Converting to DNG

On Mar 29, 10:51 am, "Colonel Blip"
wrote:

Hello, All!

Looking for advice from experienced RAW photo-folks. I am now taking photos in Olympus RAW and was wondering if I should make my workflow process include a step to convert all of these to DNG and delete the ORF RAW files? What is the preferred process here?

This varies so much from one person to another that all we can do is give you the facts, leaving you to make an informed decision. (For information, I use Pentax not Olympus, I’ve used DNG for nearly two and a half years, and except for the first 8 months I’ve converted to DNG from the memory card or portable storage device and deleted my PEFs).

There is LOTS of information about DNG here:
http://www.barrypearson.co.uk/articles/dng/

Some raw converters don’t (yet) support DNG – nothing from Olympus does:
http://www.barrypearson.co.uk/articles/dng/not_yet.htm

There have been problems with loss of some metadata when converting ORF files, but I don’t know what this data is, nor whether the problem still occurs. It doesn’t make any difference if you use Adobe products to handle you DNGs, because they don’t need that metadata. http://www.barrypearson.co.uk/articles/dng/safety.htm#comple teness

These are the potential benefits from using DNG. Not all people get all benefits, which is one reason things vary so much.
http://www.barrypearson.co.uk/articles/dng/benefits.htm

Some thoughts about workflow considerations here, including suggestions for ensuring you are resilient to a single point of failure.
http://www.barrypearson.co.uk/articles/dng/safety.htm#workfl ow

—
Barry Pearson
http://www.barrypearson.co.uk/photography/

wrote in message

On Mar 29, 10:51 am, "Colonel Blip"
wrote:

Hello, All!

Looking for advice from experienced RAW photo-folks. I am now taking photos
in Olympus RAW and was wondering if I should make my workflow process include a step to convert all of these to DNG and delete the ORF RAW files?
What is the preferred process here?

This varies so much from one person to another that all we can do is give you the facts, leaving you to make an informed decision. (For information, I use Pentax not Olympus, I’ve used DNG for nearly two and a half years, and except for the first 8 months I’ve converted to DNG from the memory card or portable storage device and deleted my PEFs).

There is LOTS of information about DNG here:
http://www.barrypearson.co.uk/articles/dng/

Some raw converters don’t (yet) support DNG – nothing from Olympus does:
http://www.barrypearson.co.uk/articles/dng/not_yet.htm

There have been problems with loss of some metadata when converting ORF files, but I don’t know what this data is, nor whether the problem still occurs. It doesn’t make any difference if you use Adobe products to handle you DNGs, because they don’t need that metadata. http://www.barrypearson.co.uk/articles/dng/safety.htm#comple teness
These are the potential benefits from using DNG. Not all people get all benefits, which is one reason things vary so much.
http://www.barrypearson.co.uk/articles/dng/benefits.htm

Some thoughts about workflow considerations here, including suggestions for ensuring you are resilient to a single point of failure.
http://www.barrypearson.co.uk/articles/dng/safety.htm#workfl ow
—
Barry Pearson
http://www.barrypearson.co.uk/photography/

well I was going to tell the OP that this NG user named Barry Pearson is big fan and recommends it frequently
HEHE

On Thu, 29 Mar 2007 04:51:12 -0500, "Colonel Blip" wrote:

Hello, All!

Looking for advice from experienced RAW photo-folks. I am now taking photos in Olympus RAW and was wondering if I should make my workflow process include a step to convert all of these to DNG and delete the ORF RAW files? What is the preferred process here?

Thanks,
Colonel Blip.
E-mail:

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I just purchased LightRoom and getting ready to spend my second evening using it. I have yet to convert anything to DNG and am watching this thread closely to judge the group reactions and to try to learn something.

I use a Canon XTi which I have also recently purchased. The CR2 format not being supported by my PS CS version makes me really want to learn about the DNG.

Hi,

Shooting in RAW with my Olympus E-500 camera, the reduction in size from the ORF file to the DNG file makes it worth converting. ORFs are about 14 megs while the converted DNGs are about 7 megs. That’s a 50% saving of space so I always convert to DNG (and delete the ORF) before bringing it into Lightroom and Photoshop.

Herb

On Thu, 29 Mar 2007 04:51:12 -0500, "Colonel Blip" wrote:

Hello, All!

Looking for advice from experienced RAW photo-folks. I am now taking photos in Olympus RAW and was wondering if I should make my workflow process include a step to convert all of these to DNG and delete the ORF RAW files? What is the preferred process here?

Thanks,
Colonel Blip.
E-mail:

—-== Posted via Newsfeeds.Com – Unlimited-Unrestricted-Secure Usenet News==—- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups —-= East and West-Coast Server Farms – Total Privacy via Encryption =—-

wrote:

On Thu, 29 Mar 2007 04:51:12 -0500, "Colonel Blip" wrote:

Hello, All!

Looking for advice from experienced RAW photo-folks. I am now taking photos in Olympus RAW and was wondering if I should make my workflow process include a step to convert all of these to DNG and delete the ORF RAW files? What is the preferred process here

I just purchased LightRoom and getting ready to spend my second evening using it. I have yet to convert anything to DNG and am watching this thread closely to judge the group reactions and to try to learn something.

I use a Canon XTi which I have also recently purchased. The CR2 format not being supported by my PS CS version makes me really want to learn about the DNG.

DNG does have some real advantages using Lightroom. After I am through editing the photo, I usually convert it to DNG, which with the Canon RAW files saves a bit over 20%, and also lets me know that I’ve done the work on a particular file.

Of course, if you’re sending it directly to PS, you might simply choose Edit in PS and it’ll then be linked to your LR library.

—
John McWilliams

Hello, !
You wrote on 29 Mar 2007 07:37:07 -0700:

Indeed. Thanks.

Thanks,

Colonel Blip.
E-mail:

n> On Mar 29, 10:51 am, "Colonel Blip"
n> wrote:
??>> Hello, All!
n> This varies so much from one person to another that all we can do is n> give you the facts, leaving you to make an informed decision. (For n> information, I use Pentax not Olympus, I’ve used DNG for nearly two n> and a half years, and except for the first 8 months I’ve converted to n> DNG from the memory card or portable storage device and deleted my n> PEFs).

n> There is LOTS of information about DNG here:
n> http://www.barrypearson.co.uk/articles/dng/

n> Some raw converters don’t (yet) support DNG – nothing from Olympus n> does:
n> http://www.barrypearson.co.uk/articles/dng/not_yet.htm

n> There have been problems with loss of some metadata when converting n> ORF files, but I don’t know what this data is, nor whether the problem n> still occurs. It doesn’t make any difference if you use Adobe products n> to handle you DNGs, because they don’t need that metadata. n> http://www.barrypearson.co.uk/articles/dng/safety.htm#comple teness

n> These are the potential benefits from using DNG. Not all people get n> all benefits, which is one reason things vary so much. n> http://www.barrypearson.co.uk/articles/dng/benefits.htm

n> Some thoughts about workflow considerations here, including n> suggestions for ensuring you are resilient to a single point of n> failure.
n> http://www.barrypearson.co.uk/articles/dng/safety.htm#workfl ow

—-== Posted via Newsfeeds.Com – Unlimited-Unrestricted-Secure Usenet News==—- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups —-= East and West-Coast Server Farms – Total Privacy via Encryption =—-

Hello, Herb!
You wrote on Thu, 29 Mar 2007 21:04:57 -0400:

No Lightroom here. After reading Barry’s site info I am now ‘contemplating the proverbial navel’.

Thanks,

Colonel Blip.
E-mail:

H> Hi,

H> Shooting in RAW with my Olympus E-500 camera, the reduction in size from H> the ORF file to the DNG file makes it worth converting. ORFs are about H> 14 megs while the converted DNGs are about 7 megs. That’s a 50% saving H> of space so I always convert to DNG (and delete the ORF) before bringing H> it into Lightroom and Photoshop.

H> Herb

H> On Thu, 29 Mar 2007 04:51:12 -0500, "Colonel Blip" H> wrote:

—-== Posted via Newsfeeds.Com – Unlimited-Unrestricted-Secure Usenet News==—- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups —-= East and West-Coast Server Farms – Total Privacy via Encryption =—-

On Thu, 29 Mar 2007 21:04:57 -0400, Herb wrote:

Hi,

Shooting in RAW with my Olympus E-500 camera, the reduction in size from the ORF file to the DNG file makes it worth converting. ORFs are about 14 megs while the converted DNGs are about 7 megs. That’s a 50% saving of space so I always convert to DNG (and delete the ORF) before bringing it into Lightroom and Photoshop.

Herb

<SNIP>

What data is it throwing away? That’s a HUGE reduction!

On Fri, 30 Mar 2007 15:38:11 -0500, "Colonel Blip" wrote:

Hello, Herb!
You wrote on Thu, 29 Mar 2007 21:04:57 -0400:

No Lightroom here. After reading Barry’s site info I am now ‘contemplating the proverbial navel’.

Thanks,

Colonel Blip.

<SNIP>

I like it so far. But I am still in my second evening of use.

Could you post a link to this site info you mentioned?

On Fri, 30 Mar 2007 09:20:04 -0700, John McWilliams
wrote:

wrote:

On Thu, 29 Mar 2007 04:51:12 -0500, "Colonel Blip" wrote:

Hello, All!

Looking for advice from experienced RAW photo-folks. I am now taking photos in Olympus RAW and was wondering if I should make my workflow process include a step to convert all of these to DNG and delete the ORF RAW files? What is the preferred process here

I just purchased LightRoom and getting ready to spend my second evening using it. I have yet to convert anything to DNG and am watching this thread closely to judge the group reactions and to try to learn something.

I use a Canon XTi which I have also recently purchased. The CR2 format not being supported by my PS CS version makes me really want to learn about the DNG.

DNG does have some real advantages using Lightroom. After I am through editing the photo, I usually convert it to DNG, which with the Canon RAW files saves a bit over 20%, and also lets me know that I’ve done the work on a particular file.

Of course, if you’re sending it directly to PS, you might simply choose Edit in PS and it’ll then be linked to your LR library.

I am still working out a lot of my work flow. Now just as I was getting comfortable with batch processing ih PS CS I add Lightroom to the mix. :/

Hello, !
You wrote on Fri, 30 Mar 2007 19:06:57 -0500:

There is LOTS of information about DNG here:
http://www.barrypearson.co.uk/articles/dng/
<<

Thanks,

Colonel Blip.
E-mail:

S> On Fri, 30 Mar 2007 15:38:11 -0500, "Colonel Blip" S> wrote:

S> <SNIP>

S> I like it so far. But I am still in my second evening of use.

S> Could you post a link to this site info you mentioned?

—-== Posted via Newsfeeds.Com – Unlimited-Unrestricted-Secure Usenet News==—- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups —-= East and West-Coast Server Farms – Total Privacy via Encryption =—-

wrote:

On Thu, 29 Mar 2007 21:04:57 -0400, Herb wrote:

Hi,

Shooting in RAW with my Olympus E-500 camera, the reduction in size from the ORF file to the DNG file makes it worth converting. ORFs are about 14 megs while the converted DNGs are about 7 megs. That’s a 50% saving of space so I always convert to DNG (and delete the ORF) before bringing it into Lightroom and Photoshop.

Herb

<SNIP>

What data is it throwing away? That’s a HUGE reduction!

Yes, could you please double check, Herb?

—
john mcwilliams

John,

I assume by double-check you mean that I should check that the size reduction is 50%. Well, I have been converting from ORF to DNG for quite a while now and the reduction has consistently been in the 50% range. On the other hand, if you’re asking me for a technical description of the reduction, I am simply not qualified to answer that. I simply don’t know how it does its conversion. Frankly, after a conversion, I am unable to see any difference between the original ORF and the converted DNG even when viewed at actual pixels.

I assume others will chip in with more technical information about this.

Herb

John McWilliams wrote:

wrote:

On Thu, 29 Mar 2007 21:04:57 -0400, Herb wrote:

Hi,

Shooting in RAW with my Olympus E-500 camera, the reduction in size from the ORF file to the DNG file makes it worth converting. ORFs are about 14 megs while the converted DNGs are about 7 megs. That’s a 50% saving of space so I always convert to DNG (and delete the ORF) before bringing it into Lightroom and Photoshop.

Herb

<SNIP>

What data is it throwing away? That’s a HUGE reduction!

Yes, could you please double check, Herb?

Herb wrote:

John,

I assume by double-check you mean that I should check that the size reduction is 50%. Well, I have been converting from ORF to DNG for quite a while now and the reduction has consistently been in the 50% range. On the other hand, if you’re asking me for a technical description of the reduction, I am simply not qualified to answer that. I simply don’t know how it does its conversion. Frankly, after a conversion, I am unable to see any difference between the original ORF and the converted DNG even when viewed at actual pixels.
I assume others will chip in with more technical information about this.

Is the ORF compressed at all? Just for hohos you might want to try ZIPping a few of them and see what kind of reduction you get.

Herb

John McWilliams wrote:

wrote:

On Thu, 29 Mar 2007 21:04:57 -0400, Herb wrote:

Hi,

Shooting in RAW with my Olympus E-500 camera, the reduction in size from the ORF file to the DNG file makes it worth converting. ORFs are about 14 megs while the converted DNGs are about 7 megs. That’s a 50% saving of space so I always convert to DNG (and delete the ORF) before bringing it into Lightroom and Photoshop.
Herb

<SNIP>

What data is it throwing away? That’s a HUGE reduction!

Yes, could you please double check, Herb?

—
—
–John
to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)