DPP issue

I have a question concerning Digital Photo Professional, the software that came with the 40D I bought last September.

I shoot sports in RAW mode, then use DPP to convert keepers to .jpg format. Then I finish manipulating images in iPhoto.

After conversion to .jpg format, the files average 10 Megabytes in size, much larger than I'm used to .jpgs being. However, if I make a minor change in iPhoto (such as straightening a photo by 0.2 degrees, the file size drops to 5 Megabytes or less.

What I would like to know is if I could change a setting in DPP so that the file sizes would be "normal" and I wouldn't have to straighten every photo in iPhoto.

Other than that, I'm sold on RAW over .jpg. I'm now shooting basketball games in manual mode, deliberately underexposing by 1-2 stops because I know I can compensate for that in DPP. I even seem to be getting better focus results.

You can change the quality setting when you convert or batch process the files. 80% should give you about a 5mb file size.

DPP is saving the converted files in a high quality jpeg setting (low compression).
iPhoto looks like it is saving in a lower quality setting (higher compression) this would account for the file size difference.

The choice is yours, higher quality or lower file size, although i doubt you can tell the difference unless you have some large prints done and repeatedly save the jpeg file.

I have read that the next release of DPP will include a fine rotation tool with 0.5 degree increments.

tzalman wrote in post #4686817
I have read that the next release of DPP will include a fine rotation tool with 0.5 degree increments.

Great news----been a long time coming!

In the file processing dialog (either single or batch) select “EXIF Jpeg” as the file format and a quality setting of just 7 or 8. This way the jpeg files will have a reasonable size.
If you plan to do some further processing beyond the capabilities of DPP, you should process the images as “EXIF Tiff” to avoid any quality loss at the intermediate stage, saving the final result in iPhoto as jpeg as usual. For plain photos though, DPP can already do just about everything you’ll normally need (including all sorts of tone curve manipulation), except levelling the horizon.