Re: Bit selection for Pentax RAW file?
One must remember, as much as we love Herb (well, I like him!) that 16 bit might be overkill. I've done the tests. I like 8 bit. Joseph Tainter wrote: Herb wrote: i'm surprised you see any difference. that isn't the point. the point is that 8-bit mode allows you a few manipulations before you see artifacts. 16-bit mode allows you quite a bit more before that starts to happen. Thanks, Herb. I wasn't aware of that. I may now try more 16-bit editing.
Re: Bit selection for Pentax RAW file?
A number of people have commented on 16 or 8 bits with respect to RAW file conversion: The current issue of Photo Techniques Magazine has an excellent article written by Norman Koren on getting the most from a RAW file. While the article is not available on line, here is a link to the magazine's web site. http://www.phototechmag.com/current.htm If you haven't seen Koren's web site, you've missed out on a lot of info. Here's the link. http://www.normankoren.com Much of the content of the article, and quite a bit of theoretical info not included in the article is on Koren's web site here: http://www.normankoren.com/digital_tonality.html See you later, gs --
Re: Bit selection for Pentax RAW file?
Herb wrote: i'm surprised you see any difference. that isn't the point. the point is that 8-bit mode allows you a few manipulations before you see artifacts. 16-bit mode allows you quite a bit more before that starts to happen. Thanks, Herb. I wasn't aware of that. I may now try more 16-bit editing. Joe
Re: Bit selection for Pentax RAW file?
bringing up shadow detail is where the difference is most noticeable. Herb - Original Message - From: Joseph Tainter [EMAIL PROTECTED] To: pdml [EMAIL PROTECTED] Sent: Sunday, April 18, 2004 12:41 PM Subject: Re: Bit selection for Pentax RAW file? Herb wrote: i'm surprised you see any difference. that isn't the point. the point is that 8-bit mode allows you a few manipulations before you see artifacts. 16-bit mode allows you quite a bit more before that starts to happen. Thanks, Herb. I wasn't aware of that. I may now try more 16-bit editing. Joe
Re: Bit selection for Pentax RAW file?
What are you ultimately going to do with the images? If you will print them, or have them printed, the output device will print them at 8 bits. I use 16 bits only for the most important images. Even still, onscreen, I can see very little difference between 8 and 16 bits. So I rarely use 16 bits. The PEF importer will import images at 16 bits. If you want them to be 8 bits, you must convert them. This takes just 3 clicks. Joe
Re: Bit selection for Pentax RAW file?
i'm surprised you see any difference. that isn't the point. the point is that 8-bit mode allows you a few manipulations before you see artifacts. 16-bit mode allows you quite a bit more before that starts to happen. Herb - Original Message - From: Joseph Tainter [EMAIL PROTECTED] To: pdml [EMAIL PROTECTED] Sent: Saturday, April 17, 2004 3:29 PM Subject: Re: Bit selection for Pentax RAW file? I use 16 bits only for the most important images. Even still, onscreen, I can see very little difference between 8 and 16 bits. So I rarely use 16 bits.
Re: Bit selection for Pentax RAW file?
--- Joseph Tainter [EMAIL PROTECTED] wrote: What are you ultimately going to do with the images? If you will print them, or have them printed, the output device will print them at 8 bits. I will archive PEF file. I will import temporarily when its needed. Some numbers for a sample image PEF- 13MB Imported 8bit TIFF 7MB Imported 16bit TIFF 37MB I was using Nikon LS-4000; compared to its file sizes, DSLR's 13MB is very much managable!!! Thanks Ramesh I use 16 bits only for the most important images. Even still, onscreen, I can see very little difference between 8 and 16 bits. So I rarely use 16 bits. The PEF importer will import images at 16 bits. If you want them to be 8 bits, you must convert them. This takes just 3 clicks. Joe __ Do you Yahoo!? Yahoo! Photos: High-quality 4x6 digital prints for 25ยข http://photos.yahoo.com/ph/print_splash
Re: Bit selection for Pentax RAW file?
On 16 Apr 2004 at 18:13, Ramesh Kumar wrote: Hi, I am using Adobe7 to convert PEF files into TIFF. During this conversion, I think, I should select 16bit. Am I right? If you are using the Pentax RAW Plugin as an import filter for PS7 then the files will be imported as 16 bits per colour channel. There is no option to choose 8 bits per colour pixel for import in my version, what import filter are you using? 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
Re: Bit selection for Pentax RAW file?
On Friday, Apr 16, 2004, at 21:13 America/New_York, Ramesh Kumar wrote: I am using Adobe7 to convert PEF files into TIFF. During this conversion, I think, I should select 16bit. Am I right? You should select 16 bits if you want the best quality. However the TIFF files will also be large, so it depends on your storage constraints. btw, what do you use to convert PEF to TIFF in Photoshop 7? I had to upgrade to Photoshop 8 to get the Adobe RAW Plug-in to recognize PEF. --jc
Re: Bit selection for Pentax RAW file?
On 16 Apr 2004 at 22:30, Juey Chong Ong wrote: btw, what do you use to convert PEF to TIFF in Photoshop 7? I had to upgrade to Photoshop 8 to get the Adobe RAW Plug-in to recognize PEF. AFAIK the only PEF import filter that will work in PS7 is Pentax's own PENTAX RAW FILE Plugin Version 1.0.0.0 C2003 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
Re: Bit selection for Pentax RAW file?
I use PS CS. I had old version of plugin, I used to operate it using File/Import-Export/Raw plugin. This does not have BIT selection capablity. In this one, I had created action using File/Import-Export/Raw plugin In newversion of plugin, I can use File-Open to open a PEF file, a conversion dlg pops up with options to select bit setting, color space, DPI. In this case, I created action using File/Open. May be this PS CS thing. Thanks Ramesh --- Rob Studdert [EMAIL PROTECTED] wrote: On 16 Apr 2004 at 18:13, Ramesh Kumar wrote: Hi, I am using Adobe7 to convert PEF files into TIFF. During this conversion, I think, I should select 16bit. Am I right? If you are using the Pentax RAW Plugin as an import filter for PS7 then the files will be imported as 16 bits per colour channel. There is no option to choose 8 bits per colour pixel for import in my version, what import filter are you using? 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 __ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html
Re: Bit selection for Pentax RAW file?
Sorry my initial mail said PS7 that is wrong, I use PS CS. Ramesh --- Rob Studdert [EMAIL PROTECTED] wrote: On 16 Apr 2004 at 22:30, Juey Chong Ong wrote: btw, what do you use to convert PEF to TIFF in Photoshop 7? I had to upgrade to Photoshop 8 to get the Adobe RAW Plug-in to recognize PEF. AFAIK the only PEF import filter that will work in PS7 is Pentax's own PENTAX RAW FILE Plugin Version 1.0.0.0 C2003 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 __ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html
