JPEG quality

When saving as jpeg from Camera Raw, the max quality setting available is 10. When saving a jpeg from PS, the max is 12.
Are 10 and 12 the same compression?

Better not to worry about it and save as a tiff.

Jpeg should only every be used to save a file for its final desination eg: web site or emil use.

As Donald has already stated, you are better off saving in a lossless format such as TIFF.

Please can we assume that I want to save the files as jpeg, not tiff? Thanks.

Why?

I can't see why it matters but anyway...
I work as an editorial photographer and regularly send 5-10 images via email to picture desks. Speed of delivery precludes sending tiffs.
I would like my clients to have the maximum possible quality of compressed jpegs. Saving a raw file in camera raw using the maximum quality setting of 10 produces a file of <3mb. Saving the same file as a tiff and then re-saving as a jpeg from PS at the max setting of 12 produces a file of >8mb.
Does this mean that the jpeg produced by camera raw at 10 is much more compressed than the jpeg produced by PS at 12?
In Adobe's world, are 10 and 12 the same thing?

wrote in message

I can't see why it matters but anyway...
I work as an editorial photographer and regularly send 5-10 images via email to picture desks. Speed of delivery precludes sending

tiffs.

I would like my clients to have the maximum possible quality of compressed jpegs. Saving a raw file in camera raw using the

maximum quality setting of 10 produces a file of <3mb. Saving the same file as a tiff and then re-saving as a jpeg from PS at the
max setting of 12 produces a file of >8mb.

Does this mean that the jpeg produced by camera raw at 10 is much more compressed than the jpeg produced by PS at 12?

No. By converting raw to tiff, you're tripling the file size and, incidentally, NOT increasing the image quality.

Do some side-by-side comparisons of images taken in raw
mode and highest-quality JPEG mode on your camera, and
I can almost guarantee you won't see any difference at all. You're much better off sending these to your picture desks than convoluted raw>tiff>recompressed JPEG images.

Good question. Since the two compression algorithms are probably produced by different parts of Adobe it may be hard to get an answer.

Maybe one of their engineers will pop in.

If the 3MB files are fit for their purpose why worry?

David. It is perfectly valid to use Jpeg for this purpose - to its "final destination" - as I eluded to in post #2. Where Jpeg falls down is when it is opened, resaved and opened again. Each successive save causes a cumulative loss in quality.

To answer your first question, you can save at quality setting 12 from ACR. You just have to enter the 12 into the "Quality" box manually.

An even better way to work would be to crop and tweak each image in Camera Raw first, pressing the "Done" button instead of "Save". Once the edits are coplete, you can create and resize your Jpegs from Bridge using "Image Processor".

The beauty of this method is that it allows you to automatically add your copyright information. Plus, you can get IP to run an action on the images (to sharpen perhaps?) as it creates them.

Hope this helps.

Chris.

Chris, you're right! - entering 12 saves the jpeg at >8mb. How strange that Adobe would set the max default as less than true maximum quality. Anyway, thanks for the advice.
David