On 24/9/03, [EMAIL PROTECTED] disgorged: >Had a play with a *istD in a local camera store today. I'd have to say I >was impressed. > >I took along my CF card to grab some shots, and took a few RAW files to have >a peek at. For anyone who is interested in technical details, these are in >fact TIFF files with a .PEF extension. > >Most TIFF loading someware won't directly work with them, as they are >12bit/channel, and have only a single channel. The Photometric identifier >is also something I don't recognise, and isn't documented in the TIFF >headers... no doubt some GRGB bayer photometric. Hopefully Pentax will make >documentation of custom photometric IDs and tiff tags available. > >In any case, this makes the files trivial to parse and load for us third >party types, well done again Pentax. > >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? > >It may also be of interest that the PEF file seems to be 3040x2024 >resolution, with all pixels seemingly active. Various other RAW files I've >used have the entire sensor area (which Pentax quote as 3110x2030), but have >black (masked) areas present. > >I am not sure yet if the PEF contains the appropriate ICC profile to >correctly convert the file.
....er.... but did it take a nice shot....? Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=====| www.macads.co.uk/snaps _____________________________ Free UK Mac Ads www.macads.co.uk
