Photo preview size of 1920

Hello,
When I go into Aperture -> Prefs -> Previews, in the list of potential preview sizes, an asterisk appears beside the "fit within 1920 x 1920" option. It thus looks like "Fit within 1920 x 1920 (*)"
Can somebody shed some light on the significance of the asterisk??
Many thanks!
H.

Aperture uses the asterisk to indicate the long dimension of your currently connected primary monitor. This is the recommended size for Previews, being large enough to display full screen and no larger.
This information is hard to find in the User Manual. The page it is on, however, is well worth knowing.
Aperture places asterisks (*) next to choices that match the resolution of your currently connected displays.
From the [User Manual|http://documentation.apple.com/en/aperture/usermanual/index.html#chapter=6%26sec tion=15%26tasks=true]
Message was edited by: Kirby Krieger

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An Aperture 3 "Photo Preview" explanation appreciated.

As I have plenty of free disk storage I would like to set “Photo Preview” to yield the best possible quality and size. (The resolution of my monitor is 1260 X 1440)
I would appreciate an explanation of the choices of the Fit Within figures such as “Don’t limit”, “Fit within 2560 X 2560”, Fit within 1920 X 1920” etc.
My aim is to show my photos onscreen to their best advantage as well as sometimes using them for emailing to friends or creating slide shows for emailing to friends.
Are my current settings right for my purposes?
Photo Preview                       “Don’t limit”
Photo Preview Quality          10
Cliff

Hi Cliff. Sounds like you got this figured out already .
The Preview file that Aperture creates and keeps is a JPG rendering of the Image. In general it is a big thumbnail.   The Preview is used:
- as a placeholder while the Original+Version is rendered (this is done "live" -- Aperture does not keep these files from session to session).
- when in in Quick Preview mode (the Preview is used in place of the fully-rendered Image in order to speed processing when culling or working with metadata).
- when you drag an Image from Aperture to another program.
- when the Originals are off-line (e.g.: if you have put your Image's Originals on an external drive and that drive is not mounted).
- in Slideshows (but if you create a Slideshow and the Previews don't exist, Aperture will create them).
- and probably a few I forgot.
The Preview can also be used as a some insurance against total loss: if you lose your Image's Originals but still have the full Library, the Library will have the Previews.
You should set your Preview size (and existence) based on your needs. I keep Previews of every Image, at the resolution of my monitor, at compression level 10. If you truly want "best quality" and maximum size, you should set yours to "Don't limit" and "12". The difference between 12 and 10 is going to be a lot of bytes, and probably no perceptible change in quality. The size you select is straight-forward, with a direct relationship between size and storage requirements.
Note that you can delete and re-render Previews at any time. I have found it much easier to "set it and forget it" -- but I am willing to provide the storage space needed and prefer the performance of a Library with a full set of Previews.
I suspect you've see it, but the User Manual page on Previews is here.
Message was edited by: Kirby Krieger -- link added, minor other additions.

Preview size question

Right now Preview size is set at Half Size and slider all the way to the left. Lowest quality I guess. This all in Aperture 2.1.1 preferences.
It takes forever to update previews. I shoot D300 NEF.
Is there a way to turn off previews? Or make them as small as possible? I import the photos on the MBP hard drive.
So I need Previews? I do not use the other iLife apps.
Anything to make Aperture faster is what I'm looking for.

No it says Previews next to the spinning pie chart as it's updated. I see thumbnails too.
My settings
If I make complex adjustments to a photo, I can wait for quite a while as the preview updates before I can do anything else. If I could turn off previews I could literally do my work in half the time.

Preview size & quality settings

Although I have been using LR for many months I am still confused as to what to set my import settings to when it comes to previews. Standard or 1:1? What quality settings? Can anyone enlighten me on best practices?

>... my import settings to when it comes to previews. Standard or 1:1?
Standard Size previews are of your choosing: 1024, 1440, 1680 and 2048. You set these in the catalog settings "File Handling" tab. Also, you can set the quality to Low, Medium or High. You could also think of the Standard Size as that which most closely matches you screen size.
1:1 Previews are previews that match the dimensions of the image and are generally much larger than the Standard Size previews. e.g. from a 10MP Nikon D200 the size is 3872*2592.
The implications of your choices are as follows:
- The larger the preview size that you choose, the slower the import
- Larger previews take more disc space in your .lrdata folder, specifically the thumbnail-cache file.
If you are going to import a large number of photos, that you may later cull prior to doing any develop work, then you could choose Standard Size previews, with a low (1440) pixel size, Medium Quality. Import should then be fast. After you have eliminated photos that you do not wish to keep, you could use the Library ->Previews -> Render 1:1 Preview, if you wish to generate full-size previews of the selected pictures. Again, this may take a significant amount of time, depending on how many photos you select.
When you go to Develop module, Lightroom will automatically generate a 1:1 preview of the selected photo. So if you are not concerned about a slight delay while Lighroom generates 1:1 preview in Develop module, you could stay with Standard Size previews for import.

Standard Preview Size/Preview Quality

This may be a silly question, but in Library mode, under Edit>Catalogue Settings>File Handling, you have options under Preview Cache for 'Standard Preview Size' (1024/1440/1680/2048/2880 pixels) and Preview Quality (High/Medium/Low)... but what do these settings actually do; I've tried changing them & not noticed and difference??

Les_Cornwell wrote:
Thanks again Rob
You bet .
Les_Cornwell wrote:
I've tried all the different size options, namely 1024 through to 2880 & low/Medium/high and none make any obvious difference at all.
So are previews only created as required when you view a picture in full screen mode or does LR create a preview for all your files?
Every image you look at in Library module comes from the (library) previews, there are up to 8 possible jpegs:
* a tiny thumbnail in root-pixels.db
* up to 7 jpegs ranging from small to 1:1 in the "preview pyramid" (each smaller is half the dimensions of it's bigger sibling).
Try this with a 10 photo test catalog:
If you have a big monitor and set standard preview size to 1024, then (with Lr closed) delete all previews, then restart Lr and wait for all the "..." indicators to be extinguished (indicating standard previews have been built), then step from photo to photo in loupe view with all panels collapsed (loupe view "real-estate" maximized), you should see "loading" indicator, since it needs a bigger preview than you've got built. What it will do then is build 1:1 previews and all the smaller ones along with it, which is suboptimal from a performance point of view. If you try and zoom in to 1:1 after the "loading", there will be no additional loading, since 1:1 previews were already built.
Then, repeat the test with preview size at max - no loading indicators, right? (when stepping in loupe view after standard previews have finished being built, I mean). Except now if you try to zoom in there will be "loading", since 1:1 preview were not required to display the loupe view, they will need to be built for the zoomed (1:1) view.
The only difference between big enough and too big will be an ever-so-slightly greater lag when stepping in the loupe view and no 1:1 preview exists (when preview is too big I mean), since it's loading a bigger standard preview than is actually needed. Reminder: if preview is not big enough, there will be an ever-so-slightly bigger lag when stepping in loupe view too (e.g. vs. just big enough), since it's using the 1:1 preview instead of standard (which wasn't big enough). So, tester beware... (somewhat counter-intuitively, in some cases, it will be faster loading a preview when settings are, in general, too big, because it can get away with loading the next size down, which is an even better fit, e.g. if image is cropped just so - all of these little nuances make it especially tricky to test & evaluate, so consider doing initial tests using uniform-size uncropped images, to reduce the number of variables - it's confusing enough as it is ;-}).
Note: as previously mentioned, there is considerable complexity (and bugs) in the preview system, and I may not have described it perfectly, so it wouldn't surprise me if your results were not exactly like that, but I just went and retested on my system, and what happened is exactly as I described above (win7/64), as I read it anyway...
Regarding quality, you should see difference in some photos not others, but ONLY if it didn't resort to the 1:1 preview which may be higher quality than the standard and is independent of the standard quality setting. (I think somebody may have stated that you'd need to zoom in to see differences in standard preview quality settings, but that is wrong - the only way to see differences in standard preview quality settings is if you are in fact viewing standard previews, which you aren't when zoomed in to 1:1, and anyway it can be ellusive - see paragraphs above...).
PS - If you want to compare jpeg quality of standard previews, one way is to export them using PreviewExporter. Again, it's tricky, since you need to assure you aren't exporting a scaled down version of the 1:1 instead of a true standard preview. After exporting you can compare outside Lightroom, so you don't have the "preview of a preview" issue going... I use Beyond Compare by Scooter Software for doing objective comparison of like-sized jpegs, but you can compare subjectively using any ol' viewer, e.g. as built into OS.
Too much?
UPDATE:
Les_Cornwell wrote:
does LR create a preview for all your files?
No - they are created on an as-needed basis (thus the reason we hear many complaints about how stale or non-existent previews should be built in the background, to minimize "loading" in library module, e.g. after making dev changes to a large bunch), but note: standard previews may be considered "needed" when thumbnail is in view in grid or filmstrip (but not considered needed if thumbnail is off-screen, even if existing in filmstrip and/or grid).
R
Message was UPDATED by: Rob Cole

Speed-up? - Force a rebuild of Preview Size

Folks
Many people say they experience an increase in speed by having smaller previews. The default Preview size, in 1.5, as set in Preferences under 'Limit Preview Size' is 'Don't Limit'.
If you alter this setting to a smaller setting it does not alter the size of your existing Previews. Some folks suggest throwing away all your Previews and starting again. However - Tech article 304345 suggests an easier/better way
Aperture: Previews do not update after changing Limit Preview Size Preference
Solution:
Issue or symptom
After you change the Limit Preview Size setting in Aperture's Preferences, existing previews are not changed, even if you choose Images > Update Previews.
Products affected
Aperture 1.5
Solution
Changing the Limit Preview Size setting does not mark existing previews as out of date. In order to force existing previews to be regenerated using a new size setting, select the desired images, press Option and choose Images > Generate Previews.

Is there a way to easily tell which pictures have unwanted preview sizes? I started building previews (36,000 pictures)with the aperture default setting (unlimited size) and a day-and-a-half (approximately 24,000 pictures) later switched to the size recommended for my display. Aperture is definetly running slower than before I updated to 1.5. If there isn't an easy way to identify and resize the "unlimited size" photos, am I better off just deleting all previews and rebuilding them from scratch, or should I just rebuild as needed for purposes of ilife integration? I like the idea of being able to view all pictures in my Aperture library for purposes of using in other applications but if it is in fact slowing down Aperture I will happily rebuild.
G5 2.3ghz, 23 inch HD cinema display Mac OS X (10.4.8)

Limit Preview Size. Which setting are you using?

I'm not exactly sure how the Limit Preview Size preference affects my workflow. Which setting are you using, and why?
My preference is currently set to the v2.0 default 1/2 Size. My iMac's resolution is 1680x1050, and I'm using the Canon EOS 1D Mark III taking full size RAW images at 3888x2592.
regards,
Gregory

Gregory,
I use the default (which is 1/2 size) with no ill effects. Previews are used by external programs to gain access to photos in your Aperture library. (This is not the way your external editor works, though.) Your preview size will not affect your workflow. When previews are turned on, Aperture works on generating previews when you have something new of which to make a preview. I seriously doubt that making a small copy, versus making a smaller copy, would affect how long it takes Aperture (and therefore, how sluggish Aperture might appear.) The difference between making previews and not making previews can be significant.
nathan

Previews not Generated for 1024 Preview Size

I created a new catalog, selected the preview size of 1024, medium quality, then imported a bunch of Nikon NEF photos, and converted to DNG. Regardless of whether I render previews on import, or render previews manually, when I scroll through Loupe, I get the Loading message. When I look at the previews folder for the catalog, the preview for a sample photo changes from about 250KB to 1.5MB after I get the Loading message.
When I create another catalog and select a preview size of 1440, it works as expected and there is no delay scrolling though Loupe mode. The previews seem to be, however, about 400KB in size.
So there seems to be 2 issues. One is that the 1024 previews aren't generated until the photo is viewed, and the other is that the size of the preview is disproportionate.
Anyone else see this?
System is Windows XP SP3, Lightroom 3.2.
John Gregson

John,
The following may give you a better idea as to how Lr handles previews http://forums.adobe.com/thread/358026?tstart=0 and http://forums.adobe.com/thread/358039?tstart=0

Standard Preview size/quality Lightroom 1.1. (how and what)

I'm working on a Macbook pro, with hi-res 17" screen 1920x1200. In most manuals, tutorials etc. it says that you can "set the standard preview size fitting for your screen".
I'm looking for some more background info on the standard preview, to decide which setting to use(if somebody has other criteria to keep in mind please do say so):
1) What is the difference in size of files for the different combination of options (pixel/quality). Does somebody have a list.
2) What is the actual difference in the quality options
3) In which modules is the preview size used (also in development and slide show?)
4) Are they also used to generate the thumbnails from? If so, does a higher standard preview size reduce the performance in library mode because it as to shrink bigger files for these thumbnails?
5) what happens if I would use the smaller, let's say 1440 preview and then decide to view the picture full-size, in library or slide show
6) What would be the size (in pixels) on the normal main window in lightroom on my 1920x1200 screen. if it is about 1440 (might take that one)
Last question of course: What standard preview size / quality should I use on my 1920x1200 screen??
Thanks in advance for all your thoughts!

As to standard preview size and quality, try 1440 and 1680 and Med and High quality and see what you like best. You will probably choose 1680 size for your screen running at 1920x1200. That will let you run LR full screen where the image size will be close to the full size of your monitor. You can try 1440 too but I doubt that you will see any performance improvement. I have tried both sizes on my 1600x1200 monitor and I see no difference in quality or speed.
Try both Med and High quality and see if you notice any difference in your preview quality or speed. High will make your preview folders bigger which might be a factor if you have limited hard drive space.
Don't think preview size has anything to do with thumbs. Standard previews are separate from 1:1 previews so you can always zoom in and LR will generate a full size preview.
In short feel free to experiment with various settings in LR. Good way to learn the program and you will know what works best on your particular computer.

How do I make a photo file size smaller? The photo is .jpg.

I need to make a photo file size smaller for some other uses.
imac Mac OS X (10.4.8) iphoto 5.0.4

Haha yes i forgot that you may not be using Apples Mail. Lets try the export then file>export, then under the heading "format" click JPG. Then click "scale images no larger then:" in the width field type "800" then the height field should change by itself. Thats what i do for emailing, it's usually the best trade between quality & size, that should be small enough to email. Best wishes JAG
P.S. when you first click "scale images no larger then" what's already in the width height fields? thats your actual photo resolution.

Photo File Size and Photoshop processing

On previous discussion, Steve Grisetti noted that problems with burning are sometimes associated with photo file size. The post stated that Photoshop Elements has a batch processing selection that can resize photos all at once. I when to Photoshop, selected process multiple file, selected source, save in same as source, and resize images 1000. When I viewed my photos after, about 50 of my photos were now duplicates of other photos For example, I put all my pictures in timeline order prior to doing my video. If I found a NEW photo after I had already scanned and named the photos, I would place the NEW photo in the picture folder by adjusting accordingly: 1.jpg, 2.jpg 3.1.jpg 3.jpg The 3.1.jpg would be the NEW photo. Photoshop replaced 3.1jpg with the picture in 3jpg. Does anyone know how to restore my photos back to the original "3.1jpg"? The backup is not accessible at this time.

If I understand you correctly you have been using the renaming feature and the parameters you used caused file1 to be renamed to a pre-existing filename (file2). If this is so then you probably have lost the original file2. An undelete utility may help (try Piriform Recuva).
For the future when using batch conversion it is good practice to select a new folder for the outputted files.
It is also good practice to burn all image originals to a CD or DVD immediately after importing from your camera. This way you can always recover originals.
Here are a couple of screenshots, the first from Elements Organizer and the second from Photoshop Elements. Which one did you use and what parameters did you enter?
Cheers,
Insanity is hereditary, you get it from your children

How to create a photo preview album DVD in DVDStudio Pro ?

Hi,
How can i create a DVD still image ( Photo ) preview with DVDStudio Pro ? The preview should allow the viewer to go back and forth between images in addition to pause and go back to index gallery with the remote control. The final result should be something like a Flash or HTML web image gallery created by LightRoom ( sorry for the F word in APPLE space ). It will be used by elderly users that are not computer saavy but need to proof / preview still photography sessions.
If DVDStudio Pro is not the tool for this, could you recommand a Mac application for this.

iPhoto doesn't run on the iPad. Other than that you'd need to ask your question on the iPad forum.
Regards
TD

Photo Download Size

All photos were brought into the web page by using the iWeb "Media" button and navigating to the iPhoto library.
Then, in iWeb, I go to *Inspector > Photos*
Under "Photo Sharing," I set the Photo Download Size to "Original (Full Quality)."
Then, I test my web page. The downloads are roughly 400K. As a sanity check, I go to iPhoto and export. As expected, the sizes are roughly 4 Meg.
What am I doing wrong? What is it that I don't understand?

Actually, the issue is even worse. As I indicated in the first post, I'm unable to allow full-sized downloads. Further, for those photo pages where I do not wish to allow any downloads at all, I'm unable to turn off the downloading capability! I discussed these issues with an Apple tech and he duplicated my results. He's now investigating to determine if there is any workaround.

Deleted picture keeps showing up in photo preview of camera

Okay so I took a picture on my phone with the camera from the lock screen. When I tried to view it it gave me a message that said that there were no photos or videos. So even when I unlocked my phone and checked my albums the picture isn't in any of the albums, but it still shows up in the photo preview in the bottom left hand corner. I've deleted all the pictures that I've taken today and it still shows up in the preview How do I get rid of that picture so it doesn't keep showing up?

Hi charlbi,
Welcome to the Apple Support Communities!
I understand that you took a photo from the lock screen that shows in the lower left preview window, but that picture doesn’t show up in any albums in Photos. In this situation, I would suggest resetting your iPhone and checking again. Please let me know if you still see the preview of that picture after the reset.
Restart or reset your iPhone, iPad, or iPod touch - Apple Support
Cheers,
Joe

ICloud photo library size

Hi all,
I just have a quick question regarding iCloud photo library size.
What happens when the iCloud photo library is larger than the space on my iPhone?
My iCloud photo library size is 4gb (I am still within the free 5gb) however, the space on my phone is under 4gb.
All of my photos have been uploaded on the iCloud photo library beta for Mac/ Yosemite.
I'm aware that there are 2 options within the iCloud - Photos menu which are "Optimise iPhone Storage" or "Download and Keep originals"
Now I thought that regardless of which option you selected they would still store a local copy on your iPhone, but what happens when even the optimised versions take up more space than your phone can handle?
Sorry if I'm being a bit slow here, I'm just slightly puzzled by this one.
Thanks

http://www.imore.com/what-you-need-k...ut-photos-os-x
#macrumors
One lesser-known feature of iCloud documents (I can't speak for Photos quite yet) is that storage on your iOS devices is dynamically managed - if a document hasn't been accessed from the iOS device in a long time, it will automatically be removed if space is needed (the way RAM is managed on a Mac) - all you have on the iOS device at that point is document metadata (title, etc.). If/when you need to access it again, it'll be re-downloaded. Note that it's different on a Mac - every iCloud document is cached on your Mac - I guess the assumption is that you have the space, and that accessing documents while working offline/off the grid is more important to someone who's using a laptop.
I expect iCloud Photo Library will work similarly, if not identically: On iOS a thumbnail of everything, larger images of items that are actually opened and viewed. If available storage starts to dwindle, the higher-res versions of the least-frequently viewed items will be removed until they're called for again. On Mac, a complete cache of everything, at full resolution.

Photo preview size of 1920

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