On Fri, December 18, 2009 19:28, photoroy6@xxxxxxx wrote: > > You don't need to set the exposures at different plus factors as a thru > the > lens meter will compensate for the differences. Why go thru all the > trouble of three exposures when in Photoshop you can easily change color > balance, > selective color, curves contrast etc on any image, even a moving image. > Popular Photography is making precise measurements with colors under > test > conditions to show the differences between cameras. If I'm understanding him correctly, his hope is that his choice of color filters will let him, in the end, render purer and more accurate colors than the filters chosen by a digital camera manufacturer. In theory this is a perfectly reasonable hope. In practice, I'm doubtful. The filters he's using are long-standing standard tri-color filter sets. Thus, they were well-known to digital camera designers, and if they used something else, it was for a reason. (This does leave open the possibility that he cares more about color clarity than the digital designers, and thus will make different tradeoffs and get what he wants.) Of course, working in large format has its own advantages. -- David Dyer-Bennet, dd-b@xxxxxxxx; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info