Quoting Godfrey DiGiorgi - > I've tested TIFF output against JPEG highest-quality on four > different cameras. There are differences, certainly, but > insignificant to image quality
Thanks for the input. This has been my understanding but I've never taken the time to quantify. > When you open JPEG files for editing, immediately save them as .PSD > or .TIF for editing purposes. Only resave to JPEG when you're done > editing. You will not see any noticeable increase in noise or > artifacts that way, even at maximum size prints. Pretty much my mode with JPEGs, except I very seldom ever resave them to JPEG. Kenneth Waller ----- Original Message ----- From: "Godfrey DiGiorgi" <[EMAIL PROTECTED]> To: "Pentax-Discuss Mail List" <[email protected]> Sent: Thursday, June 15, 2006 2:08 PM Subject: Re: Shooting Digi in JPEG Mode > On Jun 15, 2006, at 10:09 AM, Kenneth Waller wrote: >>> No quality losses when saving the first JPEG after editing. >> >> I guess I knew that but haven't observed the difference. Has anybody? > > I've tested TIFF output against JPEG highest-quality on four > different cameras. There are differences, certainly, but > insignificant to image quality. > > I see absolutely no point to saving TIFF files in-camera. They're > huge, they are just 8bit RGB rendering (same as JPEG), they take > forever to save, and they don't provide anything useful over JPEG > highest-quality. > > When you open JPEG files for editing, immediately save them as .PSD > or .TIF for editing purposes. Only resave to JPEG when you're done > editing. You will not see any noticeable increase in noise or > artifacts that way, even at maximum size prints. > > I worked with cameras that don't have RAW format capture options > quite a bit (Sony F707/717, Panasonic FZ10). I made many thousands of > excellent exposures with them and did a lot of editing with them too. > The results are very good if you've got the JPEG parameters set up > correctly. Making prints from them is not too big a deal, if the > scene dynamics fit into the JPEG dynamic range. > > But it's a heck of a lot easier to work with tricky lighting > situations using RAW format capture ... you have more dynamic range > to work with and don't have to keep on top of white balance, > contrast, saturation parameters to quite the same degree since these > are all set in the RAW conversion phase of the workflow rather than > in the camera. > > I don't find this additional step much of an issue, it's basically a > matter of setting all the RAW parameters and then batch-converting > the files to .PSD 16bit RGB or .JPG 8bit RGB depending upon what I > need as output. 100-300 exposures usually takes about 10 minutes to > get to that point. I'd rather have the ability to adjust things and > the additional dynamic range than have to fiddle so much with the > camera and bracket so much. > > Godfrey > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
