On Fri, Dec 11, 2009 at 05:07:53AM +0000, mike wilson wrote: > John Francis wrote: > >> On Thu, Dec 10, 2009 at 08:14:32AM +0000, mike wilson wrote: >> >>> Charles Robinson wrote: >>> >>> >>>> Last year (2008) I totally screwed up and lost (yes, lost) a whole month's >>>> worth of images due to inconsistencies in my backup process. >>>> >>>> I realized just recently that all of the 1:1 previews from May of >>>> 2008 are still in my Lightroom database (despite a setting which >>>> says to remove them after a month!). >>> >>> Glad that this worked out for you but it demonstrates cleary what I >>> loathe about Adobe products. Why should this programme _duplicate_ >>> the full image file? Utter bloatware behaviour. >> >> >> Not really. Lightroom is aimed at photographers who shoot a lot of RAW >> images. The difference in size between a 640x480 preview JPG and a 1:1 >> preview isn't that great, and both are much smaller than the original. >> >> Pentax do the same thing in a PEF; it includes a full-resolution JPEG >> (used, I believe, by both the in-camera review and the Pentax Browser). >> Or, at least, they did when I last poked around inside a PEF. I don't >> know for certain that this behaviour continues with the later cameras, >> or if DNGs also contain this full-size preview, but I'd assume so. > > So all Lightroom has to do is extract the jpeg from the raw file as > asked, not build a whole new library.
No - the JPEG in a PEF is created using Pentax's in-camera default processing setting, very low quality, etc., etc. Lightroom wants a preview built using *it's* settings. And, strange as it may seem, Adobe want to sell Lightroom to people who own other brands of camera besides Pentax, so they're not going to base their whole strategy on a feature that may not be found in some other raw file formats. The one thing Adobe know is that if Lightroom is going to be able to process an image, it will be able to read the image bits somehow. Relying on being able to read anything else would be a bad design. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
