Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-22-2016, 06:33 AM   #16
Moderator PEG Judges
Kerrowdown's Avatar

Join Date: Aug 2008
Location: Highlands of Scotland.
Photos: Gallery
Posts: 30,699
QuoteOriginally posted by SKYGZR Quote
DNG vs. .PEF
I use DNG exclusively rather than Pentax own proprietary PEF, especially made more poignant when there are Pentax cameras out there, that don't support PEF... K-500, K-50, K-30, K-01 to name a few and there may well be others.

05-22-2016, 06:37 AM   #17
Pentaxian
newmikey's Avatar

Join Date: May 2007
Posts: 1,463
QuoteOriginally posted by Kerrowdown Quote
I use DNG exclusively rather than Pentax own proprietary PEF, especially made more poignant when there are Pentax cameras out there, that don't support PEF... K-500, K-50, K-30, K-01 to name a few and there may well be others.
Yep. Ever noticed that all of the newer Pentax bodies have PEF? I tend to see this as Pentax having recognized they have nothing to fear from maintaining their own proprietary format, possibly even working to have one-up over DNG.
05-22-2016, 06:45 AM   #18
Pentaxian




Join Date: Sep 2013
Photos: Albums
Posts: 817
QuoteOriginally posted by newmikey Quote
I'm fine with anyone using DNG, to be honest. Just not with people who claim it is more "future-proof" than PEF - that's baloney and FUD.
How is storing image data, in an open file format, in any way NOT future proof? Given the overwhelming number of canon, Nikon, Sony, and Olympus users out there who are also using DNG, you also have strength in numbers (compared to Pentax, which by all accounts is a fairly small market share). Arguing in favour of PEF over DNG as a long term archival format is a bit of stretch imho.
05-22-2016, 06:52 AM   #19
Moderator PEG Judges
Kerrowdown's Avatar

Join Date: Aug 2008
Location: Highlands of Scotland.
Photos: Gallery
Posts: 30,699
QuoteOriginally posted by newmikey Quote
possibly even working to have one-up over DNG
As both are RAW formats, how can one be better? at the end of the day I guess it comes down to workflow choices and what works for you, me I like the fact with DNGs processed with ACR, there are no sidecar xmp files to consider.

05-22-2016, 07:02 AM   #20
Pentaxian
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 3,901
RAW files are just containers for the un-manipulated image data in a TIF compatible format. It's how and what auxiliary metadata is stored that is the makes the difference.

The way I look at is that you are dependent on Ricoh to implement the DNG files correctly. Even though Adobe licences/publishes specifications or issues RDKs Ricoh could always screw up. Then you'd have to wait for a firmware update and in the meanwhile you'd have to workaround whatever screw-up there was in the DNGs.

And even if you use DNGs they may not be handled correctly - look at Lightroom and Pixel Shift with Motion Correction files.

But then again if you use PEFs you have to wait until whatever software you are using other than DCU can handle the latest PEF.

I find it troubling that while my K10D can save RAW files as DNG I can take a PEF file and convert it to a DNG via Adobes DNG converter. If I put the DNG file on the card in my K10D it is not recognized. Of course it may be that the earliest version (Camera Raw 2.4) that my version of converter will save as is newer than what the K10D (latest firmware) can recognize.
05-22-2016, 07:46 AM - 1 Like   #21
Forum Member




Join Date: Feb 2014
Location: Vancouver, BC
Posts: 89
QuoteOriginally posted by Kerrowdown Quote
As both are RAW formats, how can one be better? at the end of the day I guess it comes down to workflow choices and what works for you, me I like the fact with DNGs processed with ACR, there are no sidecar xmp files to consider.
There's a slight advantage, beyond format futureproofing, to DNGs created from PEFs via Adobe software: they get checksums, which out-of-camera PEFs and DNGs do not have. This checksum is checked by Adobe (and possibly other) software, which will alert you when a file has been corrupted so you can restore it from backup.
05-22-2016, 08:56 AM   #22
Pentaxian
newmikey's Avatar

Join Date: May 2007
Posts: 1,463
Why I Stopped Using the DNG File Format

Kevin Patrick Robbins is a commercial, editorial, and advertising photographer based in Hamilton, Ontario, Canada. He can explain this way better than I can.
05-22-2016, 09:27 AM   #23
Forum Member




Join Date: Feb 2014
Location: Vancouver, BC
Posts: 89
QuoteOriginally posted by newmikey Quote
Why I Stopped Using the DNG File Format

Kevin Patrick Robbins is a commercial, editorial, and advertising photographer based in Hamilton, Ontario, Canada. He can explain this way better than I can.
Basically what he says is: if you use Capture One as your raw converter, don't convert to DNG. Okay, but for those of us who don't plan on using Capture One, kind of irrelevant.

05-22-2016, 09:32 AM   #24
Moderator PEG Judges
Kerrowdown's Avatar

Join Date: Aug 2008
Location: Highlands of Scotland.
Photos: Gallery
Posts: 30,699
QuoteOriginally posted by newmikey Quote
He can explain this way better than I can.
As I already said "it comes down to workflow choices"

He's using Capture One and discussing camera systems that do not natively support DNG, so for him he considers those camera propriety files better for his workflow.
05-22-2016, 09:38 AM   #25
Senior Member
joergens.mi's Avatar

Join Date: Jan 2012
Posts: 230
QuoteOriginally posted by newmikey Quote
Why I Stopped Using the DNG File Format

Kevin Patrick Robbins is a commercial, editorial, and advertising photographer based in Hamilton, Ontario, Canada. He can explain this way better than I can.

Very interesting article.
05-22-2016, 09:43 AM   #26
Pentaxian
newmikey's Avatar

Join Date: May 2007
Posts: 1,463
People, you if can read no further between the lines than "oh, he's using Capture One and we don't so we're OK" I'm afraid the discussion here is pointless...

Last edited by newmikey; 05-22-2016 at 10:11 AM.
05-22-2016, 12:04 PM   #27
Site Supporter
acoufap's Avatar

Join Date: Jan 2011
Location: Munich, Germany
Photos: Albums
Posts: 702
QuoteOriginally posted by bar_foo Quote
Basically what he says is: if you use Capture One as your raw converter, don't convert to DNG. Okay, but for those of us who don't plan on using Capture One, kind of irrelevant.
We have to understand that dng and pef are both native Pentax formats and pef is a proprietary one. If you want to use Capture One as I do, simply use dng native from the camera. It's that easy and has nothing to with Adobe applications. Adobe seems to use the dng format as "workspace containers" for their applications and stores working instructions in it and CO simply doesn't understand these application specific dng containers.

I think I somewhere read that if you embed the original pef file into the dng file during the conversion process (an option of the conversion software), CO can work with these dng files if the original pef file format for the specific camera is supported.
05-27-2016, 07:33 PM   #28
Pentaxian




Join Date: Aug 2013
Photos: Gallery
Posts: 985
Forgive my ignorance, but which file is bigger, DNG or PEF?
05-27-2016, 08:53 PM   #29
Site Supporter
jatrax's Avatar

Join Date: May 2010
Location: Oregon
Photos: Gallery | Albums
Posts: 10,290
QuoteOriginally posted by totsmuyco Quote
Forgive my ignorance, but which file is bigger, DNG or PEF?
No significant difference. I recently tested with the K-1 and PEF files were about (on average) 300k smaller. On 45mb files that really doesn't matter.
05-27-2016, 10:35 PM   #30
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 26,233
QuoteOriginally posted by acoufap Quote
We have to understand that dng and pef are both native Pentax formats and pef is a proprietary one.
PEF is proprietary, but the structure is standards compliant to TIFF/EP structure and identifies as such in the header. As such PEF may be parsed by any compliant reader and readily programmed against. That may be why Dave Coffin has no problem staying up to date with PEF support in dcraw. For sure, proprietary metadata with processing "hints" remains proprietary, but the same is true with DNG.

In regards to DNG, the American Society of Media Photographers has published a set of best practices for using DNG. I found them interesting and useful:

DNG | dpBestflow


Steve

Last edited by stevebrot; 05-27-2016 at 10:46 PM.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, dslr, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
PEF vs DNG nanhi Pentax DSLR Discussion 57 10-28-2016 12:39 PM
Of Interest to Linux Users - PEF vs DNG gord lucas Pentax DSLR Discussion 34 01-28-2015 11:52 AM
PEF vs DNG in LR for K3 Spodeworld Pentax K-3 10 11-27-2014 12:22 AM
PEF vs DNG Fireball Pentax DSLR Discussion 19 07-21-2007 08:01 PM
PEF vs DNG Trub Digital Processing, Software, and Printing 7 06-15-2007 09:51 PM



All times are GMT -7. The time now is 06:18 AM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top