Save as a 16 bit TIFF file for Enlarging?

Question, a local photo developer told me that if I wanted to develop my photos at something like 16 x 20 or larger I should save my photos as a 16 bit TIFF file. Elements 4.0 does not seem to allow me to set the bits at 16, just 8. Is there any truth to what they are saying?
Also isn't the file size going to be massive when doing this. Most likely prohibiting an upload to their site?
I am shooting with a Nikon D50 in RAW format. Obvioulsy I have to open it in Elements from Camera Raw as an 8 bit photo to save it in either TIFF or JPEG format.
Any comments are appreciated.

Thank you for your comment.
When I save the 16 bit file in ACR it saves it as a .dng file. When I open the .dng file in Elements again the raw editor opens it as a 8 bit file automatically. This may be all well and good if I can have enlargements made with this file type but not good if what the developer is telling me is true. ???????

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I scan slides and films and get 16bits Tiff files. For post scan processing I would like to use PE but on the one I have (PE6 for Mac) most of the time before I start using a tool PE is asking me to convert the file into 8bits 'cause Element doesn't manage everything with 16bits files. Do you know if this is likely to change or if I need to buy Photoshop for my needs (as lomg as Photoshop works with 16bits which I assume it does).
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Thanks for your answer.
Pierre
Envoyé de mon iPhone
Le 24 juil. 2009 à 16:18, Barbara Brundage <[email protected]> a
écrit :
Adobe seems to want to keep this as one of the distinctions between
PSE and PS. If you want to work with layers in 16 bits, you need to
move to PS. All you have in PSE are the more basic functions.
>

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Save as a 16 bit TIFF file for Enlarging?

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