Adobe does not sell older versions of Lightroom, they only sell the current version. The only way for you to purchase Lightroom 5 would be for you to check a third-party reseller such as Amazon.com, B&H Photo, Adorama, etc. Lightroom 5 is starting to show its age. It might be time for you to consider getting a new computer.
Thanks for your help !
I'm currently looking for what you said : a third-party reseller.
i found it on ebay.
i will continue to search about that and i will be back here
I suggest using extreme caution if you are planning to purchase from eBay. You need to ensure that the seller has "unregistered" Lightroom 5. And you need to make sure the serial number is included. Even if you purchase Lightroom 5 from eBay you will not be able to obtain a valid serial number from Adobe.
Thanks JimHess for your help.
I do not buy fom ebay, i'm afraid.
I found an old serial number and it works....
I have the same problem, an old iMac running Snow Leopard 10.6.8. Did this solution work? I mean, I have to: install mac OS 10.7 Lion, find an old Lightroom 5 serial and then everything worked for you? Is the computer slow or can you manage the raw shots easily? Thanks