Tag: Aperture

Migrating your library from Aperture to Lightroom or Lightroom to Aperture

Following the release of Aperture 3 last month, the Shoot Raw site logs show that we’re getting quite a few people visiting from Google, looking for ways to migrate a photo library from one application to the other. (In both directions, interestingly.) Based on the search terms people are using, it’s clear that these visitors are looking for one thing above all others. Here’s the bad news:

There is currently no way to move or migrate your raw files from Lightroom to Aperture or from Aperture to Lightroom without losing your edits.

That’s what most of you have been searching for but it’s not possible today. If Apple, Adobe or a third-party publisher provides this functionality, we’ll post something on it straight away and we’ll edit this page to point to the new article. (Subscribe for free via e-mail or RSS to get all our articles when they’re posted.)

Possible in theory

It is theoretically possible for someone to write software to make the move easier. Both Lightroom and Aperture store all your edits as metadata. Any third-party conversion software would read and interpret the metadata in the database used by Lightroom 2 or Lightroom 3, or inside the XMP sidecar files; it would then translate that information, which describes all the edits you’ve made in Lightroom, and add it to the Aperture 3 database or vice versa if you’re travelling in the opposite direction. Your original raw files would remain untouched and in their current locations or would be relocated from an Aperture package.

One problem is that there’d have to be a lot of subjective decisions about interpretation, given the differences in camera profiles between the two applications, their different approaches to noise reduction, sharpening, highlight recovery and so on. It’s a difficult task and the market for such an application is quite small so the product is likely to be expensive. I hope one appears but would consider it unlikely.

Moving JPEG or TIFF renderings of your raw files

If you decide to export JPEGs or TIFFs, you probably need no further help—you can bake your changes into the files, export them and include the IPTC metadata. You can do this as well moving your raw files, using your JPEGs as guidance when reimplementing edits.

If you’ve decided to move the raw files

If you’ve decided to redo your all your edits as and when they’re needed, here’s what works and what doesn’t.

Migrating raw files from Aperture to Lightroom and vice versa

  • Your keywords will travel between the applications if you choose to write XMP sidecar files or if, in Aperture, you select the pictures you’d like to export, choose File=> Export=> Master and then include the IPTC metadata, either as a sidecar file (strongly recommended) or written to the original raw file (definitely not recommended). See below.
  • Ratings (star ratings, from zero to five stars) will also travel in XMP files if you’re moving to Lightroom but not if you’re moving from Lightroom to Aperture. (Apple’s somewhat unconvincing explanation of this is here. ) One workaround if you’re migrating to Aperture: in Lightroom, select all photos with a one star rating, add a keyword like “onestar”; select all photos with a two-star rating and add a keyword like “twostar”; repeat for all star ratings before saving XMP files. (See below for the XMP procedure.) After importing into Aperture, reverse the process: find all the images with the “onestar” keyword, assign them a star and so on. (C’mon, Apple, you can do better than this!) [Update: Apple’s notes for the Aperture 3.0.3 update suggest that it should now be able to read ratings from XMP sidecar files. We haven’t gone back to test this.]
  • Edits… no. As above, you currently need to bake your changes into TIFF files or JPEGs if you’re desperate to keep your edits intact. Of course, you can always do both—move your raw files and export TIFF or JPEGs of certain images to sit alongside.
  • Mapping of IPTC metadata can be tricky. Apple has an article on the subject here.

With these limitations in mind, here are some suggestions for moving your library from Aperture and Lightroom or Lightroom to Aperture with the appropriate options in place. Again, this is for moving raw files without edits but with keywords and other IPTC metadata.

Including metadata with raw files from Aperture 3

This screenshot from Aperture 3 shows the pop-up menu that includes the two relevant options. To get to this stage, choose File=> Export=> Master.

We’d recommend getting Aperture 3 to write the XMP sidecars, as shown in the screenshot  above. In general, try to avoid any alterations to the raw files themselves whenever you can. (In the past, there have been examples of bugs in raw-conversion software that have caused difficulties with modified raw files; these difficulties didn’t show up for a long time. Whenever possible, leave the raw files untouched and write sidecars.)

Including metadata with raw files from Lightroom 2 or Lightroom 3

Exporting metadata from Lightroom is as simple as selecting your pictures and hitting command-S (ctrl-S on Windows) to write an XMP sidecar file for each image. Alternatively, when you’re viewing your grid (to get there, hit G), just select all your pictures and go to the Metadata menu. Choose:

Metadata=> Save Metadata to FIle

When this operation is complete, each raw file will have an XMP sidecar file next to it and Aperture will read these sidecars when you import the pictures. You can then import them into Aperture the way you’d import any new raw files and your keywords will be included. (Remember: Aperture will currently ignore your photo’s star ratings—see above for a workaround.)

One-on-one Lightroom workflow training in the UK

If you’re migrating from Aperture to Lightroom, we have a really great training offer on this month for our Lightroom courses in London and the South East. You get to save lots of time and trouble and master your workflow quickly, with expert tuition. See this page.

Aperture 3: the game’s back on

There aren’t many applications of the sort that we would use for a fast and powerful photographic workflow. You could argue that, for the approach we advocate and support at Shoot Raw, there are only two real players: Apple’s Aperture and Adobe’s Lightroom (or Adobe Photoshop Lightroom, to give it its full name).

Alternative approaches

The approach we take isn’t the only one. There are raw converters like Raw Photo Processor that aim to provide the highest resolution or the best sharpness (in the case of RPP, it succeeds admirably in those aims and it offers some integration with Lightroom to registered users—its user interface, though, is, shall we say brutally minimal); there are photo browsers (like Photo Mechanic) that aim to provide the fastest way to categorise your pictures and deal with metadata. But only Aperture and Lightroom aim to combine both the raw conversion and the digital asset management functions in one package and employ quick, friendly user interfaces and useful post-processing functionality.

Above: Lightroom 2 screen shot, with develop controls exposed


When Apple released Aperture, Adobe had been working on Lightroom (Shadowland) for some time but didn’t have a product ready for release. Aperture’s initial success showed that a market did exist for this kind of application and Lightroom was released some time later, after a long public beta period. As of late 2009, photographers were overwhelmingly choosing Lightroom over Aperture on the Mac. (Aperture isn’t available on Windows but Lightroom, as you might expect, holds a commanding lead over other solutions that platform.) Figures from InfoTrends are fairly conclusive, as reported by John Nack here. (John Nack works for Adobe but the figures he’s reporting are independent.)

Image quality in previous versions of Lightroom and Aperture

Both products have offered decent image quality for some time but both have also had their weaknesses. Many users are adamant that one or the other application is streets ahead for their particular camera; our experience has been that the default output Aperture 2.0 has been less blotchy and more pleasing at low light, high-ISO extremes but that Lightroom offered more control over the image and Lightroom 3 beta offers a stronger rendition throughout the ISO range. (It’s slow but we expect that to be addressed in the final release.) We haven’t yet tested specific new profiles offered for cameras like the Nikon D3 in Aperture 3, following complaints from some users of these cameras in Aperture 2.

Above: Aperture 3 screen shot, with heads-up display (HUD) minimised.

Image development

One area where Lightroom has had a clear lead since version 2 is in its ability to allow non-destructive adjustments to parts of an image. Exposure compensation, brightness, contrast, saturation, clarity (“punch”) and sharpness can all be brushed in or out or applied using one or more gradients. Using the brushes and gradients is quick and easy, and they can be combined and applied one over another. These adjustments are referred to as local adjustments because they affect only parts of an image—you brush them over (or apply a gradient to) whichever areas need them. Best of all, they’re entirely non-destructive—you can revist them at any point and alter them or remove them without any need to convert your raw file to something like a TIFF (as was the case with Aperture 2).

Aperture 3 now includes similar brush functions to those used and loved by Lightroom users and closes what was probably the biggest gap between the two applications.

Print and web output

Lightroom 2 offers excellent sharpening for screen and print (using functionality from the highly regarded Photokit Sharpener plugin) for Photoshop. Aperture 3 offers soft proofing, using the ICC profile of your chosen printer/paper combination to give you a better idea of which areas of your image will cause a problem when you print, allowing you to deal with those problems, in advance, on screen. Both are useful functions and both applications will likely end up offering versions of them both. We don’t have any inside information but we expect Lightroom 3, due soon, to include soft proofing of some sort and retain its excellent print sharpening.

Asset management

Aperture 3 allows you to include video and audio inside your Aperture database. Lightroom users can add some of this functionality by installing Jeffrey Friedl’s Video-Asset Management plugin but it would be nice to have it built in. There are also differences in the two applications’ approaches to managing mobile libraries, with Aperture leading the way.

Camera raw file support

This is an area where many photographers feel Apple has been lagging, though users of Nikon and Canon DSLRs in general won’t have had much to complain about. Adobe’s support for smaller and cheaper digital cameras that shoot raw has certainly been faster and more far reaching—for example, Aperture has just gained support for the Panasonic LX3 (released seven months ago) and still doesn’t offer support for the Panasonic GF1 (released five months ago), both supported in Lightroom for many months—but for our market of mostly professional DSLR users, it’s probably not a major concern and there are signs that Apple’s approach is improving.

Camera profiles

One Lightroom strength (version 2.x onwards) is the existence of camera profiles that try to come close to the camera manufacturers’ profiles for popular cameras. That means that they attempt to give you the colour and the look of your manufacturer’s raw converters (e.g., Nikon’s Capture NX) or in-camera JPEGs. They’re pretty good— a clear improvement over Adobe’s standard profiles. In particular, many Nikon users will find the Camera Neutral profile within Lightroom 2 to their liking.


Mostly subjective—you need to download the trials and see how you get on with each application. I initially loved Aperture’s loupe effect but came to dislike it over time. (I no longer use it and just use a full-screen zoom.) Lightroom is what’s called a modal application, meaning that you switch between develop mode, view mode and so on using a keystroke. It becomes second nature when you’re used to it but it does irritate some new users. I loved Lightroom’s interface from the moment I used it—it seemed elegant, clean and simple and offered me the chance to customise its behaviour to my taste. Others have had exactly that reaction to Aperture.

Moving libraries between applications

[Update March 2010. We have an article with a little more detail about moving your library from one application to the other here.]

Both applications now support the import of XMP sidecar files (it’s new to Aperture). XMP sidecar files hold information about the file’s metadata so you’d expect that to mean that ratings and keywords would travel between Aperture and Lightroom if you decide to move your library permanently from one to another. As of February 2010, however, that only works when moving from Aperture to Lightroom. Aperture doesn’t read image ratings when importing, even though it clearly writes those same ratings to its own XMP sidecar files when told to. (See the Apple knowledge base article on this issue here.)

Your image edits do not survive the journey in either direction so your non-destructive post-processing work will be lost if you migrate from Lightroom to Aperture or vice versa unless you’re prepared to bake in your changes by exporting TIFFs or JPEGs. (That’s a significant step—make sure you hang on to your raw files and move those across as well, if you choose to migrate TIFFs or JPEGs.)

Is Aperture 3 good enough to warrant a switch from Lightroom 2?

It’s a very strong upgrade for existing users and also a strong offering for new users but most of the switchers are likely to be people who prefer Aperture’s interface. There are lots of aspects we haven’t discussed above, including great book-publishing options, for one, and publishing options with custom book publishers. All this should seem like good news for Lightroom users—a lacklustre or half-hearted Aperture release at this stage would have left Lightroom with little or no competition in this area and the product would have been more likely to stagnate. Now that Aperture 3 has non-destructive brush adjustments and some other improvements, the game is back on. Aperture 3 should prove to be a good enough product to stop the general move from Aperture to Lightroom and put some pressure back on Adobe to continue innovating.

Faces and places

In brief: Faces, in its current Aperture 3 and iPhoto incarnations, is unlikely to win over many pro photographers or serious amateurs. It’s a great idea that will one day be genuinely useful. Places is another thing altogether: if you have a GPS unit with your DSLR or use an independent unit like a Garmin, this is can be a real time saver.

What we’re expecting in Lightroom 3

We expect excellent noise reduction (both colour and luminance) and probably soft proofing, though this feature didn’t make an appearance in the beta version. We also expect the much improved, more detailed rendering in the Lightroom 3 beta to make it through to the final product in some form. It will retain its excellent output sharpening, gain much improved local sharpening controls (which are a little weak in Lightroom 2) and probably one or two surprises. (These are personal opinions—we have no link to Adobe or Apple—but we’re quite confident about them.)

Advice for existing users and new users

If you have a large library in either application, you’re probably best sticking with it for the moment. Both offer free trials so you can import all or part of your existing image library into the competing app and compare output quality, speed, interface and functionality. Run them in parallel for a month. With the release of version 3, Apple has shown clearly that the Aperture project is alive and kicking and perhaps the momentum that the Aperture team has gained recently will carry through to an early, class-leading version 4. If you’re starting out, you now have a genuine choice again between competitive applications—something that couldn’t have been said a week ago.

Will Shoot Raw be offering Aperture 3 training?

We’re certainly looking at the product with renewed interest—that wasn’t the case with Aperture 2, after a short testing period. We welcome your thoughts and we’ll keep you posted.

The iPad question

Will there be raw converters on the iPad device? I’d guess so, eventually. And which raw converter is most likely to make is likely to make it to the iPad first? Well, that’s easy…:-)

Where to get the trials.

The Aperture 3 trial (for UK users) is here. Apple will mail you a download link and a serial number that’s good for 30 days.

The LIghtroom 3 public beta (free, expires April 2010) is here.

The Lightroom 2 trial is here.

Where to buy

Here are our Amazon UK links—all Amazon prices include VAT.

Aperture 3 upgrade from Aperture 2 (requires an Intel Mac and Leopard or Snow Leopard):

Lightroom 2, full version for Mac OS X or Windows:

For Lightroom users upgrading from version 1 to version 2 (OS X or Windows):

Amazon isn’t allowing affiliates to link to the full version of Aperture 3 yet (not sure why) but you can find it here.

Aperture 3 is also available at the Apple UK retail store.


If you have questions about Lightroom, Aperture or raw workflow in general, drop us a line and if we can, we’ll turn the answer into a new blog entry.