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Cambios: blogs.adobe.com/lightroomjournal/2013/04/lightroom-4-4-now-available.html
Lightroom 4.4 is now available as a final release on Adobe.com and through the update mechanism in Lightroom 4. The goal of this release is to provide additional camera raw support, lens profile support and address bugs that were introduced in previous releases of Lightroom.

Changes to Existing Camera Support:

Lightroom 4.4 includes a correction to the demosaic algorithms for Fujifilm cameras with the X-Trans sensor. This specifically impacts the following cameras:

Fujifilm X-Pro1 (*)
Fujifilm X-E1 (*)
Fujifilm X100S
Fujifilm X20
(*) Based on user feedback, the default sharpening amount applied to Fujifilm X-Pro1 and Fujifilm X-E1 raw files has been increased between Lightroom 4.4 Release Candidate and the final Lightroom 4.4 release.

Lightroom 4.4 includes a correction to the demosaic algorithms for Fujifilm cameras with the EXR sensor. This correction applies only to raw images captured using the “EXR HR” mode with the following cameras:

Fujifilm X10
Fujifilm XF1
Fujifilm X-S1
Fujifilm S200EXR
Fujifilm HS20EXR
Fujifilm HS30EXR
Fujifilm F550EXR
Fujifilm F600EXR
Fujifilm F770EXR
Fujifilm F800EXR
Adjusted Nikon default white balance for the following camera models:

NikonD2X
NikonD2Xs
NikonD2Hs
NikonD200
NikonD40
NikonD50
NikonD80
– Fix default aspect ratio support for Fujifilm X-E1 raw files.

Bugs Corrected in Lightroom 4.4:

The following bugs that were part the Lightroom 4 releases have been corrected. The team appreciates the very detailed feedback the community has provided on Lightroom 4 and we’re excited to correct a number of issues experienced by our customers. These issues have been FIXED:

The crop overlay tool resized incorrectly when used in conjunction with the “Constrain to Crop” checkbox in the Lens Correction panel.
Background graphics were not correctly rendered within the Book Module.
Reading metadata from file would sometimes result in keyword and and GPS metadata to not save for video files.
Updated the “Missing File Icon” for HiDPI / Retina displays
The supplied lens profile for the Sony RX-1 did not contain vignette information.
Preview in Develop Module was not updated with the latest adjustments.
Square tile artifacts while painting with brush.
Previews of photos in portrait orientation were blurry when viewed in the filmstrip in the Develop module. (Mac only).
Image in Book Disappears After Changing Modules.
Error changing modules when in Slideshow with second monitor connected.
Stack badges displayed the wrong count when creating new stack that included a preexisting stack.
Local Adjustment Effect (Brushed Adjustment) Disappears (temporarily) After Selecting a Pin (Win only).
Book changes are not saved after switching between modules.
The Filter scrollbar within the Library module was not rendering properly.
Auto-tone was not working properly when used in conjunction with the Exposure adjustment slider. (Win only)
The Black&White button was not creating a History state within the Develop module. (Win only)
When switching from image to image, remnants of previous image visible on fringes of new photo. This occurred on Retina screens only.
RGB color readouts were specified in the Adobe RGB colorspace rather than the ProPhoto linear colorspace. This occurred when working in Soft Proofing within the Develop module.
Horizontal artifacts would occassionally appear in DNG files.
Adding a page behaved inconsistently in the Book module depending on the method used to add a page.
The state of the “Remove Chromatic Aberrations” checkbox within the Lens Correction was not persistent between sessions of Lightroom.
Cannot add contacts from Address Book to email on Mac.
Sliders can no longer be moved on Win by using mouse wheel.
New Camera Support in Lightroom 4.4:

Canon EOS 1D C
Canon EOS 100D (Digital Rebel SL1 / EOS Kiss Digital X7)
Canon EOS 700D (Digital Rebel T5i / EOS Kiss Digital X7i)
Casio Exilim EX-ZR700
Casio Exilim EX-ZR710
Casio Exilim EX-ZR750
Fujifilm FinePix F900EXR
Fujifilm FinePix HS50EXR
Fujifilm FinePix SL1000
Fujifilm X100s
Fujifilm X20
Hasselblad H5D-40
Hasselblad H5D-50
Hasselblad Lunar
LEICA M (Typ 240)
Nikon 1 J3
Nikon 1 S1
Nikon D7100
Nikon Coolpix A
Nikon Coolpix P330 (**)
Olympus XZ-10
Pentax MX-1
Samsung NX300
Sony Alpha NEX-3N
Sony Alpha SLT-A58
* denotes preliminary support

New Lens Profile Support in Lightroom 4.4:

Lens Name Lens Mount
Canon EF 35mm f/2 IS USM Canon
Canon EF 24-70mm f/4 L IS USM Canon
SIGMA 17-70mm F2.8-4 DC MACRO OS HSM C013 Canon
SIGMA 35mm F1.4 DG HSM A012 Canon
Nikon 1 NIKKOR 18.5mm f/1.8 Nikon
Nikon AF-S NIKKOR 70-200mm f/4G ED VR Nikon
SIGMA 35mm F1.4 DG HSM A012 Nikon
TAMRON SP 70-200mm F/2.8 Di VC USD A009N Nikon
TAMRON SP 90mm F/2.8 Di MACRO 1:1 VC USD Nikon
F004N Nikon
SIGMA 18-250mm F3.5-6.3 DC MACRO HSM Pentax
SIGMA 17-70mm F2.8-4 DC MACRO OS HSM C013 Sigma
SIGMA 35mm F1.4 DG HSM A012 Sigma
SIGMA 18-250mm F3.5-6.3 DC MACRO HSM Sony
SIGMA APO MACRO 180mm F2.8 EX DG OS HSM Sony
Sony E 10-18mm F4 OSS Sony
TAMRON SP 24-70mm F/2.8 Di USD A007S Sony

@4car0
Los dos, el instalador selecciona en función de tu sistema.

Saludos.