On Raws

[evilaro]

Hi:

Out my little knowledge I would like to know
a bit more on Raws in order to work with them.

a) could I assume that ALL raws come with a thumbnail?
b) Are this thumbnails a standard or each manufacturer makes them
    diferent in kbytes size, pixel size different etc
c) what happens with the thumbnail if you retouch the Raw...
    does it chages accordingly (I assume it is not so)

At last but not the least...
d) How do you get the thumbnail using exiftool?

Thanks

Emilio



   

[Phil Harvey]

a) exiftool does not extract thumbnails from all types of RAW images

b) typically thumbnails are 160x120 pixels, but not always

c) i don't know of any software that updates the native RAW image thumbnail (exiftool will write it, but you need to generate the image using some other software)

d) exiftool -thumbnailimage -b FILE > thumb.jpg

- Phil

[evilaro]

Thanks Phil:

That makes it very clear.

Emilio

a) exiftool does not extract thumbnails from all types of RAW images

b) typically thumbnails are 160x120 pixels, but not always

c) i don't know of any software that updates the native RAW image thumbnail (exiftool will write it, but you need to generate the image using some other software)

d) exiftool -thumbnailimage -b FILE > thumb.jpg

- Phil