Filmscanners mailing list archive (filmscanners@halftone.co.uk)
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[filmscanners] RE: dpi - formerly PS sharpening
Hi Paul,
> JPEG and TIFF both store horizontal and vertical dots per inch in their
> headers.
Yep, but in TIFF the tag is called "resolution", not "DPI"...
> GIF and BMP don't. I haven't checked other formats, but I expect
> any modern format do.
Do they store image dimensions, like inches? They must, since when I read
in a .bmp file, it knows the exact image size (and resolution). Hum. Are
you sure .bmp files don't store resolution? The image I read into PS was
509 x 761 pixels...at 72 PIXELS/inch...and the dimensions were 7.069 x
10.569...obviously, the 72 is a much rounder number to store ;-)
Yes, this stuff is REALLY esoteric...
Regards,
Austin
----------------------------------------------------------------------------------------
Unsubscribe by mail to listserver@halftone.co.uk, with 'unsubscribe
filmscanners'
or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or
body
|
