Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-03-2010, 02:38 AM   #1
Veteran Member
DaveHolmes's Avatar

Join Date: Jul 2010
Location: Yorkshire
Posts: 1,501
RAW file types and differences...

I'd been shooting in RAW the other day and then couldn't open my files on my Girlfriends laptop (she has PS-CS4).
I've got the 'RAW File Format' on my K-x set to PEF and it opens fine in Lightroom on my laptop...

PEF vs DNG... And... Should I switch file formats or stay PEF?

Please discuss...

11-03-2010, 03:40 AM   #2
Junior Member
cloudphreak's Avatar

Join Date: May 2010
Location: Ashburn, VA
Photos: Albums
Posts: 30
If she has the Adobe Camera Raw plug-in installed, PEFs should open fine. Until recently I was using Photoshop Elements 6 (3 versions old!) and with the appropriate version of ACR installed I was able to open PEFs with no problem. I have since upgraded to Elements 9 and just decided to change raw formats to DNG since I plan to use Elements for raw processing and not the Pentax Digital Camera Utility (because I find the interface completely confusing). To my untrained eye, I can't tell the difference between PEF and DNG. Just my 2 cents...
11-03-2010, 04:09 AM   #3
JHD
Veteran Member




Join Date: Jan 2010
Photos: Albums
Posts: 1,407
Good question - been wondering about that myself but haven't check the manual. I didn't notice any issues with the bundled software using PEF, but for some reason DNG doesn't let me adjust the exposure.
11-03-2010, 05:36 AM   #4
Veteran Member
DaveHolmes's Avatar

Join Date: Jul 2010
Location: Yorkshire
Posts: 1,501
Original Poster
Cheers for the quick replies :-)

QuoteOriginally posted by cloudphreak Quote
If she has the Adobe Camera Raw plug-in installed, PEFs should open fine
She more than likely does not... I shall sort this out for her if I get chance/remember


QuoteOriginally posted by cloudphreak Quote
I have since upgraded to Elements 9 and just decided to change raw formats to DNG since I plan to use Elements for raw processing
I use Lightroom3 but this is (previously been using Irfanview) still fairly new to me... Would I be better off switching to DNG also?


QuoteOriginally posted by JHD Quote
but for some reason DNG doesn't let me adjust the exposure.
Is this going to happen in Lightroom also?

Cheers all... Glad you're here :-)

11-03-2010, 09:46 AM   #5
Site Supporter
SpecialK's Avatar

Join Date: Dec 2006
Location: So California
Photos: Gallery
Posts: 14,901
PEFs have slightly smaller file sizes. DNG is a standard file type that other programs can read. The popular programs now read PEFs (with the exception of your girlfriend's), so for casual use it does not really matter.

I'm sticking with Elements 6 :-)
11-03-2010, 10:18 AM   #6
Veteran Member




Join Date: Dec 2009
Location: Sacramento, CA
Photos: Gallery | Albums
Posts: 728
As other mentioned, she probably hasn't updated Adobe Camera Raw plug-in. Adobe updates this every so often to support new cameras being released, both in Photoshop and Lightroom. For example, if you had a K-5 and shoot with PEF, it is still not yet supported by Adobe, but it's only a matter of time.

I say switch to DNG for greater compatibility. I believe there are other threads that have come to the conclusion that there is no drastic difference in quality between PEF or DNG, aside from a slightly smaller file size as mentioned above.
11-03-2010, 05:18 PM   #7
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
I switched to DNG when the K10 came out because Adobe was being really slow to update ACR to read the K10 PEF files.
I've never bothered to switch back as I see no advantage to doing so, and several disadvantages.
I can open my K7 DNG files (and I presume my K5 files) in Photoshop 7 ACR, which is a 5 generation old software.
Not having to have the most up to date software to open files is a definite plus for me, even though I am using CS5.
11-03-2010, 06:26 PM   #8
cpk
Site Supporter
cpk's Avatar

Join Date: Feb 2010
Location: Montreal
Posts: 234
DxO tech support suggested I use the PEF format as it is Pentax's native format. DxO was having issues with the DNG format which I had been using prior to starting to use DxO software. Now I shoot PEF files, do my initial processing in DxO, and convert them on output to the DNG format which I then process in Lightroom. Which to use would depend on the user's workflow.

11-03-2010, 06:35 PM   #9
Pentaxian
bobmaxja's Avatar

Join Date: Mar 2010
Location: Laval, Quebec Canada
Posts: 1,736
I am using PEF with ACDsee Pro 3 with no problem . I can also use DNG
11-04-2010, 08:55 AM   #10
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
QuoteOriginally posted by cpk Quote
DxO tech support suggested I use the PEF format as it is Pentax's native format. DxO was having issues with the DNG format which I had been using prior to starting to use DxO software. Now I shoot PEF files, do my initial processing in DxO, and convert them on output to the DNG format which I then process in Lightroom. Which to use would depend on the user's workflow.
Was DXO having issues with DNG or were they just in some sort of peeing match with Adobe?
I'd find it quite surprising that DXO could reverse engineer everyone's (closed) RAW files, but they couldn't do the same with what is, essentially, an open source file system.
11-04-2010, 02:02 PM   #11
cpk
Site Supporter
cpk's Avatar

Join Date: Feb 2010
Location: Montreal
Posts: 234
QuoteOriginally posted by Wheatfield Quote
Was DXO having issues with DNG or were they just in some sort of peeing match with Adobe?
I'd find it quite surprising that DXO could reverse engineer everyone's (closed) RAW files, but they couldn't do the same with what is, essentially, an open source file system.
This was last December when I was just starting to use DxO and was having trouble defining my workflow. I was told that Optics Pro required the native file outputs of the camera and that it was not set up to process DNG files from Pentax cameras; although they were reviewing a process to handle these DNG files. Since then I have followed the workflow described above, and it has ceased to be an issue for me. I do not know if they ever did implement that process for handling Pentax DNG files.
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, pef, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
File Size for Raw john mood Pentax DSLR Discussion 23 01-04-2012 12:46 PM
How to save stitched RAW files to a RAW file? HermanLee Digital Processing, Software, and Printing 7 07-09-2010 05:51 PM
K7 RAW file size candgpics Pentax DSLR Discussion 9 04-07-2010 09:43 PM
Differences in RAW processors maxwell1295 Pentax DSLR Discussion 11 05-10-2008 07:52 PM
DNG K20D (differences in types of?) augustmoon Digital Processing, Software, and Printing 9 05-03-2008 04:32 AM



All times are GMT -7. The time now is 05:53 AM. | See also: NikonForums.com, CanonForums.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