Originally posted by pschlute In-camera you are viewing the jpeg preview that is contained within the raw file. When you open them in ACR you are viewing the raw image. Have you tried updating ACR or tried another converter ?
Thanks Peter, the ACR is the latest CC version. The problem also shows in DCU5 - saving the DNG as JPEG or TIFF, both end up with faulty versions.
For now I've swapped to writing a RAW and a JPEG to see if there's something recoverable when it happens again.
I'm still puzzled with what might be going on here. The embedded JPEG is obviously fine, but something in the RAW file isn't. ACR and DCU5 both convert the RAW file to show a corrupted version. I'm beginning to wonder if there's some interaction between the Cactus trigger and the camera, perhaps during the writing to the cards, though as it is corrupting both card's RAW file, it is unlikely to be a transient effect, unless the cards are really written in parallel, which I don't believe they are.
---------- Post added 08-18-19 at 11:54 AM ----------
Originally posted by Tau-Ceti Hmm, looks to me like a corrupted file. I am very certain, that this was caused by a defective sector on a SD card.
As you said, you copy them from one card to another AFTER the data was written to one card. Try using the redundancy setting for your SD cards.
There are several Tools with which you can test them for Errors.
For example H2testw from the Heise Media Group. (The tool basically fills up your storage and then checks the written data for errors.)
H2testw | heise Download Thanks for helping. I am using the dual card setting in camera, so it's not likely to be a card problem as they both exhibit the problem. More likely to be a writing problem, perhaps related to the trigger ????