I always recommend:
- Importing from camera card
- Making an immediate backup of the originals
- Formatting the card in the camera to wipe all data and prepare it for the next shoot.
This was an import directly from the camera on freshly formatted cards. I still have all the original files as they are on 2 x 64G cards in the camera but I was importing periodically over the course of a 4 day location shoot to avoid having to import 3,000 images at once (rendering 1:1 previews) to save time. When Lightroom connects to my camera it normally greys out all previously imported files and will only import the new shots taken since last backup, which I though could have worked ok on this particular location shoot.
If I can't find a solution I'll just create a new catalogue and import all the images in one go.
OK it should work if you are adding each new batch from the camera to the same destination folder. I do import batches when on vacation although I use the stand alone DNG Converter – see image below. It seems like an extra step but I find it quicker to “Add” to the catalog after the conversion than using Copy & Convert to DNG.
Thanks, I wasn't aware of the Adobe Digital Negative Converter software, I'll give it a try and see about incorporating it into my workflow a sit would give Lightroom one less task to perform on importing.
You can get the latest free DNG converter 9.1.1 for Windows or Mac from the following link. The DNG files will then work with your present software (keep your originals as backups and for use in the camera manufactures software)
To download click here - DNG Converter 9.1.1