On Wed, May 20, 2009 at 09:36:29PM -0700, Joseph McAllister wrote: > I would guess that CA reduction and perspective correction could / would be > done post capture, but prior to offloading the card. After all, all the > information about the taking lens is there in the metadata. It's just a > software routine with sub-routines for each lens model that it can cover.
It can be done in the in-camera RAW converter, which is probably where I'll use it most often. > It would be nice if over time Pentax did run through the older lenses CA / > Distortion to update the firmware for A*, F*, FA*, then A, F, and FA. And > so forth. And a way to tell the camera a bit more than the focal length. If So, apparently, there's no lens data in the firmware -- it's all communicated by the lens. And that communication started with the DA series, even though there weren't yet bodies with the ability do do something with the data. (So says JohnCPentax on the dpreview forums.) > not in camera, then perhaps the Pentax software in computer could create a > file from the corrections you would make to an images or three from one of > these older lenses to correct for CA & Distortion, which could then be > loaded into the sub-routine cue of the camera's firmware. Sure -- there's software to do this already. Noteably DxO, but in the open source world, there's Fulla. <http://wiki.panotools.org/Fulla> -- Matthew Miller [email protected] <http://mattdm.org/> The Definitive Pentax P-TTL Flash Model Guide: <http://pttl.mattdm.org/> -- 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.
