Pentax lenstype

[metropolis]

Hello,

I'm discovering exiftool and i find it very helpful . But for the moment, i have a problem with some tags in the makernotes.On my Pentax K10D,  I use a samsung lens (50-200) , which is the same as the pentax model, but not for DxO Optics Pro. So, i want to change lenstype in the makernotes. I use 'exiftool -lenstype="Pentax smc DA 50-200 f/4-5.6 ED"', but exiftool reply to me '0 image files updates / 1 image files unchanged". I used -F option, nothing happened too.

Maybe there is another way to do that, but after reading FAQ and some anwsers in the forum, i'm lost. Can anybody help me

[Phil Harvey]

You will have limited success if you spell the lens name correctly, ie) -lenstype="smc PENTAX-DA 50-200mm F4-5.6 ED".

The only problem is that in K10D images the LensType is stored in two separate locations and only one of these is writable (because there are 2 unknown bytes in the unwritable version that I don't want to destroy in case they hold useful information).  But it is likely that Dx0 reads the writable version of this tag.

- Phil

[metropolis]

OK, i used the correct spell, but i still have an error : "error renaming imgp0307.pef". It's odd. A mistake from my own ?

[Phil Harvey]

Check to make sure that you have write permission for the file imgp0307.pef.  exiftool will try to rename this to imgp0307.pef_original when it writes the new file.

- Phil

[metropolis]

Phil, you're great. I succeeded when i realized that under Vista, i need to be administrator. Now, it's okay and DxO accept modifications so i can use the pentax 50-200 optical module.
So i think i will use for a long time now exiftool and recommand it for my friends.

Thank you again.