I have been running Lightroom 4 on my Macbook pro Model A1286 (2010 I think). Just purchased Canon EOS 5D Mark III and shoot always in Canon raw. Images will not download into Lightroom 4 and I have found I need Lightroom 6 latest version and MAC OS 10.9 on Macbook pro.
Questions : My Macbook pro is not nor will it ever be connected to the internet, as I use it exclusively to process my photos. Can I get a Lightroom DISC (and instruction booklet) with updates on it to install the new system into my computer and will it automatically override the LR4 instructions, thereby updating them, or do I have to uninstall LR4 before installing the latest LR6 ? If I have to uninstall LR4 do the photos already in the Library get deleted or archived ?
If the new version of LR is separate, does that mean there will be 2 versions on the computer ? Will I be able to reprocess the images in LR4 with the new upgrades in the newest LR6 to improve the image results ? Notice I have ruled out Lightroom Creative cloud for the reason stated above. I do not want my computer connected to the internet. With that in mind, is Adobe publishing the many additional benefits of the Lightfoom CC version in a perpetual license version say LR7 and so on. I resent upgrades necessitating internet connection (and am probably not the only one who feels this way.
Same question for upgrading the MAC OS
The 5D Mark III has been supported since Lightroom 4.1 so there's no need to upgrade to version 6 if you don't want to.
If you cannot open Raw files files then I presume you are running version 4.0. Check Help > System Info.
The latest version of Lightroom 4 is 4.4.1. The hard part will be finding a download link for 4.4.1 to download offline if your Mac is not connected to the internet.