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09/24/2006 06:25:36 PM · #1 |
| does rotating a picture in the "windows picture and fax viewer" reduces its quality as its not a really pro software ? |
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09/24/2006 06:48:27 PM · #2 |
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09/24/2006 07:06:20 PM · #3 |
| it shouldn't alter the photo at all. |
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09/24/2006 07:07:33 PM · #4 |
| Just don't save it over top of the original. Re-saving a jpeg will reduce quality. |
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09/24/2006 07:16:22 PM · #5 |
Originally posted by rami:
does rotating a picture in the "windows picture and fax viewer" reduces its quality as its not a really pro software ? |
Actually, it does. Windows viewer saves the file when it rotates it. (I think you are presented with a warning when you try to rptate it.) Not only will it reduce quality, if it is your original it will no longer pass as an original when submitted to DPC for verification.
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09/24/2006 07:16:49 PM · #6 |
it shouldn't, in 90 degree increments, but I have heard that only ACDSee manages to do it without having to recompress the jpeg. Can't verify that though.
As an aside, just in case, rotating and then saving does change the file so it would no longer be the original if needed for proof during validation. Most stand-alone viewers that rotate save over the original, so be careful.
David
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09/24/2006 07:26:38 PM · #7 |
I've got nothing solid to back this up, but I've always had the feeling that using Windows Picture & Fax to do it does indeed alter the quality. I always wait and do it in Photoshop. Annoying to look at them sideways when I sort through them, but I'd rather that than have the image degraded.
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09/24/2006 07:28:28 PM · #8 |
Originally posted by OdysseyF22:
I've got nothing solid to back this up, but I've always had the feeling that using Windows Picture & Fax to do it does indeed alter the quality. I always wait and do it in Photoshop. Annoying to look at them sideways when I sort through them, but I'd rather that than have the image degraded. |
It does as it resaves the file. Don't use that dinky application :-) |
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09/24/2006 07:38:36 PM · #9 |
Originally posted by robs:
Originally posted by OdysseyF22:
I've got nothing solid to back this up, but I've always had the feeling that using Windows Picture & Fax to do it does indeed alter the quality. I always wait and do it in Photoshop. Annoying to look at them sideways when I sort through them, but I'd rather that than have the image degraded. |
It does as it resaves the file. Don't use that dinky application :-) |
Going off topic a bit, but I've noticed that using it to print is a disaster, too. The prints always come out WAY too dark.
I'm pretty much thinking that except as a way to view shots quickly, without opening PS, etc, it's worthless.
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09/24/2006 07:47:09 PM · #10 |
Originally posted by OdysseyF22:
I'm pretty much thinking that except as a way to view shots quickly, without opening PS, etc, it's worthless. |
Not even that since it's not colour managed :-)
I use Irfanview for just browsing and much more. |
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09/24/2006 08:06:24 PM · #11 |
Originally posted by robs:
Originally posted by OdysseyF22:
I'm pretty much thinking that except as a way to view shots quickly, without opening PS, etc, it's worthless. |
Not even that since it's not colour managed :-)
I use Irfanview for just browsing and much more. |
Not color managed? Can you explain that a bit more. I'm using a Huey calibration unit and was under the impression that everything displayed on screen was corrected. Is that not true for the Picture & Fax viewer?
And since you mentioned Ifranview, I've got a few questions about that. Most generally, how do you like it? And more specifically, does it allow you to easilly add/edit IPTC data, such as photog's name, location, and caption information?
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09/24/2006 08:25:28 PM · #12 |
You might like to try Picassa its free photo viewing software made by Google. It will even display Raw files.
The great thing about it is that it never changes the original file... it keeps track of how you would like the image to be viewed somewhere different. In fact if you want to save the changes permanently you need to use the export function which creates a copy of the image and still leaves the original untouched.
Picassa is by no means a photoshop replacement - but it is a very quick and powerful viewer allowing things like rotation, cropping, shadow and highlight adjustment on the fly. The auto correct feature named "Im feel lucky" works quite well too...
Message edited by author 2006-10-03 07:28:17.
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09/24/2006 08:34:13 PM · #13 |
FWIW, in order to rotate a JPEG without loss of quality, a special procedure must be used. Not all software can do this "lossless rotation" and not all images can be losslessly rotated without slightly modifying their size first.
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