Hi experts,
I am copying old slides with Canon digital camera in RAW format and importing to iPhoto on a Mac.
The meta-data shown is of no interest to me (it's of the re-shoot).
I want to delete all these meta-data, and write instead tags such as
MAKE = Nikon (although this tag doesn't really display in iPhoto)
MODEL = Nikon FM3a
LENS = Kodachrome slide (this would display in iPhoto just under the model)
Things tried:
1. Deleting all meta-data makes the CR2 file unrecognizable by iPhoto or DPP.
2. Ditto for deleting all the Makernotes.
3. Deleting individual tags gives me strange results:
Deleting ISO changes it from 1250 to 1234 (when I read the tag afterwords)
Deleting ExposureTime changes it from 1/100 to 1/102 (when I read the tag afterwords)
Deleting Lenstype makes no difference (when I read the tag afterwords)
And, in any case iPhoto, still reads the *original* values.
In short, after
exiftool -Make="Nikon" -Model="Nikon FM3a" -lens="Kodachrome" -ISO= -ExposureTime= test.cr2
everything looks the same in iPhoto -- except the Model which is now Nikon FM3a.
I tried many other things (too long to list), to no avail.
Any advice will be greatly appreciated.
BTW, things work a lot better with tif files.
Ami
Hi Ami,
I do not recommend that you try to delete any metadata from raw images. Much of this is required in order to be able to develop the image properly.
- Phil
Thanks Phil,
Looks as if to see metadata about the original equipment used in shooting these slides, the file will have to be converted to tiff (at double the size).
~Ami
I really have no idea what you are talking about. You can see the metadata in the original RAW image using ExifTool, and I thought the problem was that you wanted to remove it.
- Phil
Quote from: Phil Harvey on April 24, 2013, 07:34:58 AM
I really have no idea what you are talking about. You can see the metadata in the original RAW image using ExifTool, and I thought the problem was that you wanted to remove it.
- Phil
Phil, he wants to create metadata relevant to the original slides.
Exactly, thanks Alan.
I shot slides 20-30 years ago with some equipment. I am now copying them using Canon digital camera with RAW format. The mata-data is mostly uninteresting to me. I'd like to erase it and write a few new fields describing the original shoot. It appears that I can do it rather simply if I convert RAW to tiff, but doing this in RAW was unsuccessful (which is what my original post was about).
Hi Ami,
Sorry, I'm still not clear about your question. You want to know how to delete metadata from TIFF images? If so, then FAQ number 7 (https://exiftool.org/faq.html#Q7) may be of interest.
- Phil
Hi Phil.
Let me try and explain again.
I shot many slides 20-30 years ago with some equipment. I am now copying them using Canon digital camera with RAW format. The mata-data in the Canon images is mostly uninteresting to me. I'd like to erase it and write a few new fields describing the original equipment used (e.g., camera model, lens, film type, date).
I know I can do it with TIFF images, but I have been unsuccessful in doing it with RAW images. For example,
exiftool -Make="Nikon" -Model="Nikon FM3a" -lens="Kodachrome" -ISO= -ExposureTime= test.cr2
Doesn't change anything except the Model.
If you confirm that I cannot accomplish this, then I'll convert the images to TIFF and then change the metadata.
Thanks
Ami
Hi Ami,
Yes. This is definitely a bad thing to do to RAW images.
- Phil