Question about Digital Photo Professional

I had a couple of questions about the software that came with my T2i.
I've been taking photos in RAW format.
I seem to remember reading on this forum that the changes you make to your photos in the DPP aren't saved on the photo. Is this correct?
I did some work on a couple of photos this evening and used the sharpening tool in DPP and then saved them as a JPEG. Well, when I opened them they weren't as sharp anymore. I know there is some IQ destruction when saving to JPEG, but they looked like I hadn't worked with them at all. Should I have saved them in TIFF? Would this have resulted in less IQ destruction (i.e. sharper images)?
Also, we go online to print photos (Walgreens), can they utilize TIFF or does it have to be JPEG?

So basically to sum it up:
-Are changes applied in DPP kept when you save a photo?
-Are my problems from saving in JPEG vs. TIFF?
-Can places like Walgreens use TIFF files?
Any help is appreciated.
Thanks,
Randall

Did you open the JPGs backup in DPP? Are you viewing them at 100% zoom?

Sorry,
I did some more reading and found where others have asked the same question.
Yes I did open it and now the TIFF looks worse than the JPEG.
Randall

When you finish editing the photo, you can save the work by click on the top left corner main bar; otherwise DDP will ask you to save your work as you close the DDP.
After finish RAW editing; also click on the top left main bar, choice 'Convert and Save' into JPG or TIFF.
There are few more option regarding the quality of the JPEG or TIFF; I'm usual using the max
Good luck

O.K. I've read some more and am going to try a few more things, but is there a tutorial on resizing photos in DPP or do I have to open the photo in a Windows picture viewer to resize?
Thanks,
Randall

Can you post some samples - maybe view the raw, sharpen, view at 100%, and screen shot it. And a 100% crop of the jpeg generated.

You can resize in DPP when you convert - some of the options are to select the horizontal / vertical pixels.

When you say you saved the images and then opened them, what software did you use to open them? You should realize that "Save" in DPP doesn't work like it does in regular editors -- the changes are only saved to the file metadata. What you need to do is use File/Convert and Save or Batch process to create a new file with the edits applied.

And, as to resizing, you'll note that function is built into both of these output functions -- you can specify dimensions in pixels or in inches/ppi and you can specify a jpeg quality if you don't save as a tiff.

Hope that sheds some light.

As far as opening a jpeg in DPP, if it doesn't appear sharp make sure you are viewing both images at 100% for an accurate comparison. Image viewers will act in funny ways when viewing at compressed sizes and DPP is no different.

tonylong wrote in post #11746586
When you say you saved the images and then opened them, what software did you use to open them?

Yes, the 'Windows Picture and Fax Viewer' would be the worse

x_tan wrote in post #11747146
Yes, the 'Windows Picture and Fax Viewer' would be the worse

So, you have to Convert and Save to view the changes.

And, there is another part of the problem -- different viewers will give different versions of quality. Of course, that's what other people use to view photos, but there is nothing you can do about that. Just bear in mind that most people do not "see" things the way we photogs do.