On 19 Jan 2004 at 8:14, Jens Bladt wrote: > Hi Rob and other *ist D owners. > I'm having a dicussion with my brother: Will I loose (visible) data when > shooting/saving files in camera as JPEG's.
Relative to RAW significant data may be lost depending upon the range of illumination of the scene however using the current Pentax RAW convertor you may loose the advantage slightly due to it's relatively poor edge performance. > Is ther a visible difference betwen RAW shots, converted to TIF and a low > compression (best) JPEG shot. Your answer will be highly appreciated. Relative to TIFF the JPEG compression rate is so low (my full res 200ISO low compression JPEG files vary from 606k to 4669k per image) that there is only faint signs of JPEG compression artifacts under magnification. You would have to have a special need for TIFF files to justify saving in-camera TIFF. RAW would give you some advantage in latitude, reasonable file sizes and some advantage to be able to alter colour balance etc after the fact. The RAW convertor isn't the best at the moment, the contrast and sharpening controls have a different effect to the in-camera processing and also there is the edge issue. Hopefully soon there will be improvement on the Pentax product and native support under PShop etc. The other thing to consider is that RAW conversion puts another pretty slow and laborious step in your image processing flow. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
