Do I need maker notes in a jpeg?

[Alan Clifford]

Do I need maker notes in a jpeg?  Especially as it has been corrupted.

exiftool  -all= -tagsfromfile @ -all:all -unsafe -F dscf1049_crb5.jpg

Code Select Expand

Warning: Bad MakerNotes offset for NoiseReduction - dscf1049_crb5.jpg
    1 image files updated

There is still an error when repeated, so

exiftool  -a -all= -tagsfromfile @ -all:all -unsafe -F dscf1049_crb5.jpg

Code Select Expand

Warning: Bad MakerNotes offset for NoiseReduction - dscf1049_crb5.jpg
Warning: Bad MakerNotes offset for tag 0x0003 - dscf1049_crb5.jpg
Warning: [minor] Bad format (2311) for MakerNotes entry 18 - dscf1049_crb5.jpg
Warning: [Minor] Too many warnings -- MakerNotes parsing aborted - dscf1049_crb5.jpg
Warning: Error rebuilding maker notes (may be corrupt) - dscf1049_crb5.jpg
Warning: Bad MakerNotes offset for tag 0x0005 - dscf1049_crb5.jpg
Warning: Bad MakerNotes offset for tag 0x0005 - dscf1049_crb5.jpg
Warning: Bad MakerNotes offset for tag 0x0003 - dscf1049_crb5.jpg
Warning: Bad MakerNotes offset for tag 0x0004 - dscf1049_crb5.jpg
Warning: Bad MakerNotes offset for tag 0x0004 - dscf1049_crb5.jpg
Warning: [minor] Bad format (300) for MakerNotes entry 15 - dscf1049_crb5.jpg
Warning: Invalid size (3640590336) for MakerNotes tag 0x0000 - dscf1049_crb5.jpg
Warning: [minor] Bad format (1284) for MakerNotes entry 17 - dscf1049_crb5.jpg
    1 image files updated



It's looking grim.  So adding a -m appears to wipe out the errors as I was expecting.
exiftool -m  -a -all= -tagsfromfile @ -all:all -unsafe -F dscf1049_crb5.jpg

So I'm wondering if wiping out maker notes in a jpeg cause any problems?  "Social networking" sites seem to zap all metadata so I think I should be OK.

[Phil Harvey]

Hi Alan,

You are the best one to answer this question.

Maker notes are important to me because I often want to see what lens and camera settings I used for a picture.

Also, the maker notes may be needed if you plan to use OEM software to make certain image corrections (ie. lens distortion correction).

- Phil