Chris is stating basically the same information that I've been giving at
my various clinics at the NASG conventions. I was told when I attended
an imging seminar once that a JEPG is created by the camera's onboard
computer. This itty bitty computer takes the raw data and compresses it
the best it can, whereas if you shoot in RAW you now have everything
that the camera can produce. Then your larger full blown computer does
the rest of the work with your 'abiliities' controling the computer.
Chris also mentions that he likes to be able to crop and recompose the
image because it will help his design. For the last 35 years they've
always told me to shoot 'loose' so they can do just that. So if you
have a 4 mp camera you'll have to shoot a little tighter (thus giving
the designer fewer choices) or reproduce the final image a bit smaller.
On the other hand some of the most recent camera offerings will provide
an excess of information that most pros really don't need. So don't be
fooled when someone says they shooting with a 90 mp camera and only
using it for magazine usage where a 10-16 mp will do just fine. The
problem comes up when you have to store all those very large images and
ever more powerful computers to push those pixels around. The
computer, software and camera folks have to sell new stuff to you and me.
Bob Werre
BobWphoto.com
Christopher Borgmeyer wrote:
>
>
>
> Finally a technical bugaboo. JPEGs are lossy. That means they loose
> data and introduce noise. Even at 100% quality. TIFFs and RAW files do
> not. If you have the option, shoot in TIFF or RAW. If you must shoot a
> JPEG make sure it is the highest quality setting you can shoot. And
> never save a file over and over again as a JPEG. Each time you run
> that JPEG compression algorithm on an image you introduce more and
> more noise. Trust me, with todays monitors all those jaggies will be
> spotted. We know where to look to spot the little rascals. If you're
> editing your shot in Photoshop, for example, save the shot as a PSD or
> some non-lossy format as you work. Maintain the quality of the data.
> JPEGs are the enemy.
>
> The moral of all this, composition and quality will always catch the
> art director's eye.
>
> Chris Borgmeyer
>
>
>
[Non-text portions of this message have been removed]
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