You have two choices
- Purchase Lightroom CC or Lightroom 6; or
- use the FREE Adobe DNG Converter (version 9.0 or later) to change the RAWs to DNG, and then import the DNGs into LR 5
Thank you for your answer.
Does it take a long time to convert the RAW files?
Can I convert a full memory card from RAW to DNG?
What about the size of the files? Do they more or less MB?
Is there a loss of quality?
I imagine it does take a long time (relatively speaking) to convert a 50MP raw to DNG, but I haven't timed it.
You can convert a full folder of RAWs to DNG, they'd have to be on your hard disk, I think it would take forever if you were trying to write them back to the camera card.
DNGs are usually smaller than RAWs.
There is no loss of quality if you select "loss-less" conversion. There is also a "lossy" conversion which has minor loss of quality, but I think few people would notice.