1:1 zoom, it's very zippy and fast to switch between images. The images load without any message at a lower resolution, and then "snap" to full resolution after 0.25 to 0.5 seconds. No "Loading" message appears.
However, once the previews have "sat around for a while", even if they are still supposedly available in the Previews folder, loading the image at 1:1 in Loupe as described takes 3-5 seconds. Shortly after going to an image, the message "Loading..." is displayed (it doesn't say where from), and 3-5 seconds later, the full res image appears.
This has nothing to do with changes to image settings requiring re-rendering of the preview. These are images that I've imported but haven't browsed in a while. I know that the previews are valid, because I can go to "Library > Previews > Render 1:1 Previews", and the task will complete within 20 or 30 seconds without re-rendering any photos after examining them and apparently finding that there are still valid 1:1 previews for all 4000 of them. After doing this "re-render," the slow loading behavior is the same as before, because the re-render process always completes without actually updating the previews that it found are already there and presumably decided were still valid. Discarding previews by "Library > Previews > Discard 1:1 Previews" and then trying to re-render them also does nothing, because LR3 apparently doesn't immediately delete the discarded previews, so they are picked back up again As-Is by the re-rendering process.
If I had to guess at the reason for this behavior based on the symptoms, I would say that it seems like Lightroom is forcing itself to re-render 1:1 previews upon browsing to images that are older than a certain age (very possibly the same "30 days" after which the 1:1 previews are supposed to be discarded).
Now, I've also observed that deleting the DAT files in the Camera Raw Cache folder has no adverse impact on load speed (which is what I would have expected to see if LR3 was looking for and loading images from this cache instead of the Previews folder).
What this means to me is that once the image previews reach this "outdated" state, I can't get fast 1:1 browsing performance in Loupe with any reliable procedure other than manually deleting [in Windows Explorer] the entire Preview folder and then re-rendering the 1:1 previews for this shoot. This is of course terribly inconvenient when there are recent previews that I want to save.
Note: I do not have any slowness under any circumstance when browsing at "Zoom to Fit". This is only a problem when I'm browsing at 1:1 zoom (like when I'm comparing sharpness between a set of photos).
Note: For images with the slow behavior described, once the image has been loaded once at 1:1 zoom, it's henceforth snappy again when returning to the image (as if Lightroom was once again accepting the Preview file as valid).
So, here's a summary:
Previews (X:\Lightroom Catalog Previews\) and Camera Raw Cache (X:\Lightroom Cache\) are on same, dedicated, fast drive
1:1 previews from recently-imported files load full-res at 1:1 zoom in less than 1/2 second.
Older 1:1 previews take 3-5 seconds to load full-res at 1:1 zoom, even though the previews are supposedly being loaded from still-valid 1:1 previews in the Previews folder.
I'm really tired, so i hope this makes sense. I don't see how this could be a hardware problem, because I get good performance with recently-imported images. I'm running LR3.3 on Win 7 Pro x64 with 8 GB of RAM and a 2.4 GHz Intel Core2 Quad CPU. Never had LR3 beta installed - upgraded to 3.0 from the last 2.X version. After upgrading, in response to this exact issue, I deleted my entire previews folder and rebuilt, but I continue to have the exact same problem on every shoot that I import. It's most noticeable on the large shoots, because I end up having to browse at 1:1 zoom to compare a set of similar images.
Only workaround I've found: in Windows Explorer, manually delete the Previews folder. Return to Lightroom and rebuild 1:1 previews. This forces the previews to be rebuilt for all images.
Another possible workaround I am going to experiment with: setting the Previews to "Do Not Discard", in case the defualt "Discard after 30 days" that I've used is causing or contributing to the problem. If Lightroom is actually discarding the images after 30 days but forgetting that it had discarded them when asked to re-render 1:1's, maybe setting to "Do not discard" will bandage that problem by never discarding them to begin with.
All right, I'm falling asleep at the keyboard. I'm afraid to add more details as they may become incoherent. Hope to hear some good news, as fixing this problem would make my LR3 experience so much more pleasant.
Can anyone assist with this problem?
- Tyson

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Ian Lyons wrote:
The behaviour after previews have been around for a while (i.e. previews for unedited images) is not normal. There have been a few other reports of similar behaviour, but no real clues as to why it happens.
Yes - this is my problem. Previews should still be valid, and "Library > Previews > Render 1:1 Previews" says the images are still valid, but then Loupe rebuilds them anyways.
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Ian Lyons wrote:
If everything was working correctly, the setting for discard shouldn't have any effect on whether the previews go stale or not. ...
My understanding is that if everything were working as intended, the "setting for discard" that I was referring to (Edit > Catalog Settings > File Handling > "Automatically Discard 1:1 Previews") should be the sole determinant of whether 1:1 previews must be rebuilt for images with unmodified settings.
For example, if I import an image and render a 1:1 preview, and if I set the "Auto Discard 1:1" setting to "30 Days", and if I make no changes to the image's settings, then I would expect that the image should render quickly (under 1/2 second) at 1:1 zoom in Loupe view for the next 30 days. On the 31st day, I would expect the image to take longer to load as a new 1:1 preview was rendered and stored, and then I would expect this new preview to be retained for another 30 days.
I would furthermore expect that the 30-day counter would be reset every time the image was re-rendered (i.e. if I go into Develop and change something).
To a certain extent, this is functioning correctly on my system. When I go to one of these "problem images" that inexplicably load slowly, returning to them subsequently is quick. I think my problem is just, as Rob suggested, that some part of Lightroom's "brain" has wacky ideas about whether an up-to-date 1:1 preview exists or not.
If I choose to "Never" automatically discard 1:1 previews (which is what I just switched to), then I should "Never" see unmodified images taking 3-5 seconds to "Load" at 1:1 zoom in Loupe.
Since I just nuked my Previews folder again last night and re-rendered 1:1's overnight for a 3000 image shoot, it might be a while before I start encountering this bug again. I will certainly post any further related experiences here and will keep checking for anyone who has further insight.
function(){return A.apply(null,[this].concat($A(arguments)))}
Ian Lyons wrote:
...we know that Lr3.4 RC fixed the manual discard bug, so, if I were you I would focus any further tests on Lr3.4RC.
Thanks for pointing this out. I will upgrade to 3.4RC - at least then I will be able to force a rebuild of previews from one shoot without having to manually delete the previews for my entire catalog. I'll no longer have to throw out all the food in the refrigerator just because something smells funny.
function(){return A.apply(null,[this].concat($A(arguments)))}
Ian Lyons wrote:
The DAT files are created at the same time as Library previews. However, they are only used in Develop module.
Yes, I definitely agree with this (although, the Cache is probably also used while rendering new previews after "Quick Develop" changes in the Library module....). I posted my observations to this effect just in case someone else wondered the same thing I did. It is clear that the DAT files get written every time a preview is rendered for RAW file. Rob, now that I'm thinking with a clearer mind, I think the only thing these Cached files are used for is if you "return" to recently rendered settings in Develop or Quick Develop - then, that particular combination of settings yields a match in the cache, and LR loads the image from the Cache into Previews and onto the screen. It is logical that the cache wouldn't help us when going to new settings, because the new settings would create a partially or completely different rendering than any other combination of settings. Adobe may be going to more advanced levels of "reusability" than this, but I'm sure this is the general state of things.
You may want to open back up write access to that Cache folder...
Thanks, Rob & Ian!
So, my question, or bug report, still remains for now - why am I biting into a bag of chips marked "Fresh" and finding them Stale? And why does it say "Paper Jam" when there is no paper jam?

LR5 Fill mode preview in Library module is not sharp

Hi,
I just discovered, that when in Library module, and viewing my photos in Fill mode, it is not sharp. It is in fact so blurry, that it is unusable. Not sure I remember it correctly, but it happened also during the tethered shooting and viewing image on secondary monitor.
Interesting thing is, that once in a Develop module, Fill mode preview is sharp. I tried different settings re preview in Catalog Settings and Preferences, but no success.
I would like to know, if other users are experiencing anything like that too? Googling I found several such problems described in the past. I wonder, why this apparent bug was not fixed ages ago ...
Thanks,
Petr

Hi, so I did so, no change. Now let's not talk about the difference between Develop and Library modules, but about Library module itself. Why all other previews, e.g. 1:4, 1:2, 1:1 are sharp, Fit mode is sharp, but Fill mode is not? Is there any internal difference to how Fill mode works? I insert the photo here for you to see the difference:

Slow performance LR 1.3.1 (Library Module)

LR 1.2 is running OK on my iMac. A while ago I tried LR 1.3. The upgrade really slowed down performance. Mostly a lag in the sliders and navigation tools in both Library and Develop modules that made it unworkable to me. I changed back to LR 1.2.
Since I want to import Canon G9 RAW files into LR, I upgraded to LR 1.3.1 recently. Performance of sliders and the navigation tool in the Develop module seems the same as in LR 1.2 (or maybe even a little better). Which means it is OK (workable). It still shows the blur when navigating a 100% zoomed image though. But the navigation tool in the Library module still has the same slow performance as it had in LR 1.3. Unworkable!!! I tried everything: optimizing, new catalog, rendering previews, etc.
I need the Library module to work smoothly (as in LR 1.2) in order to compare images at 100% zoom. I am afraid I have to go back to LR 1.2 again and find another solution for my Canon G9 RAW files. Most inconvenient. I am very disappointed. Especially, since Adobe showed they CAN get it right with the Develop module in version LR 1.3.1...
Oh yeah, my system specs:
iMac 2.16 GHz Intel Core 2 Duo
3GB 667 Mhz DDR2 SDRAM (2GB + 1GB)
232,89 GB Harddrive, 113 GB available
ATI Radeon X1600 128MB
Mac OS 10.4.11
Please Adobe, make the Library module run as smoothly as the Develop module in version 1.3.2...

The preview folder is 2,11 GB big. The .lrcat is 47 MB big.
I opened a new test catalog. I imported 326 images. After the import I rendered 1:1 previews. It took a long time. Real memory used was between 700-1000MB. Virtual memory used was between 1000-1400MB. When it was done rendering it still keep on using 700MB real memory and 1000MB virtual memory. I had to close LR and restart. Real memory after restart was 75MB real memory and 375 virtual memory.
But it didn't matter. The lag in the navigation tool of the Library module was still there.
I noticed that when clicking in the navigation window there was less delay as when I slide the white square in the window (in Library module). In the develop module this seems the other way around. Sliding showed less delay than clicking.
What's going on here?
I also have a MacBook. Performance seems much faster than on my iMac overall. After creating a new catalog and rendering 1:1 previews, the lag in the navigation window seems less than before. But it was still there...

Develop settings not showing up in library module view of image

Hi there
A quick question about an issue I have not seen before. Imported a raw image .cr2 file from a Canon S95. Opened develop module and applied clarity, vibrance and sauration adjustements. Clicked back to Library module and the adjustments have not been made. Clicked back to Develop and they are there. Have tried closing LR5 and reopening - the image adjustments are still visibile in Develop, but not in Library. Any thoughts? Is this a software issue or a hardware issue (have just upgraded from LR4). Thanks in advance.

Hi Lee - I'll keep LR running for a while to see what happens. I did notice that when I did the import of the image, the thumbnails of the images from the SD card were not immediately rendered. it was possible to see the images by clicking on each one. When I had previewed each image individually, the thumbnails were visible. I suppose its possible that my hardware is running very slowly as welll.
Thanks
Chris

Images in library module aren't as sharp compared to develop module.

For some reason images in the library module aren’t as sharp compared to the develop module. If I’m in develop images are nice and sharp but as soon as I select the library you can see the image quality drop and image becomes less blurry!
I’ve had a look on here and other people have this issue and I’ve tried the various fixes suggested with no success at all.

It sounds like the library module is using a lower quality preview. If you are using minimal or embedded previews, they could look different than what you saw in the Develop module. Do other changes you make seem to be in the preview, just lower quality? Like if you applied a heavy vingette, do you see the that in the preview? If you don't, that could mean LR isn't updating the previews it uses in the Library module and you might want to look and purging your cache. If you do, try rendering a 1:1 preview for the image and see if the preview looks better.
Another thing to check is to make sure your standard preview size is appropriate for the size of your monitor. If you've got a huge monitor but have a small preview size, you'll notice a difference.
Choose Edit > Catalog Settings (Windows) or Lightroom > Catalog Settings (Mac OS), and then select File Handling.
For Standard Preview Size, choose the amount that is closest to the longest edge of your screen resolution, but not shorter than it. For example, if your screen resolution is 1920 x 1200 pixels, choose Standard Preview Size > 2048 Pixels.
For Preview Quality, choose Low or Medium, which equates to the low- or mid-range of the quality scale for JPEG files.

LR 4 Library Module Applying Random Changes

Hi,
I have been using LR for a while and randomly started having an odd problem. After importing some images I was flipping through them in the Library Module and the loading animation was coming up across the bottom. After the loading animation stops, the colours willsaturate or the exposure will change slightly. If I go to the develop module, the history only includes the import and no sliders have been repositioned. Please check out the before/after pictures for clarification (hard to notice but the table cloth changes hue and saturation). I have default settings on quick develop, so it's not that. If anyone has any idea what is going on please let me know what to do to stop this!
Before
After
Thanks in advance!

Perfectly normal behavior for Lightroom.
When the photo first appears, it is showing the embedded JPG preview. Then, a few seconds to a few minutes later, Lightroom renders the RAW photo, and the colors may indeed be different. There is no way to turn this off.

Move from library module to develop module : same photo but colors differ

When in the Library module, i see the original photo with its original color.
When i move to the Develop module, it automatically changed or lightened the colors of the same photo.
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In library LR uses a preview, from the camera, or rendered on import. In Develop it renders from the RAW to LR's standard starting point set up by the Adobe Team. You can make it more like the Preview by applying a preset you develop to better match the look and saving it to apply to your imported images.
Don
Don Ricklin, MacBook 1.83Ghz Duo 2 Core, Pentax *ist D
http://donricklin.blogspot.com/

Develop & library module discrepancy (Lr 4.1)

I have read about similar issues floating about with previous versions of Lr, and I have now experienced it in 4.1. When moving between the develop and library modules of images with settings applied (noise reduction, lens correction profiles, etc.), the images change in color, noise reduction, highlights, contrast, etc. This occurs at both the "fit" and "fill" views and at all preview quality settings. At 1:1, the images are identical. However – and this is the bit that is most worrying – the .jpg export retains the settings, or lack thereof, in the library module. I have uninstalled Lr (using AppZapper) and reinstalled it, created a new catalog and re-edited the photos from RAW – all to no avail.
Here are some screen captures:
Develop module:
Library module:
Note specifically the stars – Ursa Major to the upper left of the fence post. The final export retains the characteristics of the library module, which annoys me, greatly. Any help?

First of all - for judging sharpness you need to look at 1:1, not screen size.
In Develop you're looking at the file itself (so that will always be the most accurate), while in Library you're looking at rendered jpeg previews. You probably already know this. But you could try to delete the Previews folder - the one that sits next to the .lrcat - and let Lightroom rebuild them.
What are your Catalog settings for Previews?
You should set a pixel size that is equal or bigger than the display. Here it's set for 2048 because the monitor is 1920 x 1200. This affects screen size previews - 1:1 previews will be generated in any case.

Error with movie thumbnails in Library module

Hello!
I have a Nikon D7000 and I'm having problems with Lightroom's Library module: the preview of the movies doesn't work, I'm getting an error. I'm attaching a screenshot. Could this be fixed before Lightroom 3.4?

Hallo Bhavya,
Please do not post like this as it is not readable . Mostly when you describe it in a simple manner you would get more response.
See this thread for answers from Thomas Jung [Re: Approach content repository other way then URL approach|Re: Approach content repository other way then URL approach]
Wiki [http://wiki.sdn.sap.com/wiki/display/WDABAP/File%2bUpload%2busing%2bcl_fitv_gos%2bclass|http://wiki.sdn.sap.com/wiki/display/WDABAP/File%2bUpload%2busing%2bcl_fitv_gos%2bclass]
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Indeed, wiping out the caches is not a permanent solution.
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Deleting a "question mark" folder in Library module

I am painstakingly bringing old files into Lightroom (I am building a new catalog based on the workflow I just learned at Seth Resnick's D65 Workshop).
I have brought in a folder with 209 files (just an example) but I later realized I have previously edited this folder down to something smaller -- rather than waste time editing that folder again I just created a new folder, and renamed it: the renamed folder includes the (preferred) reduced amount of files.
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Rendering: Larger Preview.... Stalls in Library Module.

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