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DPChallenge Forums >> Tips, Tricks, and Q&A >> RAW vs JPG
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09/05/2005 03:31:37 AM · #1
I normally shoot in RAW format for obvious reasons and in JPG when I'm going to take a lot of photos that don't require the highest quality...but I'm danged if I can finger out why I'd want to set the capture to RAW+JPG...seems a lot of card space for little gain!
09/05/2005 03:34:59 AM · #2
RAW+JPG is for those that wants a quick way to transmit an image really quick (newpapers,email,etc) and still have the flexiblity of the RAW format to tweak later when you have more time.
09/05/2005 03:57:58 AM · #3
You can set the quality level of the jpg component quite low, too, so it takes up little space.It's a really good way to preview a lot of images and narrow down which ones you want to work seriously on. I do RAW plus jpg at the smallest size and then before doing anything with the RAW converter (which is time-consuming) I use irfanview to browse the jpg thumbs, which load up really fast.

The jpg files are also handy for trying special effects on; they are much smaller files so much faster to work on (much, much faster on my machine). When I have a RAW file that I am gonna do a lot of work on, I do a test drive on the jpg first and note the settings that work. Then I can open up the big file and get most of the work done very efficiently.

Robt.
09/05/2005 04:58:58 AM · #4
Also some of the digital wallets may not support certain types of RAW so having a jpeg also will allow viewing.
09/05/2005 09:23:45 AM · #5
What is a "digital wallet"? Are you talking about the cards themselves? or the editing software?
09/05/2005 11:22:00 AM · #6
Originally posted by AzCKelly:

What is a "digital wallet"? Are you talking about the cards themselves? or the editing software?


a digital wallet is a little portable electronic device that has a hard drive in it. you can put your memory card into the digital walet and copy the files over. comes in real handy when taking short trips and you dont want to cary your laptop with you. There are many different kinds, some are real basic like the Xs drive I have and some get real fancy and let you look at the pics.

//www.xs-drive.com/

this is the latest craze (i guess, unless something else came out)
Epson P2000

James

Message edited by author 2005-09-05 11:27:02.
09/05/2005 11:59:08 AM · #7
this is probably the biggest benefit for those not working in photojournalism. though my camera doesn't support RAW+JPEG.

Originally posted by bear_music:

You can set the quality level of the jpg component quite low, too, so it takes up little space.It's a really good way to preview a lot of images and narrow down which ones you want to work seriously on. I do RAW plus jpg at the smallest size and then before doing anything with the RAW converter (which is time-consuming) I use irfanview to browse the jpg thumbs, which load up really fast.

The jpg files are also handy for trying special effects on; they are much smaller files so much faster to work on (much, much faster on my machine). When I have a RAW file that I am gonna do a lot of work on, I do a test drive on the jpg first and note the settings that work. Then I can open up the big file and get most of the work done very efficiently.

Robt.

09/05/2005 12:02:50 PM · #8
Originally posted by bear_music:

I do RAW plus jpg at the smallest size and then before doing anything with the RAW converter (which is time-consuming) I use irfanview to browse the jpg thumbs, which load up really fast.


I do the same (minus the irfanview). For starters, I'm impatient when it comes to seeing my photos. And then there's no time wasting opening up the RAW files of photos that are poop.

I just remembered that someone posted an xp hack that will make RAW files viewable but I forgot to do that. I'll have to see if I can find that post.
09/05/2005 12:06:02 PM · #9
Originally posted by mk:

Originally posted by bear_music:

I do RAW plus jpg at the smallest size and then before doing anything with the RAW converter (which is time-consuming) I use irfanview to browse the jpg thumbs, which load up really fast.


I do the same (minus the irfanview). For starters, I'm impatient when it comes to seeing my photos. And then there's no time wasting opening up the RAW files of photos that are poop.

I just remembered that someone posted an xp hack that will make RAW files viewable but I forgot to do that. I'll have to see if I can find that post.


Windows XP RAW image viewer
09/05/2005 12:14:10 PM · #10
Irfanview plugins for viewing raw formats can be found here. Plugins
09/05/2005 12:17:51 PM · #11
Originally posted by awpollard:

Windows XP RAW image viewer


Awesome, thanks!
09/05/2005 12:19:28 PM · #12
I ran into the Why I would use RAW+JPG the other day. The black/white parameter of the 20D has two levels of in cam filters. You set the Normal stuff, like sepia and what not and then under that you can apply a red, violet, blue or yellow filter. Thinking to myself hey I can acheive the same results in camera as some of those Virtual Photographer b/w Filters.

I did the shoot however I was in RAW (only), I don't know what I was thinking as RAW throws all those in cam settings away...and all my pics were in color. So I guess if I wanted RAW but also in cam filters at the same time that I would have to shoot RAW+JPG.
09/05/2005 12:25:48 PM · #13
Originally posted by awpollard:

I ran into the Why I would use RAW+JPG the other day. The black/white parameter of the 20D has two levels of in cam filters. You set the Normal stuff, like sepia and what not and then under that you can apply a red, violet, blue or yellow filter. Thinking to myself hey I can acheive the same results in camera as some of those Virtual Photographer b/w Filters.

I did the shoot however I was in RAW (only), I don't know what I was thinking as RAW throws all those in cam settings away...and all my pics were in color. So I guess if I wanted RAW but also in cam filters at the same time that I would have to shoot RAW+JPG.


That's quite correect. I forgot that one. On the 20D and the Rebel XT at least (not all cams may do this) you can process the jpg component of the image duo to B/W parameters and use virtual filtration as you do it, for straight-out-of-the-camera B/w or Sepia images while keeping full color in the RAW. Of course, in this case you'd probably want to be using JPG "Fine" settings, and it would take a lot more card space.

R.
09/05/2005 12:46:25 PM · #14
Originally posted by bear_music:

That's quite correect. I forgot that one. On the 20D and the Rebel XT at least (not all cams may do this) you can process the jpg component of the image duo to B/W parameters and use virtual filtration as you do it, for straight-out-of-the-camera B/w or Sepia images while keeping full color in the RAW. Of course, in this case you'd probably want to be using JPG "Fine" settings, and it would take a lot more card space.

R.


Iíve used the RAW-JPG setting many times after I read an article in Pop photo //www.popphoto.com/article.asp?section_id=2&article_id=1465&page_number=1 Ten things you should know about the 20D the article shows you how to use the B/W and filters to create a close to infrared effect. I use it more for reference as an idea of what the image can look like.

Message edited by author 2005-09-05 12:52:44.
09/05/2005 02:01:12 PM · #15
I believe that there are more settings than just filter effects that are implemented into jpegs but not in the RAW file, such as white balance settings. That is why huge amounts of data can be extracted from the RAW file that are just not there in the jpg (I am a recent but complete convert to RAW files!!).

On a more prosaic note, if you process the RAW files, the untouched jpeg can be useful for validating your DPC entries.

I believe that if you have a better camera (the 1DsMk2), you can save jpg to an SD card and RAW to the CF card at the same time, giving you a backup against card failure.

Plus the extra file size is a great incentive to really think about your photos and get them right the first time, rather than waste card space with duds.
09/05/2005 04:34:18 PM · #16
Originally posted by legalbeagle:



On a more prosaic note, if you process the RAW files, the untouched jpeg can be useful for validating your DPC entries.



I do believe that the original RAW file can be used to validate your entry and that the JPEG file will have a different filename, which may cause confusion regarding validation. The original RAW file remains untouched after development.
09/05/2005 06:23:54 PM · #17
Originally posted by AJAger:

Originally posted by legalbeagle:



On a more prosaic note, if you process the RAW files, the untouched jpeg can be useful for validating your DPC entries.



I do believe that the original RAW file can be used to validate your entry and that the JPEG file will have a different filename, which may cause confusion regarding validation. The original RAW file remains untouched after development.


Agreed - except the jpg is a quarter of the size (for our dial up friends).
09/06/2005 01:36:47 AM · #18
Originally posted by AJAger:

Originally posted by legalbeagle:



On a more prosaic note, if you process the RAW files, the untouched jpeg can be useful for validating your DPC entries.



I do believe that the original RAW file can be used to validate your entry and that the JPEG file will have a different filename, which may cause confusion regarding validation. The original RAW file remains untouched after development.


Filename is irrelevant for validation, the entered image file will often (even usually, in my case) not include any portion of the original "img1234.CR2" filename.

R.
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