I traditionally shoot on Nikon products but am second shooting on Canon tomorrow and wanted to test out the gear.
When trying to import images taken today on the Canon D5S R, I received the thumbnail of "preview unavailable" and the images would not import. I tried moving them onto the desktop and a hard drive first but no luck importing them.
I downloaded the Adobe DNG converter and that seems to be the only way the images will import to Lightroom. The problem here is that it is taking hours to import maybe 100 images when I will be taking a thousand or so for the weddings.
Is there any other solution to import other than the DNG converter?
Yes, you can upgrade to Lightroom 6 or subscribe to the Creative Cloud and install Lightroom CC 2015.
Going back a step, Raw file formats are unique to every camera model. Every time a new camera is released, software has to be updated to support it. That includes all software manufacturers (Adobe, Capture One, ON1 etc)
Updates are free if they are part of the manufacturers minor update cycle. Upgrades are generally paid for if the Raw file update is included in a manufacturers major upgrade cycle. 5DS R support came between Lightroom 5.7 and Lightroom 6.0.
The Canon 5DS R has been supported since Lightroom 6.0 (Refer Camera Support table in the link above). So Lightroom 5 users cannot get this update for free. They must first convert to DNG.
So your options are :