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05/06/2005 04:14:52 PM · #1 |
Okay, my stupid question for the day, I'm entitled, LOL~
When I save my pictures from the media card to the computer I do it as a batch, opening the shot and then resaving it on my hard drive as a .tiff file. It's a .jpg on my media card. SHOULD I ever be in the position where I would have to offer up the original file for verification do I need the original .jpg file or will the .tiff file be okay.
I batch them this way so when I go to work on them it saves me the step of converting them to a .tiff to work on. And I was told by someone who works with the files quite a bit that this in no way compromises the original .exif data. I just want to be sure because otherwise I'll just transfer them as a .jpg and then convert the ones I want. Not a huge deal, just a bit of a hassle of an extra step.
Thanks
Deannda |
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05/06/2005 04:17:53 PM · #2 |
It doesn't make major changes to the EXIF, but it does make changes. Once an image is opened and resaved, any number of editing steps could possibly have been performed between the "open" and "save", so yes, the original JPEG would be needed.
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05/06/2005 04:20:52 PM · #3 |
CAn I chime in too......?
I'm mostly doing RAW to .tiff conversions
if I got a DQ would DPC require the RAW file?
Steve
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05/06/2005 04:25:05 PM · #4 |
Originally posted by Tallbloke:
CAn I chime in too......?
I'm mostly doing RAW to .tiff conversions
if I got a DQ would DPC require the RAW file?
Steve |
Actually, I'd say at least half the proof files we get these days are RAW. Yes, the RAW is your original.
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05/06/2005 04:45:10 PM · #5 |
Originally posted by kirbic:
It doesn't make major changes to the EXIF, but it does make changes. Once an image is opened and resaved, any number of editing steps could possibly have been performed between the "open" and "save", so yes, the original JPEG would be needed. |
Okay, thanks, that is what I thought. Darn it!
Deannda
Just have to remember to convert to .tiff before editing now. ;) |
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05/06/2005 04:52:33 PM · #6 |
| Why exactly would you need to convert them to tiff before editing? |
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05/06/2005 04:54:30 PM · #7 |
Originally posted by TechnoShroom:
Why exactly would you need to convert them to tiff before editing? |
It is lossless when performing periodic saves. Repeatedly saving a JPEG as you edit it is not a good idea. Saving in your editing program's proprietary format (e.g. Photoshop) is usually best. |
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05/06/2005 04:55:51 PM · #8 |
Saving as tiff immediately before you start editing will help you avoid saving over the original.
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05/06/2005 04:56:09 PM · #9 |
Originally posted by TechnoShroom:
Why exactly would you need to convert them to tiff before editing? |
If she usually works in multiple sessions, closing and reopening in between, then the lossless TIFF format will incur no image degradation due to recompression, whereas the JPG will.
You don't need to worry about this if you only open/edit/save/close once or twice, but if you do it multiple times, there is a difference, though it is usually subtle if the JPEG quality is set quite high.
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05/06/2005 05:06:36 PM · #10 |
Originally posted by kirbic:
...You don't need to worry about this if you only open/edit/save/close once... |
Which is why I asked. For everthing else and assuming photoshop, it (IMO) should be saved as psd.
I've never really bought into the avoid saving over the original argument. In at least 8 years I've never saved over an original. |
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05/06/2005 05:11:21 PM · #11 |
Originally posted by TechnoShroom:
Originally posted by kirbic:
...You don't need to worry about this if you only open/edit/save/close once... |
Which is why I asked. For everthing else and assuming photoshop, it (IMO) should be saved as psd.
I've never really bought into the avoid saving over the original argument. In at least 8 years I've never saved over an original. |
Good for you. It's just a precaution.
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