Re: Raw v. Tiff

In article <jolm34d94ouhir0lgkbb4u51178eaham76@xxxxxxx>,
Talker <Talker@xxxxxxxxxxx> wrote:

On Mon, 26 May 2008 11:42:02 +1000, dorayme
<doraymeRidThis@xxxxxxxxxxxxxxx> wrote:

Someone had a Nikon digital at a function I attended yesterday. Very
nice and all, I notice it had a "Raw" format as well as "Tiff". What is
the advantage of Raw over Tiff? (I know two disadvantages, not all
computers can read Raw but most can read Tiff. And Raw is even bigger in
file size to Tiff.)


Hey there dorayme! The easy way to explain the difference is
that TIFF is one way to process an image. The picture you take with
your camera is processed by taking the ISO setting you used, the white
balance you used, etc. and processing all of these settings into a
TIFF image.
The RAW picture means that all of the information that was
processed in the TIFF image is not processed in any way. The "raw"
data is stored as data on the memory card and then downloaded to your
computer. Having this raw data means that you can change these
settings in the computer. If you had the white balance set to
tungsten light, you can remove that setting and instead, set it to
sunlight, or whatever light you want. With the TIFF image, this
setting is locked in and can't be changed, since the TIFF processing
used the tungsten light setting when it processed the image and made
it into a TIFF image.
By having the raw data available with no processing done to it,
it's possible to change a number of the settings you used on the
camera after you've taken the picture. You can manipulate this raw
data in a number of different ways, so it's as if you are taking the
picture over, only now you can control the settings from your
computer.
It's kinda like taking the picture, viewing the results in RAW
and saying, "Wait, I didn't want to use this white balance so I'll
take it out and insert this white balance. Okay, now I want to
change this setting or that setting, so I'll take out what I used and
insert this other setting."

Talker

This is a very nice clear explanation! Thanks for it.

--
dorayme
.

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