How to rotate image w/o loss of picture quality and info

[Liang]

Hi,

How to rotate the image to vertical and maintain the picture quality and infomation?

Please help.

[Roger_Cavanagh]

BreezeBrowser www.breezesys.com can do this.

Regards,

[robertwgross]

You are shooting RAW, aren't you?

---Bob Gross---

[bfaust]

in jpg you can use a freeware program called Irfanview. This will rotate and save it as a jpg without recompressing it.
It is a small fast viewer.

www.irfanview.com

[Liang]

I am shooting JPEG most of the time.
But wish to try RAW sometimes.

Thank you for the advice, I will try BreezeBrowser and InfarView.

[ron chappel]

I didn't even know a jpeg COULD ever be compromised when rotating!!
Now that would be a bizare feature for any programer to build in to their picture editor-like deliberate vandelism!! :evil:

I too vote for irfanview-not just for doing this but for superfast general viewing of practically ANY format images,even canon raw
An awsome little program

[Belmondo]

Has anyone considered converting to lossless TIFF before rotating?

[Liang]

After convert to TIFF, all the shooting information is gone.

[robertwgross]

All of the EXIF information is still in the RAW file.

Shoot RAW. Convert to TIF. Save the RAW file. Refine the TIF if necessary. Save the TIF. Downsize and convert to JPEG only if it must be published to the web, or convert to JPEG if it must be sent over email.

---Bob Gross---

[maderito]

After convert to TIFF, all the shooting information is gone.
If you mean EXIF information, it is not lost. TIFF files can store EXIF info and it can be extracted if the application you're using supports that function. However, compressing a TIFF file (which does not degrade the image) may cause loss of the EXIF data. Some applications can't read compressed TIFFs because of patent issues (with the compression algorithm).

As far as I know, rotating a JPEG by 90, -90, or 180 does not degrade the image as long as the application does not save and re-open the image during rotation. In Photoshop, there is no degradation.

[rodbunn]

The total No-Loss way is:

turn your monitor on it's side :lol:

Sorry, had to say it.

Rod

[CoolToolGuy]

The total No-Loss way is:

turn your monitor on it's side :lol:

Sorry, had to say it.

Rod

Option 2:

Lay down. :shock:




Have Fun,

[Liang]

I tried IrfanView to rotate the image and save it.
I notice the file size is much smaller.
1.3mb after rotate become 380kb.
I think there should be a loss of picture quality.

[Liang]

The BreezeBrowser is working fine.
After rotating the file size remain the same.

[ejwebb]

So, is auto rotation in camera lossy? Should you turn the feature off and rotate only with an editing program to ensure quality? Thanks.

[Liang]

The auto rotation in camera does not actually rotate the picture. It only set the vertical flag to true, so that the camera will show the picture in vertical form.

When you transfer to PC, it still show a horizontal picture.