I have downloaded the DNG converter and updated all my software, but if the files are not being read at all, how am I supposed to convert them?
You use the DNG converter (version 8.7 or later) to convert the RAW to DNG. This is a separate step, outside of Lightroom, before you import. Then th DNGs will be import-able into Lightroom 4.
I usually shoot in Raw and JPEG to cover myself, but this time Lightroom isn't reading either format.
If your card has both JPG and RAW, Lightroom isn't reading the JPGs? Could you give us the error message or describe what is happening? Also make sure that the option to treat JPG next to RAW as separate photos is checked. Lightroom Help | Set import preferences
Hi thanks for being so fast :) In the import box in Lightroom the message is simply "Preview unavailable for this file" for all of my .CR2 files - the jpegs are not even being shown.I have never used the Converter, so will have a shot at it now. I watched one of the tutorials and it said you could import as a Raw and then convert, but I cant import the photos anyway, so don't know how that will work :/
The DNG converter is a stand-alone program separate from Lightroom. Once you have converted your RAWs to DNG you can then import the DNGs into Lightroom. When Lightroom can read the RAWs directly it also can convert them to DNG but that of course doesn't help in your situation.
As far as reading the JPGs, have you checked the setting DJ mentioned? It doesn't matter what camera generates a JPG. Lightroom should be able to import it.
Just tried those things. Checked the preset and it was unchecked so now I can see the Jpegs Also have converted the Raws to DNG even though I couldn't preview them and they have appeared on the import too So I am happy with that. Thanks very much. But I just don't understand why LR isn't reading the Raw files in the first place?
It's because your software pre-dates the camera. But DNG is backward compatible.
Every camera has to be “profiled” (the process of determining the precise color mapping from sensor values to standard pixel values by analyzing raw photos of standard color targets and doing some number crunching) before Adobe software can process the raw files. While a lot of the profile is in the Adobe external camera profile files, some is in the code within the raw converter.
LR 4 stopped being updated before the 7D Mark II came out, so it doesn’t know what the 7D2 profile is. DNGs contain both the raw data and the profile (and other processing hints) so older Adobe software has enough information to work with to produce standard pixel values from the sensor data.