iPhoto RAW Images Compress after Editing!!

1. iPhoto does not compress your RAW images or touch them in any way. (Want to check? File -> Export: *Kind - Original*)

2. WHat's happening is that iPhoto is processing your RAWs and saving the output as a jpeg file. (You know, you can save it as a tiff, if you prefer)

3. As I'm sure you understand, no application can Save a RAW file. A RAW isn't even a File it's just a sensor dump from your camera. So to do anything with this data = print it, share it whatever - it has to be processed into a usable form. So when you edit the RAW the output is saved in a usable form - in this case a jpeg.

This is all explained in the Help.

Regards

TD

the size of the file is what matters to me, in the previous versions of iLife this never happened and after editing a 11.2mb file it stayed that way or increased due to certain changes.

Not unless you were saving the output as tiffs. And this will be the case regardless of whatever oyu use to process the RAWs

Regards

TD

You need to re-read TS's response

Your RAW files are not being reduced in size nor are the being modified in any way -- and never have been

You cannot and never have been able to edit a RAW file - your edited file is a different format because you can not save RAW

There is an iPhoto preference to save edited RAW files as TIFFs which are much bigger than JPEGs

Use what every program you want - but it would be good to read the response and understand it as a help in making your decision

LN

The problem here is that iPhoto is fibbing to you 😉

Here's test:

Edit one of these pics then go

File -> Export and set the Kind to Original - This will get you the CR2 file, full size

Now go

File -> Export and this time set the Kind to Current - what does that produce?

Regards

TD

Yes, it will show a smaller size. But if you drag that thumbnail to the desktop you'll find you have a jpg file which is the results of your editing the raw file in iPhoto. What iPhoto is reporting is the file size of the jpg that will created if you need to produce an file of that edited RAW file. Until you drag it to the desktop the edit (or rather edit instructions) are kept in iPhoto's database files and iPhoto uses that information to display the edited version in iPhoto.

i have the same prob, have a 300dpi photo after edit its 72 dpi, iexported in both tiff and png and same dpi as before ??

It's not the same problem. See my reply in your own thread.

Regards

TD

Sounds like a tiff.

I really don;t understand your question, you will need to give us some context.

Regards

TD

Read The Myth of DPI. It explains much of that.