"tom" <[EMAIL PROTECTED]> wrote: >> -----Original Message----- >> From: Mark Roberts [mailto:[EMAIL PROTECTED] >> >> >> "Peter Loveday" <[EMAIL PROTECTED]> wrote: >> >> >My only complaint is that the 12 bit data is padded to 16 >> bit. This makes >> >the raw file bigger than it needs to be; they are over >> 12MB, where they >> >should only need to be 9MB or so. This reduces storage on >> CF, and slows >> >write times, seemingly unnecesarily. If anyone at Pentax >> is listening, >> >please could we have non-padded PEF files? >> >> ISTR that the Canon 10D (6-megapixel) RAW files are also >> 12MB - I think >> it was Tom Van Veen who told me that and I wondered at the >> time why they >> weren't 9MB. (Am I remembering this correctly, Tom?) > >No, they're 6 megs. When converted to 8 bit tiff, they're 18 megs. > >I thought a raw file was a sensor dump, and the size of the file >should correlate with the size of the sensor?
It should: 12 bits (1.5 bytes) per pixel for cameras that do 12-bit RAW. -- Mark Roberts Photography and writing www.robertstech.com
