Download Lightroom 4.2 RC from Adobe Labs here: http://labs.adobe.com/technologies/lightroom4-2/
Adobe Lightroom 4.2 Features
New Camera Support
The following new cameras are now supported:
- Canon EOS 650D / Rebel T4i
- Canon EOS M
- Fuji FinePix F800EXR
- Leaf Credo 40
- Leaf Credo 60
- Nikon 1 J2
- Panasonic DMC-FZ200
- Panasonic DMC-G5
- Panasonic DMC-LX7
- Pentax K-30
- Sony DSC-RX100
| Lens Mount | Lens Name |
|---|---|
| Canon EF 24mm f/2.8 IS USM | Canon |
| Canon EF 28mm f/2.8 IS USM | Canon |
| Canon EF 40mm f/2.8 STM | Canon |
| Canon EF-S 18-135mm f/3.5-5.6 IS STM | Canon |
| Sigma 18-250mm F3.5-6.3 DC Macro OS HSM | Canon |
| Zeiss Distagon T* 1,4/35 ZE | Canon |
| Zeiss Distagon T* 2/25 ZE | Canon |
| LEICA APO ELMAR-S 180 mm f/3.5 (CS) | Leica |
| LEICA APO MACRO SUMMARIT-S 120 mm f/2.5 (CS) | Leica |
| LEICA APO-SUMMICRON-M 50 mm f/2 ASPH. | Leica |
| LEICA ELMARIT-S 30 mm f/2.8 ASPH. (CS) | Leica |
| LEICA SUMMARIT-S 35 mm f/2.5 ASPH. (CS) | Leica |
| LEICA SUMMARIT-S 70 mm f/2.5 ASPH. (CS) | Leica |
| LEICA SUPER-ELMAR-S 24 mm f/3.5 ASPH | Leica |
| LEICA VARIO-ELMAR-S 30-90 mm f/3.5-5.6 ASPH. | Leica |
| Nikon AF-S DX NIKKOR 18-300mm f/3.5-5.6G ED VR | Nikon |
| Nikon AF-S NIKKOR 24-85mm f/3.5-4.5G ED VR | Nikon |
| Sigma 18-250mm F3.5-6.3 DC Macro OS HSM | Nikon |
| Tamron SP 24-70mm F/2.8 Di VC USD A007N | Nikon |
| Zeiss Distagon T* 1,4/35 ZF.2 | Nikon |
| Zeiss Distagon T* 2/25 ZF.2 | Nikon |
| Pentax smc D FA 645 25mm F4 AL (IF) SDM AW | Pentax |
| Pentax smc DA 40mm F2.8 XS | Pentax |
| Pentax smc DA 50mm F1.8 | Pentax |
| Pentax smc DA 645 25mm F4 AL (IF) SDM AW | Pentax |
| Sigma 18-50mm F2.8-4.5 DC HSM | Pentax |
| Sigma 18-250mm F3.5-6.3 DC Macro OS HSM | Sigma |
| Sigma 105mm F2.8 EX DG OS HSM Macro | Sony |
| Sigma 18-50mm F2.8-4.5 DC HSM | Sony |
Fixed Issues
The following issues have been fixed in Lightroom 4.2 release candidate:
- Folder stacks with virtual copies get unstacked when moving to another folder.
- Stacked photos get hidden in both the Grid view and Filmstrip. This occurs when photos get unstacked as a result of enabling auto-stacking.
- Errors encountered when publishing videos to Facebook through the Facebook Publish Service.
- Users may have occurred problems when trying to enter the Web Module from Library.
- Unable to edit JPEG photos in Photoshop Elements.
- Unable to upload files to Flickr if there is a carriage return in either the Title or Caption fields (Win only).
- Background graphics that are applied to a Book globally may not appear as expected in a Saved PDF.
- Certain book covers had spine text positioned in a Horizontal manner, not Vertical.
- Double byte characters are not being exported to PDF in Books.
- Photos were exported with original GPS coordinates recorded by the camera, not with the GPS coordinates updated in Lightroom.
- Keyboard shortcuts in the Develop module sometimes do not work when editing an image in Process Version PV2010.
- Parents and synonyms of “do not export” keywords also do not export.
- Audio does not play in video files after creating a slideshow containing music (win7 only).
- Tether support not working for Nikon D4, D800 , and D800E (win only).
Frequently Asked Questions
- Can Lightroom 4.2 Release Candidate be installed alongside Lightroom 4.1?
-
- Mac: The Lightroom 4.2 release candidate for Mac can be installed alongside earlier versions of Lightroom 4.
- Windows: By default, the Lightroom 4.2 release candidate for Windows will remove or overwrite your existing Lightroom 4 installation. If you wish to return to Lightroom 4 after installing Lightroom 4.2, simply reinstall Lightroom 4 from your original download after uninstalling Lightroom 4.2 using the Windows add/remove program utility.
Both versions of the application share the same catalog format allowing your catalogs to be opened by either version without complications.
- When will the Lightroom 4.2 release candidate expire?
- 10/31/2012
- Will there be an upgrade charge for the final Lightroom 4.2 Release?
- No, Lightroom 4.2 will be a free update for all current Lightroom 4 customers.
- Where can I provide feedback on this release?
- If you experience an issue with this release candidate, please submit a bug report. Ask questions and discuss ideas with Lightroom customers in the Lightroom discussion forum.
- Will additional camera or lens support be available in the final release?
- It is possible that additional cameras or lenses will be supported in the final release.
System Requirements
The minimum system requirements are as follows:
Windows
- Intel® Pentium® 4 or AMD Athlon® 64 processor
- Microsoft® Windows Vista® with Service Pack 2 or Windows® 7 with Service Pack 1
- 2GB of RAM
- 1GB of available hard-disk space
- 1024x768 display
- DVD-ROM drive
- Internet connection required for Internet-based services
Mac OS
- Multicore Intel processor with 64-bit support
- Mac OS X v10.6.8, v10.7 and v10.8
- 2GB of RAM
- 1GB of available hard-disk space
- 1024x768 display
- DVD-ROM drive
- Internet connection required for Internet-based services
Release Notes
This release of Lightroom 4.2 is prerelease software and is designed for evaluation purposes only. The software contained within the installer is not final; but many portions of the technology are fully implemented and ready for you to try and discuss.
(via Adobe Labs)






















